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• wifi not recognized

  - by pumper

  I had wifi and worked then some day ubuntu asked me to update some packeages and restarted the system and after that no wifi. this is my wireless_script output : ########## wireless info START ########## ##### release ##### Distributor ID: Ubuntu Description: Ubuntu 14.04 LTS Release: 14.04 Codename: trusty ##### kernel ##### Linux S510p 3.13.0-24-generic #47-Ubuntu SMP Fri May 2 23:30:00 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux ##### lspci ##### 02:00.0 Network controller [0280]: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter [168c:0036] (rev 01) Subsystem: Lenovo Device [17aa:3026] Kernel driver in use: ath9k 03:00.0 Ethernet controller [0200]: Qualcomm Atheros AR8162 Fast Ethernet [1969:1090] (rev 10) Subsystem: Lenovo Device [17aa:3807] Kernel driver in use: alx ##### lsusb ##### Bus 001 Device 006: ID 0eef:a111 D-WAV Scientific Co., Ltd Bus 001 Device 007: ID 0cf3:3004 Atheros Communications, Inc. Bus 001 Device 004: ID 174f:1488 Syntek Bus 001 Device 003: ID 03f0:5607 Hewlett-Packard Bus 001 Device 002: ID 8087:8000 Intel Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 002 Device 002: ID 15d9:0a4c Trust International B.V. USB+PS/2 Optical Mouse Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub ##### PCMCIA Card Info ##### ##### rfkill ##### 0: ideapad_wlan: Wireless LAN Soft blocked: no Hard blocked: no 1: ideapad_bluetooth: Bluetooth Soft blocked: no Hard blocked: no 2: phy0: Wireless LAN Soft blocked: no Hard blocked: no 3: hci0: Bluetooth Soft blocked: no Hard blocked: no ##### iw reg get ##### country 00: (2402 - 2472 @ 40), (3, 20) (2457 - 2482 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS (2474 - 2494 @ 20), (3, 20), NO-OFDM, PASSIVE-SCAN, NO-IBSS (5170 - 5250 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS (5735 - 5835 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS ##### interfaces ##### # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback auto dsl-provider iface dsl-provider inet ppp pre-up /sbin/ifconfig wlan0 up # line maintained by pppoeconf provider dsl-provider auto wlan0 iface wlan0 inet manual ##### iwconfig ##### wlan0 IEEE 802.11bgn ESSID:off/any Mode:Managed Access Point: Not-Associated Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:off ##### route ##### Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface ##### resolv.conf ##### ##### nm-tool ##### NetworkManager Tool State: connected (global) - Device: eth0 ----------------------------------------------------------------- Type: Wired Driver: alx State: unavailable Default: no HW Address: <MAC address removed> Capabilities: Carrier Detect: yes Wired Properties Carrier: off - Device: wlan0 ---------------------------------------------------------------- Type: 802.11 WiFi Driver: ath9k State: unmanaged Default: no HW Address: <MAC address removed> Capabilities: Wireless Properties WEP Encryption: yes WPA Encryption: yes WPA2 Encryption: yes Wireless Access Points ##### NetworkManager.state ##### [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true WimaxEnabled=true ##### NetworkManager.conf ##### [main] plugins=ifupdown,keyfile,ofono dns=dnsmasq no-auto-default=<MAC address removed>, [ifupdown] managed=false ##### iwlist ##### wlan0 Scan completed : Cell 01 - Address: <MAC address removed> Channel:1 Frequency:2.412 GHz (Channel 1) Quality=55/70 Signal level=-55 dBm Encryption key:on ESSID:"mohsen" Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s 9 Mb/s; 12 Mb/s; 18 Mb/s Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s Mode:Master Extra:tsf=000000076c342498 Extra: Last beacon: 12ms ago IE: Unknown: 00066D6F6873656E IE: Unknown: 010882848B960C121824 IE: Unknown: 030101 IE: Unknown: 2A0104 IE: Unknown: 32043048606C ##### iwlist channel ##### wlan0 13 channels in total; available frequencies : Channel 01 : 2.412 GHz Channel 02 : 2.417 GHz Channel 03 : 2.422 GHz Channel 04 : 2.427 GHz Channel 05 : 2.432 GHz Channel 06 : 2.437 GHz Channel 07 : 2.442 GHz Channel 08 : 2.447 GHz Channel 09 : 2.452 GHz Channel 10 : 2.457 GHz Channel 11 : 2.462 GHz Channel 12 : 2.467 GHz Channel 13 : 2.472 GHz ##### lsmod ##### ath3k 13318 0 bluetooth 395423 23 bnep,ath3k,btusb,rfcomm ath9k 164164 0 ath9k_common 13551 1 ath9k ath9k_hw 453856 2 ath9k_common,ath9k ath 28698 3 ath9k_common,ath9k,ath9k_hw mac80211 626489 1 ath9k cfg80211 484040 3 ath,ath9k,mac80211 ##### modinfo ##### filename: /lib/modules/3.13.0-24-generic/kernel/drivers/bluetooth/ath3k.ko firmware: ath3k-1.fw license: GPL version: 1.0 description: Atheros AR30xx firmware driver author: Atheros Communications srcversion: 98A5245588C09E5E41690D0 alias: usb:v0489pE036d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v0489pE03Cd*dc*dsc*dp*ic*isc*ip*in* alias: usb:v0489pE02Cd*dc*dsc*dp*ic*isc*ip*in* alias: usb:v0CF3pE003d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v0CF3p3121d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v13D3p3402d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v04C5p1330d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v0489pE04Dd*dc*dsc*dp*ic*isc*ip*in* alias: usb:v0489pE056d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v0489pE04Ed*dc*dsc*dp*ic*isc*ip*in* alias: usb:v13D3p3393d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v0489pE057d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v0930p0220d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v0930p0219d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v0CF3pE005d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v0CF3pE004d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v13D3p3362d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v04CAp3008d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v04CAp3006d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v04CAp3005d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v04CAp3004d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v13D3p3375d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v0CF3p817Ad*dc*dsc*dp*ic*isc*ip*in* alias: usb:v0CF3p311Dd*dc*dsc*dp*ic*isc*ip*in* alias: usb:v0CF3p3008d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v0CF3p3004d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v0CF3p0036d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v03F0p311Dd*dc*dsc*dp*ic*isc*ip*in* alias: usb:v0489pE027d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v0489pE03Dd*dc*dsc*dp*ic*isc*ip*in* alias: usb:v0930p0215d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v13D3p3304d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v0CF3pE019d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v0CF3p3002d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v0CF3p3000d*dc*dsc*dp*ic*isc*ip*in* depends: bluetooth intree: Y vermagic: 3.13.0-24-generic SMP mod_unload modversions signer: Magrathea: Glacier signing key sig_key: <MAC address removed>:D9:06:21:70:6E:8D:06:60:4D:73:0B:35:9F:C0 sig_hashalgo: sha512 filename: /lib/modules/3.13.0-24-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k.ko license: Dual BSD/GPL description: Support for Atheros 802.11n wireless LAN cards. author: Atheros Communications srcversion: BAF225EEB618908380B28DA alias: platform:qca955x_wmac alias: platform:ar934x_wmac alias: platform:ar933x_wmac alias: platform:ath9k alias: pci:v0000168Cd00000036sv*sd*bc*sc*i* alias: pci:v0000168Cd00000036sv0000185Fsd00003027bc*sc*i* alias: pci:v0000168Cd00000036sv00001B9Asd00002810bc*sc*i* alias: pci:v0000168Cd00000036sv0000144Fsd00007202bc*sc*i* alias: pci:v0000168Cd00000036sv00001A3Bsd00002130bc*sc*i* alias: pci:v0000168Cd00000036sv000011ADsd00000612bc*sc*i* alias: pci:v0000168Cd00000036sv000011ADsd00000652bc*sc*i* alias: pci:v0000168Cd00000036sv000011ADsd00000642bc*sc*i* alias: pci:v0000168Cd00000036sv0000168Csd0000302Cbc*sc*i* alias: pci:v0000168Cd00000036sv0000168Csd00003027bc*sc*i* alias: pci:v0000168Cd00000036sv0000144Dsd0000411Ebc*sc*i* alias: pci:v0000168Cd00000036sv0000144Dsd0000411Dbc*sc*i* alias: pci:v0000168Cd00000036sv0000144Dsd0000411Cbc*sc*i* alias: pci:v0000168Cd00000036sv0000144Dsd0000411Bbc*sc*i* alias: pci:v0000168Cd00000036sv0000144Dsd0000411Abc*sc*i* alias: pci:v0000168Cd00000036sv00001028sd0000020Ebc*sc*i* alias: pci:v0000168Cd00000036sv0000103Csd0000217Fbc*sc*i* alias: pci:v0000168Cd00000036sv0000103Csd000018E3bc*sc*i* alias: pci:v0000168Cd00000036sv000017AAsd00003026bc*sc*i* alias: pci:v0000168Cd00000036sv00001A3Bsd0000213Abc*sc*i* alias: pci:v0000168Cd00000036sv000011ADsd00000662bc*sc*i* alias: pci:v0000168Cd00000036sv000011ADsd00000672bc*sc*i* alias: pci:v0000168Cd00000036sv000011ADsd00000622bc*sc*i* alias: pci:v0000168Cd00000036sv0000185Fsd00003028bc*sc*i* alias: pci:v0000168Cd00000036sv0000105Bsd0000E069bc*sc*i* alias: pci:v0000168Cd00000036sv0000168Csd0000302Bbc*sc*i* alias: pci:v0000168Cd00000036sv0000168Csd00003026bc*sc*i* alias: pci:v0000168Cd00000036sv0000168Csd00003025bc*sc*i* alias: pci:v0000168Cd00000036sv00001B9Asd00002812bc*sc*i* alias: pci:v0000168Cd00000036sv00001B9Asd00002811bc*sc*i* alias: pci:v0000168Cd00000036sv000011ADsd00006671bc*sc*i* alias: pci:v0000168Cd00000036sv000011ADsd00000632bc*sc*i* alias: pci:v0000168Cd00000036sv0000185Fsd0000A119bc*sc*i* alias: pci:v0000168Cd00000036sv0000105Bsd0000E068bc*sc*i* alias: pci:v0000168Cd00000036sv00001A3Bsd00002176bc*sc*i* alias: pci:v0000168Cd00000036sv0000168Csd00003028bc*sc*i* alias: pci:v0000168Cd00000037sv*sd*bc*sc*i* alias: pci:v0000168Cd00000034sv*sd*bc*sc*i* alias: pci:v0000168Cd00000034sv000010CFsd00001783bc*sc*i* alias: pci:v0000168Cd00000034sv000014CDsd00000064bc*sc*i* alias: pci:v0000168Cd00000034sv000014CDsd00000063bc*sc*i* alias: pci:v0000168Cd00000034sv0000103Csd00001864bc*sc*i* alias: pci:v0000168Cd00000034sv000011ADsd00006641bc*sc*i* alias: pci:v0000168Cd00000034sv000011ADsd00006631bc*sc*i* alias: pci:v0000168Cd00000034sv00001043sd0000850Ebc*sc*i* alias: pci:v0000168Cd00000034sv00001A3Bsd00002110bc*sc*i* alias: pci:v0000168Cd00000034sv00001969sd00000091bc*sc*i* alias: pci:v0000168Cd00000034sv000017AAsd00003214bc*sc*i* alias: pci:v0000168Cd00000034sv0000168Csd00003117bc*sc*i* alias: pci:v0000168Cd00000034sv000011ADsd00006661bc*sc*i* alias: pci:v0000168Cd00000034sv00001A3Bsd00002116bc*sc*i* alias: pci:v0000168Cd00000033sv*sd*bc*sc*i* alias: pci:v0000168Cd00000032sv*sd*bc*sc*i* alias: pci:v0000168Cd00000032sv00001043sd0000850Dbc*sc*i* alias: pci:v0000168Cd00000032sv00001B9Asd00001C01bc*sc*i* alias: pci:v0000168Cd00000032sv00001B9Asd00001C00bc*sc*i* alias: pci:v0000168Cd00000032sv00001A3Bsd00001F95bc*sc*i* alias: pci:v0000168Cd00000032sv00001A3Bsd00001195bc*sc*i* alias: pci:v0000168Cd00000032sv00001A3Bsd00001F86bc*sc*i* alias: pci:v0000168Cd00000032sv00001A3Bsd00001186bc*sc*i* alias: pci:v0000168Cd00000032sv00001B9Asd00002001bc*sc*i* alias: pci:v0000168Cd00000032sv00001B9Asd00002000bc*sc*i* alias: pci:v0000168Cd00000032sv0000144Fsd00007197bc*sc*i* alias: pci:v0000168Cd00000032sv0000105Bsd0000E04Fbc*sc*i* alias: pci:v0000168Cd00000032sv0000105Bsd0000E04Ebc*sc*i* alias: pci:v0000168Cd00000032sv000011ADsd00006628bc*sc*i* alias: pci:v0000168Cd00000032sv000011ADsd00006627bc*sc*i* alias: pci:v0000168Cd00000032sv00001C56sd00004001bc*sc*i* alias: pci:v0000168Cd00000032sv00001A3Bsd00002100bc*sc*i* alias: pci:v0000168Cd00000032sv00001A3Bsd00002C97bc*sc*i* alias: pci:v0000168Cd00000032sv000017AAsd00003219bc*sc*i* alias: pci:v0000168Cd00000032sv000017AAsd00003218bc*sc*i* alias: pci:v0000168Cd00000032sv0000144Dsd0000C708bc*sc*i* alias: pci:v0000168Cd00000032sv0000144Dsd0000C680bc*sc*i* alias: pci:v0000168Cd00000032sv0000144Dsd0000C706bc*sc*i* alias: pci:v0000168Cd00000032sv0000144Dsd0000410Fbc*sc*i* alias: pci:v0000168Cd00000032sv0000144Dsd0000410Ebc*sc*i* alias: pci:v0000168Cd00000032sv0000144Dsd0000410Dbc*sc*i* alias: pci:v0000168Cd00000032sv0000144Dsd00004106bc*sc*i* alias: pci:v0000168Cd00000032sv0000144Dsd00004105bc*sc*i* alias: pci:v0000168Cd00000032sv0000185Fsd00003027bc*sc*i* alias: pci:v0000168Cd00000032sv0000185Fsd00003119bc*sc*i* alias: pci:v0000168Cd00000032sv0000168Csd00003122bc*sc*i* alias: pci:v0000168Cd00000032sv0000168Csd00003119bc*sc*i* alias: pci:v0000168Cd00000032sv0000105Bsd0000E075bc*sc*i* alias: pci:v0000168Cd00000032sv00001A3Bsd00002152bc*sc*i* alias: pci:v0000168Cd00000032sv00001A3Bsd0000126Abc*sc*i* alias: pci:v0000168Cd00000032sv00001A3Bsd00002126bc*sc*i* alias: pci:v0000168Cd00000032sv00001A3Bsd00001237bc*sc*i* alias: pci:v0000168Cd00000032sv00001A3Bsd00002086bc*sc*i* alias: pci:v0000168Cd00000030sv*sd*bc*sc*i* alias: pci:v0000168Cd0000002Esv*sd*bc*sc*i* alias: pci:v0000168Cd0000002Dsv*sd*bc*sc*i* alias: pci:v0000168Cd0000002Csv*sd*bc*sc*i* alias: pci:v0000168Cd0000002Bsv*sd*bc*sc*i* alias: pci:v0000168Cd0000002Bsv00001A3Bsd00002C37bc*sc*i* alias: pci:v0000168Cd0000002Asv000010CFsd00001536bc*sc*i* alias: pci:v0000168Cd0000002Asv000010CFsd0000147Dbc*sc*i* alias: pci:v0000168Cd0000002Asv000010CFsd0000147Cbc*sc*i* alias: pci:v0000168Cd0000002Asv0000185Fsd0000309Dbc*sc*i* alias: pci:v0000168Cd0000002Asv00001A32sd00000306bc*sc*i* alias: pci:v0000168Cd0000002Asv000011ADsd00006642bc*sc*i* alias: pci:v0000168Cd0000002Asv000011ADsd00006632bc*sc*i* alias: pci:v0000168Cd0000002Asv0000105Bsd0000E01Fbc*sc*i* alias: pci:v0000168Cd0000002Asv00001A3Bsd00001C71bc*sc*i* alias: pci:v0000168Cd0000002Asv*sd*bc*sc*i* alias: pci:v0000168Cd00000029sv*sd*bc*sc*i* alias: pci:v0000168Cd00000027sv*sd*bc*sc*i* alias: pci:v0000168Cd00000024sv*sd*bc*sc*i* alias: pci:v0000168Cd00000023sv*sd*bc*sc*i* depends: ath9k_hw,mac80211,ath9k_common,cfg80211,ath intree: Y vermagic: 3.13.0-24-generic SMP mod_unload modversions signer: Magrathea: Glacier signing key sig_key: <MAC address removed>:D9:06:21:70:6E:8D:06:60:4D:73:0B:35:9F:C0 sig_hashalgo: sha512 parm: debug:Debugging mask (uint) parm: nohwcrypt:Disable hardware encryption (int) parm: blink:Enable LED blink on activity (int) parm: btcoex_enable:Enable wifi-BT coexistence (int) parm: bt_ant_diversity:Enable WLAN/BT RX antenna diversity (int) parm: ps_enable:Enable WLAN PowerSave (int) filename: /lib/modules/3.13.0-24-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k_common.ko license: Dual BSD/GPL description: Shared library for Atheros wireless 802.11n LAN cards. author: Atheros Communications srcversion: 696B00A6C59713EC0966997 depends: ath,ath9k_hw intree: Y vermagic: 3.13.0-24-generic SMP mod_unload modversions signer: Magrathea: Glacier signing key sig_key: <MAC address removed>:D9:06:21:70:6E:8D:06:60:4D:73:0B:35:9F:C0 sig_hashalgo: sha512 filename: /lib/modules/3.13.0-24-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k_hw.ko license: Dual BSD/GPL description: Support for Atheros 802.11n wireless LAN cards. author: Atheros Communications srcversion: 4809F3842A0542CD6B556D3 depends: ath intree: Y vermagic: 3.13.0-24-generic SMP mod_unload modversions signer: Magrathea: Glacier signing key sig_key: <MAC address removed>:D9:06:21:70:6E:8D:06:60:4D:73:0B:35:9F:C0 sig_hashalgo: sha512 filename: /lib/modules/3.13.0-24-generic/kernel/drivers/net/wireless/ath/ath.ko license: Dual BSD/GPL description: Shared library for Atheros wireless LAN cards. author: Atheros Communications srcversion: 88A67C5359B02C5A710AFCF depends: cfg80211 intree: Y vermagic: 3.13.0-24-generic SMP mod_unload modversions signer: Magrathea: Glacier signing key sig_key: <MAC address removed>:D9:06:21:70:6E:8D:06:60:4D:73:0B:35:9F:C0 sig_hashalgo: sha512 ##### modules ##### lp rtc ##### blacklist ##### [/etc/modprobe.d/blacklist-ath_pci.conf] blacklist ath_pci [/etc/modprobe.d/blacklist.conf] blacklist evbug blacklist usbmouse blacklist usbkbd blacklist eepro100 blacklist de4x5 blacklist eth1394 blacklist snd_intel8x0m blacklist snd_aw2 blacklist i2c_i801 blacklist prism54 blacklist bcm43xx blacklist garmin_gps blacklist asus_acpi blacklist snd_pcsp blacklist pcspkr blacklist amd76x_edac [/etc/modprobe.d/fbdev-blacklist.conf] blacklist arkfb blacklist aty128fb blacklist atyfb blacklist radeonfb blacklist cirrusfb blacklist cyber2000fb blacklist gx1fb blacklist gxfb blacklist kyrofb blacklist matroxfb_base blacklist mb862xxfb blacklist neofb blacklist nvidiafb blacklist pm2fb blacklist pm3fb blacklist s3fb blacklist savagefb blacklist sisfb blacklist tdfxfb blacklist tridentfb blacklist viafb blacklist vt8623fb ##### udev rules ##### # PCI device 0x1969:0x1090 (alx) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC address removed>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0" # PCI device 0x168c:0x0036 (ath9k) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC address removed>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0" ##### dmesg ##### [ 1.707662] psmouse serio1: elantech: assuming hardware version 3 (with firmware version 0x450f03) [ 11.918852] ath: phy0: WB335 1-ANT card detected [ 11.918856] ath: phy0: Set BT/WLAN RX diversity capability [ 11.926438] ath: phy0: Enable LNA combining [ 11.928469] ath: phy0: ASPM enabled: 0x42 [ 11.928473] ath: EEPROM regdomain: 0x65 [ 11.928475] ath: EEPROM indicates we should expect a direct regpair map [ 11.928478] ath: Country alpha2 being used: 00 [ 11.928479] ath: Regpair used: 0x65 [ 14.066021] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready ########## wireless info END ############

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• SQL SERVER – Log File Growing for Model Database – model Database Log File Grew Too Big

  - by pinaldave

  After reading my earlier article SQL SERVER – master Database Log File Grew Too Big, I received an email recently from another reader asking why does the log file of model database grow every day when he is not carrying out any operation in the model database. As per the email, he is absolutely sure that he is doing nothing on his model database; he had used policy management to catch any T-SQL operation in the model database and there were none. This was indeed surprising to me. I sent a request to access to his server, which he happily agreed for and within a min, we figured out the issue. He was taking the backup of the model database every day taking the database backup every night. When I explained the same to him, he did not believe it; so I quickly wrote down the following script. The results before and after the usage of the script were very clear. What is a model database? The model database is used as the template for all databases created on an instance of SQL Server. Any object you create in the model database will be automatically created in subsequent user database created on the server. NOTE: Do not run this in production environment. During the demo, the model database was in full recovery mode and only full backup operation was performed (no log backup). Before Backup Script Backup Script in loop DECLARE @FLAG INT SET @FLAG = 1 WHILE(@FLAG < 1000) BEGIN BACKUP DATABASE [model] TO  DISK = N'D:\model.bak' SET @FLAG = @FLAG + 1 END GO After Backup Script Why did this happen? The model database was in full recovery mode and taking full backup is logged operation. As there was no log backup and only full backup was performed on the model database, the size of the log file kept growing. Resolution: Change the backup mode of model database from “Full Recovery” to “Simple Recovery.”. Take full backup of the model database “only” when you change something in the model database. Let me know if you have encountered a situation like this? If so, how did you resolve it? It will be interesting to know about your experience. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, PostADay, SQL, SQL Authority, SQL Backup and Restore, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, T SQL, Technology

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• Add a Sleep Timer to Windows 7 Media Center

  - by DigitalGeekery

  Do you make it a habit of falling asleep at night while watching Windows Media Center? Today we are going to take a look at the MC7 Sleep Timer for Windows 7 Media Center. This simple little plugin allows you to schedule an automatic shutdown time in Media Center. Note: At this point MC7 Sleep Timer doesn’t work with extenders. If you’re using ClamAV or Panda it may detect this plugin as a virus, we’ve tested it and this is a false positive for these two antivirus apps. Installation and Usage Download and install MC7 Sleep Timer. (See download below) After the installation is finished, you will find MC7 Sleep Timer located in the Media Center Extras Library. Click on the tile to open the timer and configure your settings. The MC7 Sleep Timer will open in full screen mode. You can choose to shutdown the PC after 30 or 60 minutes, create a custom length shutdown timer at any 5 minute interval, or select the exact time you want the PC to shutdown.  After setting your PC to shutdown, you’ll get an audio confirmation. To set a custom timer length, scroll to the “Custom timer” option and click right or left on your Media Center remote or, the right or left arrow keys, to choose how many minutes before shutdown. To schedule a shutdown for a certain time, browse to the “Shutdown at time” button, and scroll right or left with the arrow keys on the keyboard or remote. When you’ve chosen your time, hit “Enter” on the keyboard or “OK” on the remote.   Clicking the “Monitor Off” button will turn off only the monitor and “Cancel Timer” will cancel your shutdown request. Conclusion If you often find yourself falling asleep every night watching Media Center and then fumbling and stumbling in the middle of the night to shutdown your computer, MC7 Sleep timer might just be a perfect addition to your Media Center setup. Download MC7 Sleep Timer Similar Articles Productive Geek Tips Using Netflix Watchnow in Windows Vista Media Center (Gmedia)Re-Enable Sleep Mode in Windows VistaSchedule Updates for Windows Media CenterIntegrate Hulu Desktop and Windows Media Center in Windows 7Add Color Coding to Windows 7 Media Center Program Guide TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 PCmover Professional Use My TextTools to Edit and Organize Text Discovery Channel LIFE Theme (Win7) Increase the size of Taskbar Previews (Win 7) Scan your PC for nasties with Panda ActiveScan CleanMem – Memory Cleaner AceStock – The Personal Stock Monitor

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• Syncing Data with a Server using Silverlight and HTTP Polling Duplex

  - by dwahlin

  Many applications have the need to stay in-sync with data provided by a service. Although web applications typically rely on standard polling techniques to check if data has changed, Silverlight provides several interesting options for keeping an application in-sync that rely on server “push” technologies. A few years back I wrote several blog posts covering different “push” technologies available in Silverlight that rely on sockets or HTTP Polling Duplex. We recently had a project that looked like it could benefit from pushing data from a server to one or more clients so I thought I’d revisit the subject and provide some updates to the original code posted. If you’ve worked with AJAX before in Web applications then you know that until browsers fully support web sockets or other duplex (bi-directional communication) technologies that it’s difficult to keep applications in-sync with a server without relying on polling. The problem with polling is that you have to check for changes on the server on a timed-basis which can often be wasteful and take up unnecessary resources. With server “push” technologies, data can be pushed from the server to the client as it changes. Once the data is received, the client can update the user interface as appropriate. Using “push” technologies allows the client to listen for changes from the data but stay 100% focused on client activities as opposed to worrying about polling and asking the server if anything has changed. Silverlight provides several options for pushing data from a server to a client including sockets, TCP bindings and HTTP Polling Duplex.  Each has its own strengths and weaknesses as far as performance and setup work with HTTP Polling Duplex arguably being the easiest to setup and get going.  In this article I’ll demonstrate how HTTP Polling Duplex can be used in Silverlight 4 applications to push data and show how you can create a WCF server that provides an HTTP Polling Duplex binding that a Silverlight client can consume.   What is HTTP Polling Duplex? Technologies that allow data to be pushed from a server to a client rely on duplex functionality. Duplex (or bi-directional) communication allows data to be passed in both directions.  A client can call a service and the server can call the client. HTTP Polling Duplex (as its name implies) allows a server to communicate with a client without forcing the client to constantly poll the server. It has the benefit of being able to run on port 80 making setup a breeze compared to the other options which require specific ports to be used and cross-domain policy files to be exposed on port 943 (as with sockets and TCP bindings). Having said that, if you’re looking for the best speed possible then sockets and TCP bindings are the way to go. But, they’re not the only game in town when it comes to duplex communication. The first time I heard about HTTP Polling Duplex (initially available in Silverlight 2) I wasn’t exactly sure how it was any better than standard polling used in AJAX applications. I read the Silverlight SDK, looked at various resources and generally found the following definition unhelpful as far as understanding the actual benefits that HTTP Polling Duplex provided: "The Silverlight client periodically polls the service on the network layer, and checks for any new messages that the service wants to send on the callback channel. The service queues all messages sent on the client callback channel and delivers them to the client when the client polls the service." Although the previous definition explained the overall process, it sounded as if standard polling was used. Fortunately, Microsoft’s Scott Guthrie provided me with a more clear definition several years back that explains the benefits provided by HTTP Polling Duplex quite well (used with his permission): "The [HTTP Polling Duplex] duplex support does use polling in the background to implement notifications – although the way it does it is different than manual polling. It initiates a network request, and then the request is effectively “put to sleep” waiting for the server to respond (it doesn’t come back immediately). The server then keeps the connection open but not active until it has something to send back (or the connection times out after 90 seconds – at which point the duplex client will connect again and wait). This way you are avoiding hitting the server repeatedly – but still get an immediate response when there is data to send." After hearing Scott’s definition the light bulb went on and it all made sense. A client makes a request to a server to check for changes, but instead of the request returning immediately, it parks itself on the server and waits for data. It’s kind of like waiting to pick up a pizza at the store. Instead of calling the store over and over to check the status, you sit in the store and wait until the pizza (the request data) is ready. Once it’s ready you take it back home (to the client). This technique provides a lot of efficiency gains over standard polling techniques even though it does use some polling of its own as a request is initially made from a client to a server. So how do you implement HTTP Polling Duplex in your Silverlight applications? Let’s take a look at the process by starting with the server. Creating an HTTP Polling Duplex WCF Service Creating a WCF service that exposes an HTTP Polling Duplex binding is straightforward as far as coding goes. Add some one way operations into an interface, create a client callback interface and you’re ready to go. The most challenging part comes into play when configuring the service to properly support the necessary binding and that’s more of a cut and paste operation once you know the configuration code to use. To create an HTTP Polling Duplex service you’ll need to expose server-side and client-side interfaces and reference the System.ServiceModel.PollingDuplex assembly (located at C:\Program Files (x86)\Microsoft SDKs\Silverlight\v4.0\Libraries\Server on my machine) in the server project. For the demo application I upgraded a basketball simulation service to support the latest polling duplex assemblies. The service simulates a simple basketball game using a Game class and pushes information about the game such as score, fouls, shots and more to the client as the game changes over time. Before jumping too far into the game push service, it’s important to discuss two interfaces used by the service to communicate in a bi-directional manner. The first is called IGameStreamService and defines the methods/operations that the client can call on the server (see Listing 1). The second is IGameStreamClient which defines the callback methods that a server can use to communicate with a client (see Listing 2).   [ServiceContract(Namespace = "Silverlight", CallbackContract = typeof(IGameStreamClient))] public interface IGameStreamService { [OperationContract(IsOneWay = true)] void GetTeamData(); } Listing 1. The IGameStreamService interface defines server operations that can be called on the server.   [ServiceContract] public interface IGameStreamClient { [OperationContract(IsOneWay = true)] void ReceiveTeamData(List<Team> teamData); [OperationContract(IsOneWay = true, AsyncPattern=true)] IAsyncResult BeginReceiveGameData(GameData gameData, AsyncCallback callback, object state); void EndReceiveGameData(IAsyncResult result); } Listing 2. The IGameStreamClient interfaces defines client operations that a server can call.   The IGameStreamService interface is decorated with the standard ServiceContract attribute but also contains a value for the CallbackContract property.  This property is used to define the interface that the client will expose (IGameStreamClient in this example) and use to receive data pushed from the service. Notice that each OperationContract attribute in both interfaces sets the IsOneWay property to true. This means that the operation can be called and passed data as appropriate, however, no data will be passed back. Instead, data will be pushed back to the client as it’s available.  Looking through the IGameStreamService interface you can see that the client can request team data whereas the IGameStreamClient interface allows team and game data to be received by the client. One interesting point about the IGameStreamClient interface is the inclusion of the AsyncPattern property on the BeginReceiveGameData operation. I initially created this operation as a standard one way operation and it worked most of the time. However, as I disconnected clients and reconnected new ones game data wasn’t being passed properly. After researching the problem more I realized that because the service could take up to 7 seconds to return game data, things were getting hung up. By setting the AsyncPattern property to true on the BeginReceivedGameData operation and providing a corresponding EndReceiveGameData operation I was able to get around this problem and get everything running properly. I’ll provide more details on the implementation of these two methods later in this post. Once the interfaces were created I moved on to the game service class. The first order of business was to create a class that implemented the IGameStreamService interface. Since the service can be used by multiple clients wanting game data I added the ServiceBehavior attribute to the class definition so that I could set its InstanceContextMode to InstanceContextMode.Single (in effect creating a Singleton service object). Listing 3 shows the game service class as well as its fields and constructor.   [ServiceBehavior(ConcurrencyMode = ConcurrencyMode.Multiple, InstanceContextMode = InstanceContextMode.Single)] public class GameStreamService : IGameStreamService { object _Key = new object(); Game _Game = null; Timer _Timer = null; Random _Random = null; Dictionary<string, IGameStreamClient> _ClientCallbacks = new Dictionary<string, IGameStreamClient>(); static AsyncCallback _ReceiveGameDataCompleted = new AsyncCallback(ReceiveGameDataCompleted); public GameStreamService() { _Game = new Game(); _Timer = new Timer { Enabled = false, Interval = 2000, AutoReset = true }; _Timer.Elapsed += new ElapsedEventHandler(_Timer_Elapsed); _Timer.Start(); _Random = new Random(); }} Listing 3. The GameStreamService implements the IGameStreamService interface which defines a callback contract that allows the service class to push data back to the client. By implementing the IGameStreamService interface, GameStreamService must supply a GetTeamData() method which is responsible for supplying information about the teams that are playing as well as individual players.  GetTeamData() also acts as a client subscription method that tracks clients wanting to receive game data.  Listing 4 shows the GetTeamData() method. public void GetTeamData() { //Get client callback channel var context = OperationContext.Current; var sessionID = context.SessionId; var currClient = context.GetCallbackChannel<IGameStreamClient>(); context.Channel.Faulted += Disconnect; context.Channel.Closed += Disconnect; IGameStreamClient client; if (!_ClientCallbacks.TryGetValue(sessionID, out client)) { lock (_Key) { _ClientCallbacks[sessionID] = currClient; } } currClient.ReceiveTeamData(_Game.GetTeamData()); //Start timer which when fired sends updated score information to client if (!_Timer.Enabled) { _Timer.Enabled = true; } } Listing 4. The GetTeamData() method subscribes a given client to the game service and returns. The key the line of code in the GetTeamData() method is the call to GetCallbackChannel<IGameStreamClient>().  This method is responsible for accessing the calling client’s callback channel. The callback channel is defined by the IGameStreamClient interface shown earlier in Listing 2 and used by the server to communicate with the client. Before passing team data back to the client, GetTeamData() grabs the client’s session ID and checks if it already exists in the _ClientCallbacks dictionary object used to track clients wanting callbacks from the server. If the client doesn’t exist it adds it into the collection. It then pushes team data from the Game class back to the client by calling ReceiveTeamData().  Since the service simulates a basketball game, a timer is then started if it’s not already enabled which is then used to randomly send data to the client. When the timer fires, game data is pushed down to the client. Listing 5 shows the _Timer_Elapsed() method that is called when the timer fires as well as the SendGameData() method used to send data to the client. void _Timer_Elapsed(object sender, ElapsedEventArgs e) { int interval = _Random.Next(3000, 7000); lock (_Key) { _Timer.Interval = interval; _Timer.Enabled = false; } SendGameData(_Game.GetGameData()); } private void SendGameData(GameData gameData) { var cbs = _ClientCallbacks.Where(cb => ((IContextChannel)cb.Value).State == CommunicationState.Opened); for (int i = 0; i < cbs.Count(); i++) { var cb = cbs.ElementAt(i).Value; try { cb.BeginReceiveGameData(gameData, _ReceiveGameDataCompleted, cb); } catch (TimeoutException texp) { //Log timeout error } catch (CommunicationException cexp) { //Log communication error } } lock (_Key) _Timer.Enabled = true; } private static void ReceiveGameDataCompleted(IAsyncResult result) { try { ((IGameStreamClient)(result.AsyncState)).EndReceiveGameData(result); } catch (CommunicationException) { // empty } catch (TimeoutException) { // empty } } LIsting 5. _Timer_Elapsed is used to simulate time in a basketball game. When _Timer_Elapsed() fires the SendGameData() method is called which iterates through the clients wanting to be notified of changes. As each client is identified, their respective BeginReceiveGameData() method is called which ultimately pushes game data down to the client. Recall that this method was defined in the client callback interface named IGameStreamClient shown earlier in Listing 2. Notice that BeginReceiveGameData() accepts _ReceiveGameDataCompleted as its second parameter (an AsyncCallback delegate defined in the service class) and passes the client callback as the third parameter. The initial version of the sample application had a standard ReceiveGameData() method in the client callback interface. However, sometimes the client callbacks would work properly and sometimes they wouldn’t which was a little baffling at first glance. After some investigation I realized that I needed to implement an asynchronous pattern for client callbacks to work properly since 3 – 7 second delays are occurring as a result of the timer. Once I added the BeginReceiveGameData() and ReceiveGameDataCompleted() methods everything worked properly since each call was handled in an asynchronous manner. The final task that had to be completed to get the server working properly with HTTP Polling Duplex was adding configuration code into web.config. In the interest of brevity I won’t post all of the code here since the sample application includes everything you need. However, Listing 6 shows the key configuration code to handle creating a custom binding named pollingDuplexBinding and associate it with the service’s endpoint.   <bindings> <customBinding> <binding name="pollingDuplexBinding"> <binaryMessageEncoding /> <pollingDuplex maxPendingSessions="2147483647" maxPendingMessagesPerSession="2147483647" inactivityTimeout="02:00:00" serverPollTimeout="00:05:00"/> <httpTransport /> </binding> </customBinding> </bindings> <services> <service name="GameService.GameStreamService" behaviorConfiguration="GameStreamServiceBehavior"> <endpoint address="" binding="customBinding" bindingConfiguration="pollingDuplexBinding" contract="GameService.IGameStreamService"/> <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" /> </service> </services>   Listing 6. Configuring an HTTP Polling Duplex binding in web.config and associating an endpoint with it. Calling the Service and Receiving “Pushed” Data Calling the service and handling data that is pushed from the server is a simple and straightforward process in Silverlight. Since the service is configured with a MEX endpoint and exposes a WSDL file, you can right-click on the Silverlight project and select the standard Add Service Reference item. After the web service proxy is created you may notice that the ServiceReferences.ClientConfig file only contains an empty configuration element instead of the normal configuration elements created when creating a standard WCF proxy. You can certainly update the file if you want to read from it at runtime but for the sample application I fed the service URI directly to the service proxy as shown next: var address = new EndpointAddress("http://localhost.:5661/GameStreamService.svc"); var binding = new PollingDuplexHttpBinding(); _Proxy = new GameStreamServiceClient(binding, address); _Proxy.ReceiveTeamDataReceived += _Proxy_ReceiveTeamDataReceived; _Proxy.ReceiveGameDataReceived += _Proxy_ReceiveGameDataReceived; _Proxy.GetTeamDataAsync(); This code creates the proxy and passes the endpoint address and binding to use to its constructor. It then wires the different receive events to callback methods and calls GetTeamDataAsync().  Calling GetTeamDataAsync() causes the server to store the client in the server-side dictionary collection mentioned earlier so that it can receive data that is pushed.  As the server-side timer fires and game data is pushed to the client, the user interface is updated as shown in Listing 7. Listing 8 shows the _Proxy_ReceiveGameDataReceived() method responsible for handling the data and calling UpdateGameData() to process it.   Listing 7. The Silverlight interface. Game data is pushed from the server to the client using HTTP Polling Duplex. void _Proxy_ReceiveGameDataReceived(object sender, ReceiveGameDataReceivedEventArgs e) { UpdateGameData(e.gameData); } private void UpdateGameData(GameData gameData) { //Update Score this.tbTeam1Score.Text = gameData.Team1Score.ToString(); this.tbTeam2Score.Text = gameData.Team2Score.ToString(); //Update ball visibility if (gameData.Action != ActionsEnum.Foul) { if (tbTeam1.Text == gameData.TeamOnOffense) { AnimateBall(this.BB1, this.BB2); } else //Team 2 { AnimateBall(this.BB2, this.BB1); } } if (this.lbActions.Items.Count > 9) this.lbActions.Items.Clear(); this.lbActions.Items.Add(gameData.LastAction); if (this.lbActions.Visibility == Visibility.Collapsed) this.lbActions.Visibility = Visibility.Visible; } private void AnimateBall(Image onBall, Image offBall) { this.FadeIn.Stop(); Storyboard.SetTarget(this.FadeInAnimation, onBall); Storyboard.SetTarget(this.FadeOutAnimation, offBall); this.FadeIn.Begin(); } Listing 8. As the server pushes game data, the client’s _Proxy_ReceiveGameDataReceived() method is called to process the data. In a real-life application I’d go with a ViewModel class to handle retrieving team data, setup data bindings and handle data that is pushed from the server. However, for the sample application I wanted to focus on HTTP Polling Duplex and keep things as simple as possible.   Summary Silverlight supports three options when duplex communication is required in an application including TCP bindins, sockets and HTTP Polling Duplex. In this post you’ve seen how HTTP Polling Duplex interfaces can be created and implemented on the server as well as how they can be consumed by a Silverlight client. HTTP Polling Duplex provides a nice way to “push” data from a server while still allowing the data to flow over port 80 or another port of your choice.   Sample Application Download

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• How do I determine if my controller is in IDE or AHCI mode in Linux?

  - by philcolbourn

  I have an old MacBook Pro 4,1 (early 2008) - but I suspect an answer would apply to many MacBook Pros. It has an Intel IDE/SATA controller (ICH8M/ICH8M-E). I have installed a patched MBR that is supposed to put my controller into AHCI mode. It does this by setting some controller port value that I don't understand. This seems to work as I get this from lspci: 00:1f.1 IDE interface: Intel Corporation 82801HM/HEM (ICH8M/ICH8M-E) IDE Controller (rev 03) 00:1f.2 IDE interface: Intel Corporation 82801HM/HEM (ICH8M/ICH8M-E) SATA Controller [AHCI mode] (rev 03) Now most, perhaps all, sites that provide a solution (enabling AHCI) suggest that after a sleep/wake cycle that a controller will revert to IDE mode due to how Apple support Windows. They recommend disabling sleep. From author of patchedcode.bin I think Enabling AHCI for Windows on MacBooks NB: I do not have bootcamp installed and I do not have Windows installed. Is there a way to prove that my controller is in IDE or AHCI mode? Background Data Using patchedcode.bin MBR I get this in syslog: Jun 12 22:33:22 max kernel: [ 1.860955] ahci 0000:00:1f.2: version 3.0 Jun 12 22:33:22 max kernel: [ 1.861052] ahci 0000:00:1f.2: irq 45 for MSI/MSI-X Jun 12 22:33:22 max kernel: [ 1.861117] ahci 0000:00:1f.2: AHCI 0001.0100 32 slots 3 ports 1.5 Gbps 0x1 impl SATA mode Jun 12 22:33:22 max kernel: [ 1.861120] ahci 0000:00:1f.2: flags: 64bit ncq sntf pm led clo pio slum part ccc ems Jun 12 22:33:22 max kernel: [ 1.861130] ahci 0000:00:1f.2: setting latency timer to 64 Jun 12 22:33:22 max kernel: [ 1.880880] ACPI: Video Device [GFX0] (multi-head: yes rom: no post: no) Jun 12 22:33:22 max kernel: [ 1.880983] scsi2 : ahci Jun 12 22:33:22 max kernel: [ 1.884552] scsi3 : ahci Jun 12 22:33:22 max kernel: [ 1.886932] scsi4 : ahci Jun 12 22:33:22 max kernel: [ 1.886998] ata3: SATA max UDMA/133 abar m2048@0xdb504000 port 0xdb504100 irq 45 Jun 12 22:33:22 max kernel: [ 1.887000] ata4: DUMMY Jun 12 22:33:22 max kernel: [ 1.887002] ata5: DUMMY Jun 12 22:33:22 max kernel: [ 2.204103] ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300) Jun 12 22:33:22 max kernel: [ 2.204656] ata3.00: ATA-8: FUJITSU MHY2200BH, 0081000D, max UDMA/100 Jun 12 22:33:22 max kernel: [ 2.204662] ata3.00: 390721968 sectors, multi 16: LBA48 NCQ (depth 31/32), AA Jun 12 22:33:22 max kernel: [ 2.205324] ata3.00: configured for UDMA/100 Jun 12 22:33:22 max kernel: [ 2.205554] scsi 2:0:0:0: Direct-Access ATA FUJITSU MHY2200B 0081 PQ: 0 ANSI: 5 Using my original MBR I get this from syslog: Jun 13 18:07:13 max kernel: [ 0.622861] ata_piix 0000:00:1f.1: version 2.13 Jun 13 18:07:13 max kernel: [ 0.622869] ata_piix 0000:00:1f.1: power state changed by ACPI to D0 Jun 13 18:07:13 max kernel: [ 0.622924] ata_piix 0000:00:1f.1: setting latency timer to 64 Jun 13 18:07:13 max kernel: [ 0.623339] scsi0 : ata_piix Jun 13 18:07:13 max kernel: [ 0.623730] scsi1 : ata_piix Jun 13 18:07:13 max kernel: [ 0.623765] ata1: PATA max UDMA/100 cmd 0x8108 ctl 0x811c bmdma 0x80e0 irq 21 Jun 13 18:07:13 max kernel: [ 0.623767] ata2: PATA max UDMA/100 cmd 0x8100 ctl 0x8118 bmdma 0x80e8 irq 21 Jun 13 18:07:13 max kernel: [ 0.623810] ata_piix 0000:00:1f.2: MAP [ Jun 13 18:07:13 max kernel: [ 0.623811] P0 -- -- -- ] Jun 13 18:07:13 max kernel: [ 0.623866] ata_piix 0000:00:1f.2: setting latency timer to 64 Jun 13 18:07:13 max kernel: [ 0.624241] scsi2 : ata_piix Jun 13 18:07:13 max kernel: [ 0.624558] scsi3 : ata_piix Jun 13 18:07:13 max kernel: [ 0.624862] ata3: SATA max UDMA/133 cmd 0x80f8 ctl 0x8114 bmdma 0x8020 irq 18 Jun 13 18:07:13 max kernel: [ 0.624865] ata4: SATA max UDMA/133 cmd 0x80f0 ctl 0x8110 bmdma 0x8028 irq 18 Jun 13 18:07:13 max kernel: [ 1.208879] ata3.00: ATA-8: FUJITSU MHY2200BH, 0081000D, max UDMA/100 Jun 13 18:07:13 max kernel: [ 1.208882] ata3.00: 390721968 sectors, multi 16: LBA48 NCQ (depth 0/32) Jun 13 18:07:13 max kernel: [ 1.208961] ata1.01: ATAPI: MATSHITA DVD+/-RW UJ-867S, 1.00, max UDMA/33 Jun 13 18:07:13 max kernel: [ 1.216186] ata3.00: configured for UDMA/100 Jun 13 18:07:13 max kernel: [ 1.224396] ata1.01: configured for UDMA/33

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• Using Pandora in Boxee

  - by Mysticgeek

  Boxee is a very cool multimedia app that lets you access and stream your digital media in many different ways. There’s also a lot of extra apps included with it, and today we take a look at the Pandora application in Boxee. Pandora has been a favorite free music streaming service that’s been around for some time now. Though there are new services like Grooveshark and Spotify that are competing, Pandora is still a reliable choice. It’s now included in Boxee, and here we take a look at using it. Create a Pandora Account If you don’t already have a Pandora account, you can easily create one at their website (link below). Pandora in Boxee To start using Pandora from Boxee, launch Boxee and from the main menu select Apps. Now from the My Apps section select Pandora. When the Pandora app menu comes up, select Start. Now you need to log into your Pandora account. After signing in you can starting listening to your stations, viewing artist info, and cover art. All while enjoying some cool visuals in the background. From the controls at the top you can control playback, skip songs, control volume, get information on why a song was picked, and give a song a thumbs up or down. Of course you can also pull up your stations and switch between them and add more. The same features you’ve come to expect from Pandora are available. One thing we noticed missing is not being able to click on the band or artist to get additional information about them –which you can do on the Pandora site and desktop app. But that isn’t a deal breaker by any means, and we’re hoping the feature will be added in the future. Then while you’re checking out other apps, shows, and setting within Boxee, the cool visuals continue and the songs from you stations keep playing. Conclusion Pandora is a great streaming music service and a welcome edition to Boxee. If you’re a fan of Pandora now you can listen to it on your home theater system. If you’re new to Boxee, make sure to check out our article on getting started with Boxee. Create a Pandora Account Download Boxee Similar Articles Productive Geek Tips Integrate Boxee with Media Center in Windows 7Getting Started with BoxeePandora One is a Worthwhile Upgrade for Your Current Pandora AccountCreate Music Video Playlists with TubeRadio.fmSpotify is an Awesome Music Streaming Service TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 PCmover Professional Draw Online using Harmony How to Browse Privately in Firefox Kill Processes Quickly with Process Assassin Need to Come Up with a Good Name? Try Wordoid StockFox puts a Lightweight Stock Ticker in your Statusbar Explore Google Public Data Visually

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• Control Your Favorite Music Player from Firefox

  - by Asian Angel

  Do you love listening to music while you browse? Now you can access and control your favorite music player directly from Firefox with the FoxyTunes extension. FoxyTunes in Action Once you have installed the extension and restarted Firefox you will see the FoxyTunes Toolbar located in the “Status Bar”. The default media app is Windows Media Player but can be easily changed. Here are the buttons/items available with the default settings: Search, FoxyTunes Main Menu, Show Player, Select Player, Previous Track, Play, Next Track, Mute On/Off, Volume, Play File, Twitty Tunes, Foxy Tunes Search/Explore, Open FoxyTunes Planet, & Toggle Visibility/Drag and drop to move. Note: You can hide or show individual buttons/items using the “FoxyTunes Menus”. Curious about the media players that FoxyTunes works with? Here is a complete listing…that definitely looks terrific! Notice that the currently selected media app is “bold and blue”. For our example we chose Spotify which we have previously covered. Keep in mind that you may or may not need to have your favorite media app open prior to “starting” FoxyTunes up (i.e. Play Button). Here is a good look at the “FoxyTunes Main Menu” and “Controls Sub-Menu”. The “Extras Menu”…if you click on skins you will be taken to the FoxyTunes Skins webpage. Here is a closer look into the “Configurations Menu” and one of the sub-menus. You do not need to look for options in the “Add-ons Manager Window”…everything you need is contained in these menus. If you do not like having FoxyTunes in the “Status Bar” you can easily drag and drop it to another toolbar. You can also condense the appearance of FoxyTunes using the small “triangle buttons” that are located in different spots throughout the “FoxyTunes Toolbar”. With just a click or two you can greatly reduce its’ impact on your UI. Conclusion If you love listening to music while browsing then the FoxyTunes extension will let you take care of everything right from your browser. Links Download the FoxyTunes extension (Mozilla Add-ons) Download the FoxyTunes extension (Extension Homepage) *Note: FoxyTunes add-ins for Internet Explorer and Yahoo! Messenger available here. Similar Articles Productive Geek Tips Fixing When Windows Media Player Library Won’t Let You Add Files5 Awesome Music Desktop Gadgets for Vista and Windows 7Make Windows Media Player Automatically Open in Mini Player ModeSearch for Install Packages from the Ubuntu Command LineInstalling Windows Media Player Plugin for Firefox TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 Case Study – How to Optimize Popular Wordpress Sites Restore Hidden Updates in Windows 7 & Vista Iceland an Insurance Job? Find Downloads and Add-ins for Outlook Recycle ! Find That Elusive Icon with FindIcons

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• Make Your Coworker’s Day in Ubuntu

  - by Trevor Bekolay

  It can be difficult to express your appreciation for your coworkers in person – what if they take it the wrong way, or think you’re fishing for a compliment of your own? If you use Ubuntu in your office, here’s a quick way to show your appreciation while avoiding the social pitfalls of face-to-face communication. Make sure their computer is locked An unlocked computer is a vulnerable computer. Vulnerable to malware sure, but much more vulnerable to the local office prankster, who thinks it’s hilarious to make a screenshot of your desktop, change your background to that screenshot, then hide all of your desktop icons. These incidents have taught us that you should lock your computer when taking a break. Hopefully your coworker has learned the same lesson, and pressed Ctrl+Alt+L before stepping out for a coffee. Leave a carefully worded message Now is your opportunity to leave your message of appreciation on your coworker’s computer. Click on the Leave Message button and type away! Click on Save. Wait, possibly in the shadows If you sit near your coworker, then wait for them to return. If you sit farther away, then try to listen for their footsteps. Eventually they will return to their computer and enter their password to unlock it. Observe smile Once they return to their desktop, they will be greeted with the message you left. Look to see if they appreciated the message, and if so, feel free to take credit. If they look annoyed, or press the Cancel button, continue on with your day like nothing happened. You may also try to slip into a conversation that you saw Jerry tinkering with their computer earlier. Conclusion Leaving your coworkers a nice message is easy and can brighten up their dull afternoon. We’re pretty sure that this method can only be used for good and not evil, but if you have any other suggestions of messages to leave, let us know in the comments! Similar Articles Productive Geek Tips Make Ubuntu Automatically Save Changes to Your SessionAdding extra Repositories on UbuntuInstall IceWM on Ubuntu LinuxInstall Blackbox on Ubuntu LinuxMake Firefox Display Large Images Full Size TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 PCmover Professional Optimize your computer the Microsoft way Stormpulse provides slick, real time weather data Geek Parents – Did you try Parental Controls in Windows 7? Change DNS servers on the fly with DNS Jumper Live PDF Searches PDF Files and Ebooks Converting Mp4 to Mp3 Easily

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• Disable IE 8 Thumbnail Previews on Windows 7 Taskbar

  - by Asian Angel

  The Aero thumbnail previews are a great new feature, but if you are not a fan of the flashy eye-candy, you can get rid of them with a simple tweak. Here is how to do it. Before Here we are…Internet Explorer 8 with a lot of How-To Geek Network goodness ready to go. The Taskbar Thumbnail Previews look very nice, but perhaps they take up too much room for those of you who like to keep things simple. The Taskbar Icon has the classic “fanned edge” look just like any other software with Taskbar Thumbnail Previews active. Disabling the Thumbnail Previews If you want to deactivate the Taskbar Thumbnail Previews for Internet Explorer, it is quite easy and will only take you a few moments to complete. Open IE and go to Tools \ Internet Options. When the Internet Options Window opens you will already be on the General Tab. Under the Tabs Section, click on the Settings button. The Tabbed Browsing Settings window opens. Uncheck Show previews for individual tabs in the taskbar and click OK. When you are returned to the Internet Options Window, click OK once again to totally exit out. Note: A browser restart will be required for the changes to take effect. After you have restarted Internet Explorer, you will see the simple default Taskbar Thumbnail Preview and standard icon look. Conclusion If you have been looking to disable the Taskbar Thumbnail Previews for Internet Explorer, then you are only a few clicks away from satisfaction. If you want to change it back, it is as simple as re-enabling the Show previews for individual tabs in the taskbar setting. Similar Articles Productive Geek Tips Increase the size of Taskbar Preview Thumbnails in Windows 7Vista Style Popup Previews for Firefox TabsWorkaround for Vista Taskbar Thumbnail Previews Not Showing CorrectlyDisable Thumbnail Previews in Windows 7 or Vista ExplorerGet Vista Taskbar Thumbnail Previews in Windows XP TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Acronis Online Backup DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows Fun with 47 charts and graphs Tomorrow is Mother’s Day Check the Average Speed of YouTube Videos You’ve Watched OutlookStatView Scans and Displays General Usage Statistics How to Add Exceptions to the Windows Firewall Office 2010 reviewed in depth by Ed Bott

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• B2B and B2C alike… but a little different – Oracle Commerce named Leader in Forrester B2B Commerce Wave

  - by Katrina Gosek

  We weren’t surprised to see Oracle Commerce positioned as a Leader in Forrester Research, Inc.’s first Commerce Wave focused on B2B, “The Forrester Wave™: B2B Commerce Suites, Q4 2013,” released earlier this month. We believe that the report validates much of what we’ve heard from our largest customers – the world’s largest distribution, manufacturing and high-tech customers who sell billions of dollars of goods and services to other businesses through their Web channels. More importantly, we feel that the report confirms something very important: B2B and B2C Commerce are alike… but a little different. B2B and B2C Commerce are alike… Clearly, B2C experiences have set expectations for B2B. Every B2B buyer is a consumer at home and brings the same expectations to a website selling electronic components, aftermarket parts, or MRO products. Forrester calls these rich consumer-based capabilities that help B2B customers do their jobs “table stakes”: front-office content, community, and commerce features that meet customer expectations for 24x7x365 ordering, real-time customer service, and expedited shipping — both online and on mobile devices: “Whether they are just beginning to sell online or are in the late stages of launching a next-generation site, B2B eCommerce operations today must: offer a customer experience standard comparable to what leading b2c sites now offer; address the growing influence that mobile devices are having in the workplace; make a qualitative and quantitative business case that drives sustained investment.” Just five years ago, many of our B2B customers’ online business comprised only 5-10% of their total revenue. Today, when we speak to those same brands, we hear about double and triple digit growth in their online channels. Many have seen the percentage of the business they perform in their web channels cross the 30-50% threshold. You can hear first-hand from several Oracle Commerce B2B customers about the success they are seeing, and what they’re trying to accomplish (Carolina Biological, Premier Farnell, DeliXL, Elsevier). It seems that this market momentum is likely the reason Forrester broke out the separate B2B Commerce Wave from the B2C Wave. In fact, B2B is becoming the larger force in commerce, expected to collect twice the online dollars of B2C this year ($559 billion). But a little different… Despite the similarities, there is a key and very important difference between B2C and B2B. Unlike a consumer shopping for shoes, a business shopper buying from a distributor or manufacturer is coming to the Web channel as a part of their job. So in addition to a rich, consumer-like experience this shopper expects, these B2B buyers need quoting tools and complex pricing capabilities, like eProcurement, bulk order entry, and other self-service tools such as account, contract and organization management. Forrester also is emphasizing three additional “back-end” tools and capabilities their clients say they need to drive growth in their B2B online channels: i) product information management (PIM), which provides a single system of record for large part lists and product catalogs; ii) web content management (WCM), needed to manage large volumes of unstructured marketing information, and iii) order management systems (OMS), which manage and orchestrate the complex B2B order life cycle from quote through approval, submission to manufacturing, distribution and delivery. We would like to expand on each of these 3 areas: As Forrester suggests, back-end PIM is definitely needed by B2B Commerce providers. Most B2B companies have made significant investments in enterprise-grade PIMs, given the importance of product data management for aggregation and syndication of content, product attribution, analytics, and handling of complex workflows. While in principle it may sound appealing to have a PIM as part of a commerce offering (especially for SMBs who have to do more with less), our customers have typically found that PIM in a commerce platform is largely redundant with what they already have in-place, and is not fully-featured or robust enough to handle the complexity of the product data sets that B2B distributors and manufacturers usually handle. To meet the PIM needs for commerce, Oracle offers enterprise PIM (Product Hub/Fusion PIM) and a robust enterprise data quality product (EDQP) integrated with the Oracle Commerce solution. These are key differentiators of our offering and these capabilities are becoming even more tightly integrated with Oracle Commerce over time. For Commerce, what customers really need is a robust product catalog and content management system for enabling business users to further enrich and ready catalog and content data to be presented and sold online.  This has been a significant area of investment in the Oracle Commerce platform , which continue to get stronger. We see this combination of capabilities as best meeting the needs of our customers for a commerce platform without adding a largely redundant, less functional PIM in the commerce front-end.  On the topic of web content management, we were pleased to see Forrester cite Oracle’s differentiated digital experience capability in this area and the “unique opportunity in the market to lead the convergence of commerce and content management with the amalgamation of Oracle Commerce with WebCenter Sites (formally FatWire).” Strong content management capabilities are critical for distributors and manufacturers who are frequently serving an engineering audience coming to their websites to conduct product research in search of technical data sheets, drawings, videos and more. The convergence of content, commerce, and experience is critical for B2B brands selling online. Regarding order management, Forrester notes that many businesses use their existing back-end enterprise resource planning (ERP) systems to manage order life cycles.  We hear the same from most of our B2B customers, as they already have an ERP system—if not several of them—and are not interested in yet another one. So what do we take away from the Wave results? Forrester notes that the Oracle Commerce Platform “has always had strong B2B commerce capabilities and Oracle certainly has an exhaustive list of B2B customers using the solution.”  What makes us excited about developing leading B2B solutions are the close relationships with our customers and the clear opportunity in the market – which we'll address in an exciting new release planned for the next 12 months. Oracle has one of the world’s largest B2B customer bases, providing leading solutions across key business-to-business functions – from marketing, sales automation, and service to master data management, and ERP. To learn more about Oracle’s Commerce product vision and strategy, visit our website and check out these other B2B Commerce Resources: -       2013 B2B Commerce Trends Report -       B2B Commerce Whitepaper: Consumerization, Complexity, Change -       B2B Commerce Webcast: What Industry Trend Setters Do Right -       Internet Retailer, Web Drives Sales for B2B Companies -       Internet Retailer Article, The Web Means Business: B2B Companies Beef Up Their Websites,        borrowing from b2c retailers and breaking new ground -       Internet Retailer Article, B2B e-Commerce is poised for growth

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• SQL SERVER – Online Index Rebuilding Index Improvement in SQL Server 2012

  - by pinaldave

  Have you ever faced situation when you see something working and you feel it should not be working? Well, I had similar moments few days ago. I know that SQL Server 2008 supports online indexing. However, I also know that I cannot rebuild index ONLINE if I have used VARCHAR(MAX), NVARCHAR(MAX) or few other data types. While I held my belief very strongly I came across situation, where I had to go online and do little bit reading from Book Online. Here is the similar example. First of all – run following code in SQL Server 2008 or SQL Server 2008 R2. USE TempDB GO CREATE TABLE TestTable (ID INT, FirstCol NVARCHAR(10), SecondCol NVARCHAR(MAX)) GO CREATE CLUSTERED INDEX [IX_TestTable] ON TestTable (ID) GO CREATE NONCLUSTERED INDEX [IX_TestTable_Cols] ON TestTable (FirstCol) INCLUDE (SecondCol) GO USE [tempdb] GO ALTER INDEX [IX_TestTable_Cols] ON [dbo].[TestTable] REBUILD WITH (ONLINE = ON) GO DROP TABLE TestTable GO Now run the same code in SQL Server 2012 version. Observe the difference between both of the execution. You will be get following resultset. In SQL Server 2008/R2 it will throw following error: Msg 2725, Level 16, State 2, Line 1 An online operation cannot be performed for index ‘IX_TestTable_Cols’ because the index contains column ‘SecondCol’ of data type text, ntext, image, varchar(max), nvarchar(max), varbinary(max), xml, or large CLR type. For a non-clustered index, the column could be an include column of the index. For a clustered index, the column could be any column of the table. If DROP_EXISTING is used, the column could be part of a new or old index. The operation must be performed offline. In SQL Server 2012 it will run successfully and will not throw any error. Command(s) completed successfully. I always thought it will throw an error if there is VARCHAR(MAX) or NVARCHAR(MAX) used in table schema definition. When I saw this result it was clear to me that it will be for sure not bug enhancement in SQL Server 2012. For matter for the fact, I always wanted this feature to be added in SQL Server Engine as this will enable ONLINE Index Rebuilding for mission critical tables which needs to be always online. I quickly searched online and landed on Jacob Sebastian’s blog where he has blogged about it as well. Well, is there any other new feature in SQL Server 2012 which gave you good surprise? Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Index, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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• View Your Google Calendar in Outlook 2010

  - by Mysticgeek

  Google Calendar is a great way to share appointments, and synchronize your schedule with others. Here we show you how to view your Google Calendar in Outlook 2010 too. Google Calendar Log into the Google Calendar and under My Calendars click on Settings. Now click on the calendar you want to view in Outlook. Scroll down the page and click on the ICAL button from the Private Address section, or Calendar Address if it’s a public calendar…then copy the address to your clipboard. Outlook 2010 Open up your Outlook calendar, click the Home tab on the Ribbon, and under Manage Calendars click on Open Calendar \ From Internet… Now enter the link location into the New Internet Calendar field then click OK. Click Yes to the dialog box that comes up verifying you want to subscribe to it.   If you want more subscription options click on the Advanced button. Here you can name the folder, type in a description, and choose if you want to download attachments. That is all there is to it! Now you will be able to view your Google Calendar in Outlook 2010. You’ll also be able to view your local computer and the Google Calendar side by side… Keep in mind that this only gives you the ability to view the Google Calendar…it’s read-only. Any changes you make on the Google Calendar site will show up when you do a send/receive. If live out of Outlook during the day, you might want the ability to view what is going on with your Google Calendar(s) as well. If you’re an Outlook 2007 user, check out our article on how to view your Google Calendar in Outlook 2007. Similar Articles Productive Geek Tips View Your Google Calendar in Outlook 2007Overlay Calendars in Outlook 2007 (like Google Calendar does)Sync Your Outlook and Google Calendar with Google Calendar SyncDisplay your Google Calendar in Windows CalendarEasily Add All Holidays To The Calendar in Outlook 2003 TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Xobni Plus for Outlook All My Movies 5.9 CloudBerry Online Backup 1.5 for Windows Home Server Snagit 10 Create More Bookmark Toolbars in Firefox Easily Filevo is a Cool File Hosting & Sharing Site Get a free copy of WinUtilities Pro 2010 World Cup Schedule Boot Snooze – Reboot and then Standby or Hibernate Customize Everything Related to Dates, Times, Currency and Measurement in Windows 7

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• Add an Opera Style Status Bar to Firefox

  - by Asian Angel

  Anyone who has used Opera will be familiar with the information presented for the webpage that is currently loading in the browser (i.e. number of images loaded). If you would like to have that same functionality in Firefox then join us as we look at the Extended Statusbar extension. Before Here is the default setup for Firefox…not a lot of information available to indicate exactly how much of the webpage has already loaded versus what has not. For some people this is enough but what if you like more details? Extended Statusbar in Action You may be curious about the information that the Extended Statusbar extension will provide. The information includes: Percentage of the webpage loaded The number of images loaded Bytes downloaded Average download speed The load time After emptying the cache we once again reloaded the HTG homepage. The default style/mode is “Classic Style” and the “webpage load information” will be displayed within your “Status Bar” as shown here. The information available after the webpage finished loading in “Classic Style”. If you prefer “Slim Mode” this is how your “Status Bar” should look afterwards…very condensed. For those preferring the “New Style” a temporary addition will appear above your regular “Status Bar” and disappear just a few seconds after the webpage has fully loaded (unless changed in the “Settings”). Settings The “Settings” are set up in two different ways. For those who prefer to use the “Classic Style & Slim Mode” these are the options available to you. If you prefer the “New Style” then you will have a whole different set of options available. Notice that you can exclude certain webpages and set a custom style if desired. Conclusion If you have been wanting to add Opera style webpage loading information to your “Status Bar” then you should definitely give this extension a try. Links Download the Extended Statusbar extension (Mozilla Add-ons) Similar Articles Productive Geek Tips Move the Progress Bar to the Tabs in FirefoxSet the Speed Dial as the Opera Startup PageAuto-Hide Your Cluttered Firefox Status Bar ItemsSimplify Text Copying & Pasting in Firefox with AutoCopyScan Files for Viruses Before You Download With Dr.Web TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 If it were only this easy SyncToy syncs Files and Folders across Computers on a Network (or partitions on the same drive) Classic Cinema Online offers 100’s of OnDemand Movies OutSync will Sync Photos of your Friends on Facebook and Outlook Windows 7 Easter Theme YoWindoW, a real time weather screensaver

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• MVC's Html.DropDownList and "There is no ViewData item of type 'IEnumerable<SelectListItem>' that has the key '...'

  - by pjohnson

  ASP.NET MVC's HtmlHelper extension methods take out a lot of the HTML-by-hand drudgery to which MVC re-introduced us former WebForms programmers. Another thing to which MVC re-introduced us is poor documentation, after the excellent documentation for most of the rest of ASP.NET and the .NET Framework which I now realize I'd taken for granted. I'd come to regard using HtmlHelper methods instead of writing HTML by hand as a best practice. When I upgraded a project from MVC 3 to MVC 4, several hidden fields with boolean values broke, because MVC 3 called ToString() on those values implicitly, and MVC 4 threw an exception until you called ToString() explicitly. Fields that used HtmlHelper weren't affected. I then went through dozens of views and manually replaced hidden inputs that had been coded by hand with Html.Hidden calls. So for a dropdown list I was rendering on the initial page as empty, then populating via JavaScript after an AJAX call, I tried to use a HtmlHelper method: @Html.DropDownList("myDropdown") which threw an exception: System.InvalidOperationException: There is no ViewData item of type 'IEnumerable<SelectListItem>' that has the key 'myDropdown'. That's funny--I made no indication I wanted to use ViewData. Why was it looking there? Just render an empty select list for me. When I populated the list with items, it worked, but I didn't want to do that: @Html.DropDownList("myDropdown", new List<SelectListItem>() { new SelectListItem() { Text = "", Value = "" } }) I removed this dummy item in JavaScript after the AJAX call, so this worked fine, but I shouldn't have to give it a list with a dummy item when what I really want is an empty select. A bit of research with JetBrains dotPeek (helpfully recommended by Scott Hanselman) revealed the problem. Html.DropDownList requires some sort of data to render or it throws an error. The documentation hints at this but doesn't make it very clear. Behind the scenes, it checks if you've provided the DropDownList method any data. If you haven't, it looks in ViewData. If it's not there, you get the exception above. In my case, the helper wasn't doing much for me anyway, so I reverted to writing the HTML by hand (I ain't scared), and amended my best practice: When an HTML control has an associated HtmlHelper method and you're populating that control with data on the initial view, use the HtmlHelper method instead of writing by hand.

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• Quickly Preview Songs in Windows Media Center 12 in Windows 7

  - by DigitalGeekery

  Do you ever wish you could quickly preview a song without having to play it? Today we look at a quick and easy way to do that in Windows Media Player 12. Open Windows Media Player in Library Mode and select your Music library. Hover your cursor over the Title of the song and a Preview pop-up window will appear after a few seconds.    Click on the Preview in the pop-up window and the song will begin to play. As the preview begins to play, you will see the Skip link and a song timer. Click on Skip to jump ahead 15 seconds in the song. When you are finished previewing the song, simply move your mouse away from the preview window to stop playback. Automatically Preview Songs You can adjust settings in Windows Media Player to automatically preview songs when you hover your cursor over the title. Select Tools  from the menu and click Options. On the Options window, select the Library tab and click on Automatically preview songs on title hover. Click OK.   Now when you simply hover your cursor over the song title the preview window will appear and playback will begin automatically. This feature works just as well in Details view as it does in Expanded Tile view. Would you like to stream your music to other computers on your network? Check out our article on how to stream media to other Windows 7 computers. Similar Articles Productive Geek Tips Using Netflix Watchnow in Windows Vista Media Center (Gmedia)Add Color Coding to Windows 7 Media Center Program GuideSchedule Updates for Windows Media CenterIntegrate Hulu Desktop and Windows Media Center in Windows 7Integrate Boxee with Media Center in Windows 7 TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 Follow Finder Finds You Twitter Users To Follow Combine MP3 Files Easily QuicklyCode Provides Cheatsheets & Other Programming Stuff Download Free MP3s from Amazon Awe inspiring, inter-galactic theme (Win 7) Case Study – How to Optimize Popular Wordpress Sites

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• The softer side of BPM

  - by [email protected]

  BPM and RTD are great complementary technologies that together provide a much higher benefit than each of them separately. BPM covers the need for automating processes, making sure that there is uniformity, that rules and regulations are complied with and that the process runs smoothly and quickly processes the units flowing through it. By nature, this automation and unification can lead to a stricter, less flexible process. To avoid this problem it is common to encounter process definition that include multiple conditional branches and human input to help direct processing in the direction that best applies to the current situation. This is where RTD comes into play. The selection of branches and conditions and the optimization of decisions is better left in the hands of a system that can measure the results of its decisions in a closed loop fashion and make decisions based on the empirical knowledge accumulated through observing the running of the process.When designing a business process there are key places in which it may be beneficial to introduce RTD decisions. These are:Thresholds - whenever a threshold is used to determine the processing of a unit, there may be an opportunity to make the threshold "softer" by introducing an RTD decision based on predicted results. For example an insurance company process may have a total claim threshold to initiate an investigation. Instead of having that threshold, RTD could be used to help determine what claims to investigate based on the likelihood they are fraudulent, cost of investigation and effect on processing time.Human decisions - sometimes a process will let the human participants make decisions of flow. For example, a call center process may leave the escalation decision to the agent. While this has flexibility, it may produce undesired results and asymetry in customer treatment that is not based on objective functions but subjective reasoning by the agent. Instead, an RTD decision may be introduced to recommend escalation or other kinds of treatments.Content Selection - a process may include the use of messaging with customers. The selection of the most appropriate message to the customer given the content can be optimized with RTD.A/B Testing - a process may have optional paths for which it is not clear what populations they work better for. Rather than making the arbitrary selection or selection by committee of the option deeped the best, RTD can be introduced to dynamically determine the best path for each unit.In summary, RTD can be used to make BPM based process automation more dynamic and adaptable to the different situations encountered in processing. Effectively making the automation softer, less rigid in its processing.

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• Devoxx 2011 Trip Report + Pictures

  - by arungupta

  3350 attendees from 40 countries lived in "paradise" for 5 days last week. This paradise had 170+ rock star speakers delivering 200+ hours of technical content in about 150 sessions. And it truly was a paradise with a clear differentiation from other Java conferences. There were several Oracle speakers at the paradise covering the entire gamut of Java platform. I delivered a Java EE 6 hands-on lab (new content), showcased Java EE 7 and GlassFish 4.0 early work at the keynote, and participated in a panel to talk about Contexts and Dependency Injection. The demo in the keynote showed how to deploy a Java EE application in a managed environment. The demo showed a Conference Planner application that can be used by conference organizers to display sessions, tracks, and speaker information. This same application can be deployed and display data from JavaOne 2011 or Devoxx 2011 based upon the SQL chosen for database initialization. If javaone-sf-2011.sql is chosen for datbase initialization then the application looks like as shown: If devoxx-2011.sql is chosen then the application looks like as shown: And of course, clicking on Tracks, Speakers, Sessions shows you information from the respective conference. The complete source code for the application and detailed instructions are availaable at glassfish.org/javaone2011. In short: Download the sample app and unzip Download GlassFish build b05. Download platform-specific Load Balancer template Run "bin/install.sh" to configure GlassFish Pick javaone-sf-2011.sql or devoxx-2011.sql for database initialization You can also watch the application in action in this video: A breaking news shared at the conference was that Devoxx France is coming from April 18- 20 and 75% of the talks will be in French. Stay tuned for more details on that. I'm sure Antonio and gang will put up a great show out there! Just a tip for the first timers to Devoxx ... A bus leaves from Brussels airport to Antwerp city center between 4am - 11pm at the top of every hour, takes about 45 minutes, and costs 10 euros (only cash). Take a tram #6 (going towards Luchtbal) from Astrid station (next to the city center) and get off at the last station for Metropolis. It takes about 15 minutes. Purchase a day pass at the station using kiosks (much cheaper) or you can buy in the bus as well (about double the price). Either way, cash only. Here are a few pictures captured from the event: And the complete album here: Thank you Stephan for giving me an opportunity to speak at my first Devoxx. I hope to be back next year, just in time for Java EE 7 going final!

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• Using SurfaceFormat.Single and HLSL for GPGPU with XNA

  - by giancarlo todone

  I'm trying to implement a so-called ping-pong technique in XNA; you basically have two RenderTarget2D A and B and at each iteration you use one as texture and the other as target - and vice versa - for a quad rendered through an HLSL pixel shader. step1: A--PS--B step2: B--PS--A step3: A--PS--B ... In my setup, both RenderTargets are SurfaceFormat.Single. In my .fx file, I have a tachnique to do the update, and another to render the "current buffer" to the screen. Before starting the "ping-pong", buffer A is filled with test data with SetData<float>(float[]) function: this seems to work properly, because if I render a quad on the screen through the "Draw" pixel shader, i do see the test data being correctly rendered. However, if i do update buffer B, something does not function proerly and the next rendering to screen will be all black. For debug purposes, i replaced the "Update" HLSL pixel shader with one that should simply copy buffer A into B (or B into A depending on which among "ping" and "pong" phases we are...). From some examples i found on the net, i see that in order to correctly fetch a float value from a texture sampler from HLSL code, i should only need to care for the red channel. So, basically the debug "Update" HLSL function is: float4 ComputePS(float2 inPos : TEXCOORD0) : COLOR0 { float v1 = tex2D(bufSampler, inPos.xy).r; return float4(v1,0,0,1); } which still doesn't work and results in a all-zeroes ouput. Here's the "Draw" function that seems to properly display initial data: float4 DrawPS(float2 inPos : TEXCOORD0) : COLOR0 { float v1 = tex2D(bufSampler, inPos.xy).r; return float4(v1,v1,v1,1); } Now: playing around with HLSL doesn't change anything, so maybe I'm missing something on the c# side of this, so here's the infamous Update() function: _effect.Parameters["bufTexture"].SetValue(buf[_currentBuf]); _graphicsDevice.SetRenderTarget(buf[1 - _currentBuf]); _graphicsDevice.Clear(Color.Black); // probably not needed since RenderTargetUsage is DiscardContents _effect.CurrentTechnique = _computeTechnique; _computeTechnique.Passes[0].Apply(); _quadRender.Render(); _graphicsDevice.SetRenderTarget(null); _currentBuf = 1 - _currentBuf; Any clue?

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• The Proper Use of the VM Role in Windows Azure

  - by BuckWoody

  At the Professional Developer’s Conference (PDC) in 2010 we announced an addition to the Computational Roles in Windows Azure, called the VM Role. This new feature allows a great deal of control over the applications you write, but some have confused it with our full infrastructure offering in Windows Hyper-V. There is a proper architecture pattern for both of them. Virtualization Virtualization is the process of taking all of the hardware of a physical computer and replicating it in software alone. This means that a single computer can “host” or run several “virtual” computers. These virtual computers can run anywhere - including at a vendor’s location. Some companies refer to this as Cloud Computing since the hardware is operated and maintained elsewhere. IaaS The more detailed definition of this type of computing is called Infrastructure as a Service (Iaas) since it removes the need for you to maintain hardware at your organization. The operating system, drivers, and all the other software required to run an application are still under your control and your responsibility to license, patch, and scale. Microsoft has an offering in this space called Hyper-V, that runs on the Windows operating system. Combined with a hardware hosting vendor and the System Center software to create and deploy Virtual Machines (a process referred to as provisioning), you can create a Cloud environment with full control over all aspects of the machine, including multiple operating systems if you like. Hosting machines and provisioning them at your own buildings is sometimes called a Private Cloud, and hosting them somewhere else is often called a Public Cloud. State-ful and Stateless Programming This paradigm does not create a new, scalable way of computing. It simply moves the hardware away. The reason is that when you limit the Cloud efforts to a Virtual Machine, you are in effect limiting the computing resources to what that single system can provide. This is because much of the software developed in this environment maintains “state” - and that requires a little explanation. “State-ful programming” means that all parts of the computing environment stay connected to each other throughout a compute cycle. The system expects the memory, CPU, storage and network to remain in the same state from the beginning of the process to the end. You can think of this as a telephone conversation - you expect that the other person picks up the phone, listens to you, and talks back all in a single unit of time. In “Stateless” computing the system is designed to allow the different parts of the code to run independently of each other. You can think of this like an e-mail exchange. You compose an e-mail from your system (it has the state when you’re doing that) and then you walk away for a bit to make some coffee. A few minutes later you click the “send” button (the network has the state) and you go to a meeting. The server receives the message and stores it on a mail program’s database (the mail server has the state now) and continues working on other mail. Finally, the other party logs on to their mail client and reads the mail (the other user has the state) and responds to it and so on. These events might be separated by milliseconds or even days, but the system continues to operate. The entire process doesn’t maintain the state, each component does. This is the exact concept behind coding for Windows Azure. The stateless programming model allows amazing rates of scale, since the message (think of the e-mail) can be broken apart by multiple programs and worked on in parallel (like when the e-mail goes to hundreds of users), and only the order of re-assembling the work is important to consider. For the exact same reason, if the system makes copies of those running programs as Windows Azure does, you have built-in redundancy and recovery. It’s just built into the design. The Difference Between Infrastructure Designs and Platform Designs When you simply take a physical server running software and virtualize it either privately or publicly, you haven’t done anything to allow the code to scale or have recovery. That all has to be handled by adding more code and more Virtual Machines that have a slight lag in maintaining the running state of the system. Add more machines and you get more lag, so the scale is limited. This is the primary limitation with IaaS. It’s also not as easy to deploy these VM’s, and more importantly, you’re often charged on a longer basis to remove them. your agility in IaaS is more limited. Windows Azure is a Platform - meaning that you get objects you can code against. The code you write runs on multiple nodes with multiple copies, and it all works because of the magic of Stateless programming. you don’t worry, or even care, about what is running underneath. It could be Windows (and it is in fact a type of Windows Server), Linux, or anything else - but that' isn’t what you want to manage, monitor, maintain or license. You don’t want to deploy an operating system - you want to deploy an application. You want your code to run, and you don’t care how it does that. Another benefit to PaaS is that you can ask for hundreds or thousands of new nodes of computing power - there’s no provisioning, it just happens. And you can stop using them quicker - and the base code for your application does not have to change to make this happen. Windows Azure Roles and Their Use If you need your code to have a user interface, in Visual Studio you add a Web Role to your project, and if the code needs to do work that doesn’t involve a user interface you can add a Worker Role. They are just containers that act a certain way. I’ll provide more detail on those later. Note: That’s a general description, so it’s not entirely accurate, but it’s accurate enough for this discussion. So now we’re back to that VM Role. Because of the name, some have mistakenly thought that you can take a Virtual Machine running, say Linux, and deploy it to Windows Azure using this Role. But you can’t. That’s not what it is designed for at all. If you do need that kind of deployment, you should look into Hyper-V and System Center to create the Private or Public Infrastructure as a Service. What the VM Role is actually designed to do is to allow you to have a great deal of control over the system where your code will run. Let’s take an example. You’ve heard about Windows Azure, and Platform programming. You’re convinced it’s the right way to code. But you have a lot of things you’ve written in another way at your company. Re-writing all of your code to take advantage of Windows Azure will take a long time. Or perhaps you have a certain version of Apache Web Server that you need for your code to work. In both cases, you think you can (or already have) code the the software to be “Stateless”, you just need more control over the place where the code runs. That’s the place where a VM Role makes sense. Recap Virtualizing servers alone has limitations of scale, availability and recovery. Microsoft’s offering in this area is Hyper-V and System Center, not the VM Role. The VM Role is still used for running Stateless code, just like the Web and Worker Roles, with the exception that it allows you more control over the environment of where that code runs.

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• Schedule Auto Send & Receive in Microsoft Outlook

  - by Mysticgeek

  If you use Outlook as your email client, you might want to schedule how often it checks for new messages. Today we show you how to schedule how often auto send/receive occurs. If you’re busy during the day and need to keep up with your emails, you might want want Outlook to check for new messages every few minutes. Here we’ll show how to schedule it in Office 2010, 2007, and 2003 for a busy inbox where you want to keep on top of your important emails. Outlook 2010 To schedule Auto Send/Receive in Outlook 2010, click on the File tab then Options. The Outlook Options window opens…click on Advanced and scroll down to Send and receive and click on the Send/Receive button. In the Send/Receive Groups window under Setting for group “All Accounts” check the box Schedule an automatic send/receive every…minutes. It is set to 30 minutes by default and you can change the minutes to whatever you want it to be. If you’re busy and want to keep up with your messages you can go as low as every one minute. You can also get to the Send/Receive groups by selecting Send/Receive tab on the Ribbon and then Define Send/Receive Groups. Outlook 2007 To select the send/receive time intervals in Outlook 2007, open Outlook and click on Tools \ Options. Click on the Mail Setup tab, check the box next to Send immediately when connected then the Send/Receive button.   Now change the schedule to automatically send/receive. You can also access the Send/Receive Groups section by going to Send/Receive > Send/Receive Settings and Define Send/Receive Groups. Outlook 2003 In Outlook 2003 click on Tool \ Options… Click on the Mail Setup tab then check Send immediately when connected, then the Send/receive button. Then set the amount of time between send/receive attempts. If you live out of Microsoft Outlook and want to keep up with messages, setting the automatic send/receive minutes will keep you up to date. Similar Articles Productive Geek Tips Force Outlook 2007 to Download Complete IMAP ItemsUse Hotmail from Microsoft OutlookClear the Auto-Complete Email Address Cache in OutlookIntegrate Twitter With Microsoft OutlookCreate an Email Template in Outlook 2003 TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips CloudBerry Online Backup 1.5 for Windows Home Server Snagit 10 VMware Workstation 7 Acronis Online Backup Windows Firewall with Advanced Security – How To Guides Sculptris 1.0, 3D Drawing app AceStock, a Tiny Desktop Quote Monitor Gmail Button Addon (Firefox) Hyperwords addon (Firefox) Backup Outlook 2010

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• OrbitFX: JavaFX 8 3D & NetBeans Platform in Space!

  - by Geertjan

  Here is a collection of screenshots from a proof of concept tool being developed by Nickolas Sabey and Sean Phillips from a.i. solutions. Before going further, read a great new article here written on java.net by Kevin Farnham, in light of the Duke's Choice Award (DCA) recently received at JavaOne 2013 by the a.i. solutions team. Here's Sean receiving the award on behalf of the a.i. solutions team, surrounded by the DCA selection committee and other officials: They won the DCA for helping facilitate and deploy the 2014 launch of NASA's Magnetospheric Multiscale mission, using JDK 7, the NetBeans Platform, and JavaFX to create the GEONS Ground Support System, helping reduce software development time by approximately 35%. The prototype tool that Nicklas and Sean are now working on uses JavaFX 3D with the NetBeans Platform and is nicknamed OrbitFX. Much of the early development is being done to experiment with different patterns, so that accuracy is currently not the goal. For example, you'll notice in the screenshots that the Earth is really close to the Sun, which is obviously not correct. The screenshots are generated using Java 8 build 111, together with NetBeans Platform 7.4. Inspired by various JavaOne demos using JavaFX 3D, Nick began development integrating them into their existing NetBeans Platform infrastructure. The 3D scene showing the Sun and Earth objects is all JavaFX 8 3D, demonstrating the use of Phong Material support, along with multiple light and camera objects. Each JavaFX component extends a JFXPanel type, so that each can easily be added to NetBeans Platform TopComponents. Right-clicking an item in the explorer view offers a context menu that animates and centers the 3D scene on the selected celestial body.  With each JavaFX scene component wrapped in a JFXPanel, they can easily be integrated into a NetBeans Platform Visual Library scene.  In this case, Nick and Sean are using an instance of their custom Slipstream PinGraphScene, which is an extension of the NetBeans Platform VMDGraphScene. Now, via the NetBeans Platform Visual Library, the OrbitFX celestial body viewer can be used in the same space as a WorldWind viewer, which is provided by a previously developed plugin. "This is a clear demonstration of the power of the NetBeans Platform as an application development framework," says Sean Phillips. "How else could you have so much rich application support placed literally side by side so easily?"

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• Addin Central Windows Home Server

  - by Mysticgeek

  If you’re a Windows Home Server user, you’ve probably come across a lot of cool addins that you can use to enhance its functionality. Today we take a look at Addin Central… which gives you easy access to the many addin possibilities out there. Addin Central from HomeServerLand is a free well…addin…that brings you information and easy access to several other addins that are available for your Windows Home Server. It essentially creates an “app store” of sorts for your Windows Home Server that you can view in the console. Install Addin Central Browse to your shared folders on the server and open the Add-Ins folder and copy the AddinCentral.msi installer (link below). Next open WHS Console from one of the computers connected to your network, and click Settings then Add-ins. Under Available Add-ins click the Available tab and you’ll see the Addin Central installer file we just copied over. Click the Install button. Installation kicks off and when it’s complete, you’ll need to close out of the console and reconnect. Using Addin Central When you reconnect to WHS Console, you’ll see Addin Central in the menu with a list of the newest updated addins. You can go through the list of addins and check out their rating, version, author, amount of downloads, and if they’re free or you need to purchase a license. You can sort through the addins by popularity, author, categories, or look at them all.   When you select an addin you can read more detail about it in the pane on the right side…from here you can go directly to the addin website as well. Hover over the thumbnail of the addin to get a larger screenshot of what it looks like. The toolbox gives you different options for controlling Addin Central, and notice you can easily search for addins too. In the Addin Central Toolbox you can change settings such as the startup view, showing tooltips, and more.   Conclusion If you’re a Windows Home Server user, you’ll definitely want to give Addin Central a go. It lets you easily find and download various addins for essentially anything you might want to use to customize your home server. HomeServerLand calls it “The Mother of All Addins” and for a good reason. Download Addin Central (registration required) Similar Articles Productive Geek Tips GMedia Blog: Setting Up a Windows Home ServerGet Extended Access to Windows Home Server with Advanced Admin ConsoleShare Ubuntu Home Directories using SambaInstalling Windows Home ServerAnother Blog You Should Subscribe To TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 Find Out the Celebrity You Resemble With FaceDouble Whoa ! Use Printflush to Solve Printing Problems Icelandic Volcano Webcams Open Multiple Links At One Go NachoFoto Searches Images in Real-time

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• How to Make Ubuntu Play MP3 Files

  - by Trevor Bekolay

  Because of licensing issues, Ubuntu is unable to play MP3s out of the box. We’ll show you how to play MP3s and other restricted file formats in about four mouse clicks. The philosophy behind Ubuntu is that software should be free and accessible to all. Whether MP3 and other file formats are free is unclear in many countries, so Ubuntu does not include software to read these file formats by default. Fortunately, it does include a package that installs the most commonly used file formats all at once, including a Flash plugin for Firefox. Note: These instructions are for Ubuntu 10.04. There are small differences for earlier versions of Ubuntu. Play MP3 Files Open the Ubuntu Software Center, found in the Applications menu.   Click on View and ensure that All Software is selected. Type “restricted extras” into the search box at the top-right. Find the Ubuntu restricted extras package and click Install. Enter your password when prompted. Once the install is complete, close out of Ubuntu Software Center, and you’ll be able to play MP3 files! To confirm this, we’ll open up Rhythmbox, found in the Sound & Video section of the Applications menu. Our test MP3 plays with no problems! Note: If Rhythmbox tells you that MP3 plugins are not installed, close Rhythmbox and reopen it. You should not have to install anything extra through Rhythmbox.   Despite this extra step, playing the most common audio and video file formats – including Flash videos on the internet – is simple. All the software comes installed, you just have to teach them how to read your files. Similar Articles Productive Geek Tips How to Play .OGM Video Files in Windows VistaView Hidden Files and Folders in Ubuntu File BrowserMake Ubuntu Automatically Save Changes to Your SessionInstalling PHP4 and Apache on UbuntuInstalling PHP5 and Apache on Ubuntu TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Xobni Plus for Outlook All My Movies 5.9 CloudBerry Online Backup 1.5 for Windows Home Server Snagit 10 How to Forecast Weather, without Gadgets Outlook Tools, one stop tweaking for any Outlook version Zoofs, find the most popular tweeted YouTube videos Video preview of new Windows Live Essentials 21 Cursor Packs for XP, Vista & 7 Map the Stars with Stellarium

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• Exadata support for ACFS (and thus, 10gR2) now available!

  - by Robert Freeman

  Really? Exadata, ACFS and 10gR2? If you work with Exadata you are probably aware that ACFS has not been supported - until now! ACFS is now supported on Exadata if you are running Grid Infrastructure version 12.1.0.2 or later. This new support is described in MOS note 1326938.1. Also Exadata support for ACFS is mentioned in MOS note 888828.1, which is the king of all Exadata notes on MOS. The upshot is that you can now run Oracle Database 10gR2 on Exadata using ACFS as the storage for the Oracle Database. Don’t Over React and just Throw Everything on ACFS!First, let’s be clear that ACFS is not an alternative for running your Exadata databases on ASM. If you are running any production or non-production performance sensitive Oracle databases on 11.2 or 12.1, then you should be running them on ASM disks that are associated with the storage cells. The use case for ACFS is generally limited to the following: Running any Oracle 10gR2 databases on Exadata. Running Oracle 11gR2 development or test databases that require rapid cloning, and that do not require the performance benefits of the Exadata storage cells. If you are running Oracle Database 12c and you need snapshot/clone kinds of capabilities, then you should be using Oracle MultiTennant and the features present in that option (remember though that MultiTennant is a licensed option). The Fine PrintThere are some requirements that you will need to meet If you are going to run ACFS on Exadata. These are: You have to use Oracle Linux You must use GI 12.1.0.2 or later If you wish to use HCC then you must apply the fix for bug 19136936 to your system. This bug, and it’s associated patch do not appear on MOS (as of the time that I wrote this) so you will need to open an SR and get support to provide the patch for you. The Best Use Case for ACFSEven though Oracle Database 10gR2 is at end of life, it remains in use in a large number of places. This has caused problems when choosing to implement Exadata as a consolidation platform, or when choosing it during a hardware refresh process. Now that ACFS is supported, Exadata has become even more flexible and affords customers greater flexibility when migrating to Exadata and Engineered Systems. While all of the features of Exadata might not be available to a 10.2.0.4 database, certainly just the improved processing capabilities of Exadata with its fast as heck infiniband network fabric, additional memory, reduced power requirements and a whole host of other features, justifies moving these databases to Exadata now. This will also make it easier to upgrade these databases when the time comes!

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• Mathematica Programming Language&ndash;An Introduction

  - by JoshReuben

  The Mathematica http://www.wolfram.com/mathematica/ programming model consists of a kernel computation engine (or grid of such engines) and a front-end of notebook instances that communicate with the kernel throughout a session. The programming model of Mathematica is incredibly rich & powerful – besides numeric calculations, it supports symbols (eg Pi, I, E) and control flow logic.   obviously I could use this as a simple calculator: 5 * 10 --> 50 but this language is much more than that!   for example, I could use control flow logic & setup a simple infinite loop: x=1; While [x>0, x=x,x+1] Different brackets have different purposes: square brackets for function arguments:  Cos[x] round brackets for grouping: (1+2)*3 curly brackets for lists: {1,2,3,4} The power of Mathematica (as opposed to say Matlab) is that it gives exact symbolic answers instead of a rounded numeric approximation (unless you request it):   Mathematica lets you define scoped variables (symbols): a=1; b=2; c=a+b --> 5 these variables can contain symbolic values – you can think of these as partially computed functions:   use Clear[x] or Remove[x] to zero or dereference a variable.   To compute a numerical approximation to n significant digits (default n=6), use N[x,n] or the //N prefix: Pi //N -->3.14159 N[Pi,50] --> 3.1415926535897932384626433832795028841971693993751 The kernel uses % to reference the lastcalculation result, %% the 2nd last, %%% the 3rd last etc –> clearer statements: eg instead of: Sqrt[Pi+Sqrt[Sqrt[Pi+Sqrt[Pi]]] do: Sqrt[Pi]; Sqrt[Pi+%]; Sqrt[Pi+%] The help system supports wildcards, so I can search for functions like so: ?Inv* Mathematica supports some very powerful programming constructs and a rich function library that allow you to do things that you would have to write allot of code for in a language like C++.   the Factor function – factorization: Factor[x^3 – 6*x^2 +11x – 6] --> (-3+x) (-2+x) (-1+x)   the Solve function – find the roots of an equation: Solve[x^3 – 2x + 1 == 0] -->   the Expand function – express (1+x)^10 in polynomial form: Expand[(1+x)^10] --> 1+10x+45x^2+120x^3+210x^4+252x^5+210x^6+120x^7+45x^8+10x^9+x^10 the Prime function – what is the 1000th prime? Prime[1000] -->7919 Mathematica also has some powerful graphics capabilities:   the Plot function – plot the graph of y=Sin x in a single period: Plot[Sin[x], {x,0,2*Pi}] you can also plot 3D surfaces of functions using Plot3D function

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