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• Dual monitors: one monitor starts blinking and after a while turns black

  - by Anand

  I am using dual monitors in Ubuntu 11 with classical interface (Not Unity). I am using two monitors. The system can detect and automatically configure the monitors correctly. The problem is that after some time, one monitor will start blinking and after a while it will turn black. Does any one know that it is the problem of my hardware or the problem of Ubuntu system? Thank you very much in advance for your help! Anand

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• 10 Excellent Icon Sets

  - by Jyoti

  Icons are really useful for web design, application interface and more. Everyone loves good looking icons. In this post you will find 10 fresh new icon packs that you can use for your project. Pixelpress Mixed Icons: Social Media Icons By Studio M6: Now Wooden App Icon: Onebit Icon Pack: Fresh Add On Icon Set: 3D Crystals Icon Pack: Twitter Bird Icon: Wooden RSS Icons: Ganto Vector Icons: Vedro Icon PNG And Vector Pack:

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• Installing device drivers as part of VS2008 setup application (3 replies)

  A colleague in another department has produced device drivers for some USB devices that I need to communicate with in my VS2008 .Net application, and I'm looking to simplify the installation experience for our users. Currently I just put the driver files onto the CD in a folder, and the Windows Add Hardware Wizard will usually take them through the process. What I would like to do though, is to in...

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• A Technique for Performing Cross-host Upgrades to FMW 11gR1

  - by reza.shafii

  The main tool used for the upgrade of iAS 10g mid-tier (data not stored in 10g meta-data repository schemas) environments to Fusion Middleware (FMW) 11gR1 is the FMW Upgrade Assistant (UA). This tool performs what we call an out-of-place upgrade which in a nut-shell means the following: Upgrade is performed by pointing the UA to a 10g source topology as well as an 11g destination topology. The destination topology must be created, using the standard FMW 11g installation and configuration process, prior to the execution of the UA. The UA carries over all of the required changes from the source environment to the destination. This approach has a number of advantages rooted in the fact that the source environment - which is presumably working well and serving its needs - is not disturbed during the upgrade process as the UA only performs read-only operations on it. The UA today can only perform such out-of-place upgrades when the source and destination topologies reside on the same machine. This can sometimes be an issue when the host on which the iAS 10g environment is installed is running at full capacity and installing new hardware for the purpose of the upgrade (in most cases what would be needed is extra memory) is completely infeasible. In such cases, upgrade across a different host is still possible by using the following technique: Backup your source environment and restore it on to a target machine. The backup and restore procedures for the iAS 10.1.2 components are described within this section of the release's Administration Guide. As described in the docs, the Oracle Application Server Backup and Recovery Tool provides capabilities for backing up the installation on one machine and restoring it on another which is exactly what you want to do for the purpose of cross host upgrade. Ensure that the restored environment on your target host is fully functional. Go through the upgrade steps on the target machine to perform the out-of-place upgrade using the UA. Although this process does add another big step to the overall upgrade process, it does make it possible to perform a cross-host upgrade to 11gR1 when necessary. The easiest approach would of course be to find a way of ensuring that the required hardware capacity for upgrade is available on the original 10g host. Using techniques such as scheduling the upgrade at low traffic times and/or temporarily stopping other processes running on the machine to clear up some memory might provide you the sufficient memory needed to perform the out-of-place upgrade and save you the need for using the backup/restore technique I have described in this post.

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• Set up grub2 on cloned Ubuntu installation

  - by ptikobj

  With an Ubuntu Live Disc, I have copied my Ubuntu 10.04 installation to a new harddisk (with the same hardware). However, it doesn't boot, since I think I still need to set up grub for this new installation. How do I set up grub2 for a copied Ubuntu installation? All the tutorials for grub2 didn't really help me... running update-grub on the "original" Ubuntu installation doesn't find the copied Ubuntu installation.

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• Oracle VM Templates for EBS 12.1.3 for Exalogic Now Available

  - by Elke Phelps (Oracle Development)

  Oracle VM Templates for Oracle E-Business Suite 12.1.3 for x86 Exalogic Platform (64 bit) are now available on the Oracle Software Delivery Cloud.  The templates contain all the required elements to create an Oracle E-Business Suite R12 demonstration system on an Exalogic server. You can use these templates to quickly build an EBS 12.1.3 demonstration environment, bypassing the operating system and the software install (via the EBS Rapid Install).   The Oracle E-Business Suite Release 12.1.3 (64 bit) template for the Exalogic platform is a Oracle Virtual Server Guest template that contains a complete Oracle E-Business Suite Release 12.1.3 Database Tier and Application Tier Installation.  For additional details, please refer to the following My Oracle Support Note: Oracle E-Business Suite Release 12.1.3 Database Tier and Application Tier Template for Oracle Exalogic Platform (Note 1499132.1) The Oracle E-Business Suite system is installed on top of Oracle Linux Version 5 update 6. The templates have been optimized for performance, including OS kernel settings and E-Business Suite configuration settings tuned specifically for the Exalogic platform.  The configuration delivered with this template for a mid-tier running on Exalogic will support hundreds of concurrent users.  Please refer to Section 2: Performance Analysis in My Oracle Support Note 1499132.1 for additional details.   Additional Information The Oracle E-Business Suite VM templates for the Exalogic platform contain the following software versions: Operating System: Oracle Linux Version 5 Update 6 Oracle E-Business Suite 12.1.3 (Database Tier) Oracle E-Business Suite 12.1.3 (Application Tier) The following considerations were made when the Oracle E-Business Suite VM template for the Exalogic platform were designed: Templates use the hardware-virtualized architecture, supporting hardware with virtualization feature. Database Tier Template is configured to use the following configuration: 16 GB RAM 4 VCPUs 250 GB of Disk space for application installation Application Tier Template is configured to use the following configuration: 16 GB RAM 4 VCPUs 50 GB of Disk space for application installation References Oracle E-Business Suite Release 12.1.3 Database Tier and Application Tier Template for Oracle Exalogic Platform (Note 1499132.1) Related Articles Part 1: E-Business Suite 12.1.1 Templates for Oracle VM Now Available Part 2: Using Oracle VM with Oracle E-Business Suite Virtualization Kit Part 3: On Clouds and Virtualization in EBS Environments (OpenWorld 2009 Recap) Part 4: Deploying E-Business Suite on Amazon Web Services Elastic Compute Cloud Part 5: Live Migration of EBS Services Using Oracle VM Support Policies for Virtualization Technologies and Oracle E-Business Suite Virtualization and the E-Business Suite, Redux Virtualization and E-Business Suite

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• Simple Netduino Go Tutorial Flashing RGB LEDs with a potentiometer

  - by Chris Hammond

  In case you missed the announcement on 4/4, the guys and Secret Labs, along with other members of the Netduino Community have come out with a new platform called Netduino Go . Head on over www.netduino.com for the introduction forum post . This post is how to quickly get up and running with your Netduino Go, based on Chris Walker’s getting started forum post , with some enhancements that I think will make it easier to get up and running, as Chris’ post unfortunately leaves a few things out. Hardware...(read more)

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• no volume in kubuntu 10.04

  - by neha

  hello,I am having both gnome and kde on my system.as my gnome is working perfectly but in KDE is there is no sound being generated. output of apley -l and lspci commands is as follows.. neha@neha-laptop:~$ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: Intel [HDA Intel], device 3: INTEL HDMI [INTEL HDMI] Subdevices: 1/1 Subdevice #0: subdevice #0 and output of lspci command is: neha@neha-laptop:~$ lspci 00:00.0 Host bridge: Intel Corporation Mobile PM965/GM965/GL960 Memory Controller Hub (rev 0c) 00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (rev 0c) 00:02.1 Display controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (rev 0c) 00:1a.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #4 (rev 02) 00:1a.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #5 (rev 02) 00:1a.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #2 (rev 02) 00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 02) 00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1 (rev 02) 00:1c.1 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 2 (rev 02) 00:1c.4 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 5 (rev 02) 00:1d.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #1 (rev 02) 00:1d.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #2 (rev 02) 00:1d.2 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #3 (rev 02) 00:1d.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #1 (rev 02) 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev f2) 00:1f.0 ISA bridge: Intel Corporation 82801HEM (ICH8M) LPC Interface Controller (rev 02) 00:1f.1 IDE interface: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) IDE Controller (rev 02) 00:1f.2 SATA controller: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) SATA AHCI Controller (rev 02) 00:1f.3 SMBus: Intel Corporation 82801H (ICH8 Family) SMBus Controller (rev 02) 02:09.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 05) 02:09.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 22) 02:09.2 System peripheral: Ricoh Co Ltd R5C843 MMC Host Controller (rev 12) 02:09.3 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev 12) 02:09.4 System peripheral: Ricoh Co Ltd xD-Picture Card Controller (rev ff) 09:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8040 PCI-E Fast Ethernet Controller (rev 12) 0b:00.0 Network controller: Broadcom Corporation BCM4312 802.11a/b/g (rev 01) can anyone help me??

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• WebLogic 12c hands-on bootcamps for partners – free of charge

  - by JuergenKress

  For all WebLogic Partner Community members we offer our WebLogic 12c hands-on Bootcamps – free of charge! If you want to become an Application Grid Specialized: Register Here! Country Date Location Registration Germany 3-5 April 2012 Oracle Düsseldorf Click here France 24-26 April 2012 Oracle Colombes Click here Spain 08-10 May 2012 Oracle Madrid Click here Netherlands 22-24 May 2012 Oracle Amsterdam Click here United Kingdom 06-08 June 2012 Oracle Reading Click here Italy 19-21 June 2012 Oracle Cinisello Balsamo Click here Portugal 10-12 July 2012 Oracle Lisbon Click here Skill requirements Attendees need to have the following skills as this is required by the product-set and to make sure they get the most out of the training: Basic knowledge in Java and JavaEE Understanding the Application Server concept Basic knowledge in older releases of WebLogic Server would be beneficial Member of WebLogic Partner Community for registration please vist http://www.oracle.com/partners/goto/wls-emea Hardware requirements Every participant works on his own notebook. The minimal hardware requirements are: 4Gb physical RAM (we will boot the image with 2Gb RAM) dual core CPU 15 GB HD Software requirements Please install Oracle VM VirtualBox 4.1.8 Follow-up and certification With the workshop registration you agree to the following next steps Follow-up training attend and pass the Oracle Application Grid Certified Implementation Specialist Registration For details and registration please visit Register Here Free WebLogic Certification (Free assessment voucher to become certified) For all WebLogic experts, we offer free vouchers worth $195 for the Oracle Application Grid Certified Implementation Specialist assessment. To demonstrate your WebLogic knowledge you first have to pass the free online assessment Oracle Application Grid PreSales Specialist. For free vouchers, please send an e-mail with the screenshot of your Oracle Application Grid PreSales certirficate to [email protected] including your Name, Company, E-mail and Country. Note: This offer is limited to partners from Europe Middle East and Africa. Partners from other countries please contact your Oracle partner manager. WebLogic Specialization To become specialized in Application Grid, please make sure that you access the: Application Grid Specialization Guide Application Grid Specialization Checklist If you have any questions please contact the Oracle Partner Business Center. WebLogic Partner Community For regular information become a member in the WebLogic Partner Community please visit: http://www.oracle.com/partners/goto/wls-emea ( OPN account required). If you need support with your account please contact the Oracle Partner Business Center. Blog Twitter LinkedIn Mix Forum Wiki Technorati Tags: WebLogic training,Java training,WebLogic 12c,WebLogic Community,OPN,WebLogic,Oracle,WebLogic Certification,Apps Grid Certification,Implementation Specialist,Apps Grid Specialist,Oracle education

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• Monitor Review: Lenovo ThinkVision L2251x

  IT hardware doesn't get much greener than this -- Lenovo's deluxe LCD monitor draws fewer watts (21) than its screen size in inches (22), and is smart enough to turn its power down when you're away from your desk.

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• Monitor Review: Lenovo ThinkVision L2251x

  IT hardware doesn't get much greener than this -- Lenovo's deluxe LCD monitor draws fewer watts (21) than its screen size in inches (22), and is smart enough to turn its power down when you're away from your desk.

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• What are some useful things you can do with Mvc Modelbinders?

  - by George Mauer

  It occurs to me that the ModelBinder mechanism in ASP MVC public interface IModelBinder { object BindModel(System.Web.Mvc.ControllerContext controllerContext, System.Web.Mvc.ModelBindingContext bindingContext); } Is insanely powerful. What are some cool uses of this mechanism that you've done/seen? I guess since the concept is similar in other frameworks there's no reason to limit it to Asp Mvc

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• ath9k driver does not weak up

  - by shantanu

  I know this is common question but i found no suitable answer, so i am asking this again. I installed ubuntu 11.10. I found the bug for ath9k, so set first network boot from BIOS menu. That's worked. I have upgraded to 12.04 yesterday. Now ath9k is creating problem again. First network boot is still enable. ath9k works at start. But failed(connect again and again) after couple of minutes. dmesg show error that it can not weak up in 500us. So i tried #compat-wireless-3.5.1-1. But result is same. I have also added #nohwcrypt=1 option in /etc/modeprob.d/ath9k.conf. Still no luck. I tried #rmmod and then modprobe sudo modprobe ath9k nohwcrypt=1 dmesg shows me error: [ 400.690086] ath9k: Driver unloaded [ 406.214329] ath9k 0000:06:00.0: enabling device (0000 -> 0002) [ 406.214348] ath9k 0000:06:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17 [ 406.214368] ath9k 0000:06:00.0: setting latency timer to 64 [ 406.428517] ath9k 0000:06:00.0: Failed to initialize device [ 406.428852] ath9k 0000:06:00.0: PCI INT A disabled [ 406.428887] ath9k: probe of 0000:06:00.0 failed with error -5 dmesg error when driver fail: 355.023521] ath: Chip reset failed [ 355.023524] ath: Unable to reset channel, reset status -22 [ 355.023556] ath: Unable to set channel [ 355.088569] ath: Failed to stop TX DMA, queues=0x10f! [ 355.122708] ath: DMA failed to stop in 10 ms AR_CR=0xffffffff AR_DIAG_SW=0xffffffff DMADBG_7=0xffffffff [ 355.122714] ath: Could not stop RX, we could be confusing the DMA engine when we start RX up [ 355.263962] ath: Chip reset failed [ 355.263966] ath: Unable to reset channel (2437 MHz), reset status -22 [ 358.996063] ath: Failed to wakeup in 500us [ 364.004182] ath: Failed to wakeup in 500us I can not install fresh ubuntu because i have lots of application installed. System : Acer Aspire 4250 AMD dual core 1.6GHZ Atheros Communications Inc. AR9485 Wireless Network Adapter (rev 01) EDITED Now i am in serious problem. No wifi device is not showing in ifconfig or lshw commands. Only ether-net interface shows. I tried (FN + WIFI) several times to enable the device but nothing helps. Now I have installed fresh ubuntu 12.04. Please help lshw -c network: *-network description: Ethernet interface product: 82566DC Gigabit Network Connection vendor: Intel Corporation physical id: 19 bus info: pci@0000:00:19.0 logical name: eth0 version: 02 serial: 00:19:d1:7a:8e:f9 size: 100Mbit/s capacity: 1Gbit/s width: 32 bits clock: 33MHz capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=2.0.0-k duplex=full firmware=1.1-0 ip=192.168.1.114 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s resources: irq:45 memory:90300000-9031ffff memory:90324000-90324fff ioport:20c0(size=32) rfkill command does not show anything but no error.

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• Mount external hdd in fluxbox ubuntu -12.04 commandline install

  - by jeroen

  I did the following: Install command line interface with ubuntu alternate install 12.04 in vmwareplayer5(9.2.2) After the base system was installed: sudo apt-get update, upgrade and dist-upgrade, sudo apt-get install xinit xorg fluxbox build-essential lxterminal gksu leafpad pcmanfm mc chromium-browser, this works. I also installed vmwaretools. My problem is being unable to mount any usb hdd or thumb drives. I'm new at building fluxbox so any help would be much appreciated!

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• after new install 12.04 black screen with blinking cursor

  - by gregor

  I installed 12.04 and I got after boot black screen.Next I started in filesafe mode but filesafeX (all options)do not work(black screen.Then I started root shell , remounted rw HD and on prompt built xorg.conf with: $X -configure I have edited xorg.conf to delete obsolete monitors and screens. After reboot I get black screen with blinking cursor (no terminals) what can I do? how to edit xorg.conf when this could be a problem?## Heading ## hardware:radeon hd5470 and i3 with i915

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• How To Get The Most Out Of Ubuntu Netbook Edition

  <b>Web Upd8: </b>"Note that the GNOME panel is locked in Ubuntu Netbook Edition 10.04 so you need to unlock it. As far as I know, this will only work if you installed Ubuntu Netbook Edition, not if you installed Ubuntu desktop and then installed the netbook interface."

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• Has Little Endian won?

  - by espertus

  When teaching recently about the Big vs. Little Endian battle, a student asked whether it had been settled, and I realized I didn't know. Looking at the Wikipedia article, it seems that the most popular current OS/architecture pairs use Little Endian but that Internet Protocol specifies Big Endian for transferring numeric values in packet headers. Would that be a good summary of the current status? Do current network cards or CPUs provide hardware support for switching byte order?

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• PASS 13 Dispatches: moving to the cloud

  - by Tony Davis

  PASS Summit 13, Day 1 keynote by Quentin Clarke and we're hearing about “redefiniing mission critical in the cloud”. With a move to the Windows Azure cloud comes the promise of capacity on demand, automatic HA, backups, patching and so on, as well as passing responsibility to MS for managing hardware, upgrades and so on. However, for many databases and applications the best route to the cloud is not necessarily obvious. For most, the path of least resistance is IaaS – SQL Server in a Azure VM. It removes the hardware burden but you still have to manage your databases and implementing HA for SQL Server is your responsibility. Also, scaling up comes at quite a cost – the biggest VM (8 CPU cores, 56 GB RAM, 16 1TB drives with 500 IOPS each) weighs in at over over $4500 per month. With PaaS, in the form of Windows SQL Database, you get a “3-copies replica set” so HA comes out-of the box, and removes the majority of the administration burden, but you are moving your database into a very different environment. For a start, it's a shared environment, with other customers using the same compute nodes in the cluster, and potentially even sharing the same database (multi-tenancy). Unless you pay for SQL DB Premium edition, the resources available for your workload will depends on how nicely others “play” in the shared environment. You'll potentially need to do a lot of tuning, and application rewriting to avoid throttling issues, optimising application-database communication to deal with increased latency between the two, and so on. You'll need aggressive application caching. You'll also need retry logic and to deal with (expected) node failure and the need to reconnect. In Tuesday's PASS Summit pre-con from the SQLCAT team, they spent a lot of time covering some of the telemetric techniques (collect into Azure storage the necessary monitoring data) to perform capacity planning, work out the hotspots and bottlenecks in your cloud applications. Tools like WAD (Windows Azure Diagnostics), performance counters SQL Database DMVs, and others, will be essential. Of course, to truly exploit the vast horizontal scaling that is available from the existence of thousands of compute nodes, you'll also need to need to consider how to “shard” your data so Azure can move it between nodes at will. Finding the right path to the Cloud isn't easy, but it's coming. I spoke to people one year ago who saw no real benefit in trying to move their infrastructure and databases to the cloud, but now at their company, it's the conversation that won't go away. Tony.  

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• DHCP server with multiple interfaces on ubuntu, destroys default gateway

  - by Henrik Alstad

  I use Ubuntu, and I have many interfaces. eth0, which is my internet connection, and it gets its info from a DHCP-server totally outisde of my control. I then have eth1,eth2,eth3 and eth4 which I have created a DHCP-server for.(ISC DHCP-Server) It seems to work, and I even get an IP-address from the foreign DHCP-server on the internet facing interface. However, for some reason it seems my gateway for eth0 became screwed after I installed my local DHCP-server for eth1-eth4. (I think so because I got an IP for eth0, and I can ping other stuff on the local network, but I cannot get access to the internet). My eth0-specific info in /etc/network/interfaces: auto lo iface lo inet loopback auto eth0 iface eth0 inet dhcp auto eth1 iface eth1 inet static address 10.0.1.1 netmask 255.255.255.0 network 10.0.1.0 broadcast 10.0.1.255 gateway 10.0.1.1 mtu 8192 auto eth2 iface eth2 inet static address 10.0.2.1 netmask 255.255.255.0 network 10.0.2.0 broadcast 10.0.2.255 gateway 10.0.2.1 mtu 8192 My /etc/default/isc-dhcp-server: INTERFACES="eth1 eth2 eth3 eth4" So why does my local DHCP-server fuck up the gateway for eth0, when I tell it not to listen to eth0? Anyone see the problem or what I can do to fix it? The problem seems indeed to be the gateways. "netstat -nr" gives: 0.0.0.0 --- 10.X.X.X ---- 0.0.0.0 --- UG 0 0 0 eth3 It should have been 0.0.0.0 129.2XX.X.X 0.0.0.0 UG 0 0 0 eth0 So for some reason, my local DHCP-server overrides the gateway I get from the network DHCP. Edit: dhcp.conf looks like this(I included info only for eth1 subnet): ddns-update-style none; not authoritative; subnet 10.0.1.0 netmask 255.255.255.0 { interface eth1; option domain-name "example.org"; option domain-name-servers ns1.example.org, ns2.example.org; default-lease-time 600; max-lease-time 7200; range 10.0.1.10 10.0.1.100; host camera1_1 { hardware ethernet 00:30:53:11:24:6E; fixed-address 10.0.1.10; } host camera2_1 { hardware ethernet 00:30:53:10:16:70; fixed-address 10.0.1.11; } } Also, it seems that the gateway is correctly set if I run "/etc/init.d/networking restart" in a terminal, but that's not helpful for me, I need the correct gateway to be set during startup, and i'd rather find the source of the problem

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• Codendi 4.2 : le gestionnaire de cycle de vie des logiciels disponible en version finale et gratuitement pour sa licence Community

  Codendi 4.2 : le gestionnaire de cycle de vie des logiciels disponible en version finale Et gratuitement pour sa licence Community Mise à jour du 15/10/2010 par Idelways Codendi vient d'annoncer sur son blog la disponibilité en version finale et stable de la version 4.2 de son gestionnaire de cycle de vie des logiciels. Disponible depuis Juin en version bêta et depuis octobre en Release Candidate (lire ci-avant), cette version embarque un gestionnaire des suivie (tracker) refondu, offrant une interface plus intuitive et une gestion du flux de travail plus efficace. Parmi les autres nouveautés, un plugin po...

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• U Central Florida Streamlines Administrative Apps

  - by jay.richey

  The University of Central Florida is wrapping up a multi-year implementation of new enterprise applications that includes a combination of Oracle software and Sun hardware to streamline its administrative processes and help manage student growth. The Orlando-based university currently has more than 56,000 students, making it the second largest American university by enrollment, behind only Arizona State University, which has more than 70,400 students. Read more...

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• Intel's Nehalem-EX Targets Mainframe, RISC Systems

  <b>Hardware Central:</b> "Intel is targeting the mainframe and RISC systems market with its new Xeon 6500/7500 lines of server processors that offer many features normally reserved for those high end systems."

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• SQL SERVER – Core Concepts – Elasticity, Scalability and ACID Properties – Exploring NuoDB an Elastically Scalable Database System

  - by pinaldave

  I have been recently exploring Elasticity and Scalability attributes of databases. You can see that in my earlier blog posts about NuoDB where I wanted to look at Elasticity and Scalability concepts. The concepts are very interesting, and intriguing as well. I have discussed these concepts with my friend Joyti M and together we have come up with this interesting read. The goal of this article is to answer following simple questions What is Elasticity? What is Scalability? How ACID properties vary from NOSQL Concepts? What are the prevailing problems in the current database system architectures? Why is NuoDB  an innovative and welcome change in database paradigm? Elasticity This word’s original form is used in many different ways and honestly it does do a decent job in holding things together over the years as a person grows and contracts. Within the tech world, and specifically related to software systems (database, application servers), it has come to mean a few things - allow stretching of resources without reaching the breaking point (on demand). What are resources in this context? Resources are the usual suspects – RAM/CPU/IO/Bandwidth in the form of a container (a process or bunch of processes combined as modules). When it is about increasing resources the simplest idea which comes to mind is the addition of another container. Another container means adding a brand new physical node. When it is about adding a new node there are two questions which comes to mind. 1) Can we add another node to our software system? 2) If yes, does adding new node cause downtime for the system? Let us assume we have added new node, let us see what the new needs of the system are when a new node is added. Balancing incoming requests to multiple nodes Synchronization of a shared state across multiple nodes Identification of “downstate” and resolution action to bring it to “upstate” Well, adding a new node has its advantages as well. Here are few of the positive points Throughput can increase nearly horizontally across the node throughout the system Response times of application will increase as in-between layer interactions will be improved Now, Let us put the above concepts in the perspective of a Database. When we mention the term “running out of resources” or “application is bound to resources” the resources can be CPU, Memory or Bandwidth. The regular approach to “gain scalability” in the database is to look around for bottlenecks and increase the bottlenecked resource. When we have memory as a bottleneck we look at the data buffers, locks, query plans or indexes. After a point even this is not enough as there needs to be an efficient way of managing such large workload on a “single machine” across memory and CPU bound (right kind of scheduling)  workload. We next move on to either read/write separation of the workload or functionality-based sharing so that we still have control of the individual. But this requires lots of planning and change in client systems in terms of knowing where to go/update/read and for reporting applications to “aggregate the data” in an intelligent way. What we ideally need is an intelligent layer which allows us to do these things without us getting into managing, monitoring and distributing the workload. Scalability In the context of database/applications, scalability means three main things Ability to handle normal loads without pressure E.g. X users at the Y utilization of resources (CPU, Memory, Bandwidth) on the Z kind of hardware (4 processor, 32 GB machine with 15000 RPM SATA drives and 1 GHz Network switch) with T throughput Ability to scale up to expected peak load which is greater than normal load with acceptable response times Ability to provide acceptable response times across the system E.g. Response time in S milliseconds (or agreed upon unit of measure) – 90% of the time The Issue – Need of Scale In normal cases one can plan for the load testing to test out normal, peak, and stress scenarios to ensure specific hardware meets the needs. With help from Hardware and Software partners and best practices, bottlenecks can be identified and requisite resources added to the system. Unfortunately this vertical scale is expensive and difficult to achieve and most of the operational people need the ability to scale horizontally. This helps in getting better throughput as there are physical limits in terms of adding resources (Memory, CPU, Bandwidth and Storage) indefinitely. Today we have different options to achieve scalability: Read & Write Separation The idea here is to do actual writes to one store and configure slaves receiving the latest data with acceptable delays. Slaves can be used for balancing out reads. We can also explore functional separation or sharing as well. We can separate data operations by a specific identifier (e.g. region, year, month) and consolidate it for reporting purposes. For functional separation the major disadvantage is when schema changes or workload pattern changes. As the requirement grows one still needs to deal with scale need in manual ways by providing an abstraction in the middle tier code. Using NOSQL solutions The idea is to flatten out the structures in general to keep all values which are retrieved together at the same store and provide flexible schema. The issue with the stores is that they are compromising on mostly consistency (no ACID guarantees) and one has to use NON-SQL dialect to work with the store. The other major issue is about education with NOSQL solutions. Would one really want to make these compromises on the ability to connect and retrieve in simple SQL manner and learn other skill sets? Or for that matter give up on ACID guarantee and start dealing with consistency issues? Hybrid Deployment – Mac, Linux, Cloud, and Windows One of the challenges today that we see across On-premise vs Cloud infrastructure is a difference in abilities. Take for example SQL Azure – it is wonderful in its concepts of throttling (as it is shared deployment) of resources and ability to scale using federation. However, the same abilities are not available on premise. This is not a mistake, mind you – but a compromise of the sweet spot of workloads, customer requirements and operational SLAs which can be supported by the team. In today’s world it is imperative that databases are available across operating systems – which are a commodity and used by developers of all hues. An Ideal Database Ability List A system which allows a linear scale of the system (increase in throughput with reasonable response time) with the addition of resources A system which does not compromise on the ACID guarantees and require developers to learn new paradigms A system which does not force fit a new way interacting with database by learning Non-SQL dialect A system which does not force fit its mechanisms for providing availability across its various modules. Well NuoDB is the first database which has all of the above abilities and much more. In future articles I will cover my hands-on experience with it. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology Tagged: NuoDB

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• La programmation mobile pour SmartPhones Android par Olivier LE GOAER

  Bonjour, Hephaistos007 vous propose un support de cours concernant la Programmation mobile pour SmartPhones Android. Les pré-requis pour ce cours sont indiqués dans les toutes premières diapos. Au programme de ce support de cours :Avant-propos Développer une WebApp [avec jQuery Mobile] Développer une MobileApp [sous Android] Construction d'une application Android Interface graphique utilisateur (GUI) Persistence et threading Exploiter les dispositifs matériel Divers Tests et déploiement Le lien du supports de cours est le suivant :

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• Mobile Linux Gets Support From Chip Vendors

  <b>Hardware Central:</b> "The development of Linux on mobile devices may be poised to get a boost thanks to the formation of a new industry group called Linaro, backed by a consortium of chip vendors including ARM, Freescale, Texas Instruments, Samsung and ST-Ericsson."

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