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Articles indexed Thursday June 21 2012

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  • PHP 5 will not work in Centos 6 for me

    - by LaserBeak
    Just created a new install of Centos 6.0 64-bit on a virtual machine and running on Vmware workstation 8, windows host. yum install php service httpd restart And when trying to run a html file from the var\www\html dir which just has <?php phpinfo(); ?> in it or pointing browser to localhost. Nothing comes up. Also opened up httpd.conf and added: AddType application/x-httpd-php .php AddType application/x-httpd-php-source .phps Tried reinstalling, installing php-common, then php etc. to no avail. Otherwise going for the typical LAMP. installed: php.x86_64 5.3.2-6.el6_0.1 @updates php-cli.x86_64 5.3.2-6.el6_0.1 @updates php-common.x86_64 5.3.2-6.el6_0.1 @updates Yet to update to Centos 6.1 PHP5 is probably comes installed by default with Centos and I maybe stuffed it up by running yum install php?

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  • Troubleshooting latency spikes on ESXi NFS datastores

    - by exo_cw
    I'm experiencing fsync latencies of around five seconds on NFS datastores in ESXi, triggered by certain VMs. I suspect this might be caused by VMs using NCQ/TCQ, as this does not happen with virtual IDE drives. This can be reproduced using fsync-tester (by Ted Ts'o) and ioping. For example using a Grml live system with a 8GB disk: Linux 2.6.33-grml64: root@dynip211 /mnt/sda # ./fsync-tester fsync time: 5.0391 fsync time: 5.0438 fsync time: 5.0300 fsync time: 0.0231 fsync time: 0.0243 fsync time: 5.0382 fsync time: 5.0400 [... goes on like this ...] That is 5 seconds, not milliseconds. This is even creating IO-latencies on a different VM running on the same host and datastore: root@grml /mnt/sda/ioping-0.5 # ./ioping -i 0.3 -p 20 . 4096 bytes from . (reiserfs /dev/sda): request=1 time=7.2 ms 4096 bytes from . (reiserfs /dev/sda): request=2 time=0.9 ms 4096 bytes from . (reiserfs /dev/sda): request=3 time=0.9 ms 4096 bytes from . (reiserfs /dev/sda): request=4 time=0.9 ms 4096 bytes from . (reiserfs /dev/sda): request=5 time=4809.0 ms 4096 bytes from . (reiserfs /dev/sda): request=6 time=1.0 ms 4096 bytes from . (reiserfs /dev/sda): request=7 time=1.2 ms 4096 bytes from . (reiserfs /dev/sda): request=8 time=1.1 ms 4096 bytes from . (reiserfs /dev/sda): request=9 time=1.3 ms 4096 bytes from . (reiserfs /dev/sda): request=10 time=1.2 ms 4096 bytes from . (reiserfs /dev/sda): request=11 time=1.0 ms 4096 bytes from . (reiserfs /dev/sda): request=12 time=4950.0 ms When I move the first VM to local storage it looks perfectly normal: root@dynip211 /mnt/sda # ./fsync-tester fsync time: 0.0191 fsync time: 0.0201 fsync time: 0.0203 fsync time: 0.0206 fsync time: 0.0192 fsync time: 0.0231 fsync time: 0.0201 [... tried that for one hour: no spike ...] Things I've tried that made no difference: Tested several ESXi Builds: 381591, 348481, 260247 Tested on different hardware, different Intel and AMD boxes Tested with different NFS servers, all show the same behavior: OpenIndiana b147 (ZFS sync always or disabled: no difference) OpenIndiana b148 (ZFS sync always or disabled: no difference) Linux 2.6.32 (sync or async: no difference) It makes no difference if the NFS server is on the same machine (as a virtual storage appliance) or on a different host Guest OS tested, showing problems: Windows 7 64 Bit (using CrystalDiskMark, latency spikes happen mostly during preparing phase) Linux 2.6.32 (fsync-tester + ioping) Linux 2.6.38 (fsync-tester + ioping) I could not reproduce this problem on Linux 2.6.18 VMs. Another workaround is to use virtual IDE disks (vs SCSI/SAS), but that is limiting performance and the number of drives per VM. Update 2011-06-30: The latency spikes seem to happen more often if the application writes in multiple small blocks before fsync. For example fsync-tester does this (strace output): pwrite(3, "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"..., 1048576, 0) = 1048576 fsync(3) = 0 ioping does this while preparing the file: [lots of pwrites] pwrite(3, "********************************"..., 4096, 1036288) = 4096 pwrite(3, "********************************"..., 4096, 1040384) = 4096 pwrite(3, "********************************"..., 4096, 1044480) = 4096 fsync(3) = 0 The setup phase of ioping almost always hangs, while fsync-tester sometimes works fine. Is someone capable of updating fsync-tester to write multiple small blocks? My C skills suck ;) Update 2011-07-02: This problem does not occur with iSCSI. I tried this with the OpenIndiana COMSTAR iSCSI server. But iSCSI does not give you easy access to the VMDK files so you can move them between hosts with snapshots and rsync. Update 2011-07-06: This is part of a wireshark capture, captured by a third VM on the same vSwitch. This all happens on the same host, no physical network involved. I've started ioping around time 20. There were no packets sent until the five second delay was over: No. Time Source Destination Protocol Info 1082 16.164096 192.168.250.10 192.168.250.20 NFS V3 WRITE Call (Reply In 1085), FH:0x3eb56466 Offset:0 Len:84 FILE_SYNC 1083 16.164112 192.168.250.10 192.168.250.20 NFS V3 WRITE Call (Reply In 1086), FH:0x3eb56f66 Offset:0 Len:84 FILE_SYNC 1084 16.166060 192.168.250.20 192.168.250.10 TCP nfs > iclcnet-locate [ACK] Seq=445 Ack=1057 Win=32806 Len=0 TSV=432016 TSER=769110 1085 16.167678 192.168.250.20 192.168.250.10 NFS V3 WRITE Reply (Call In 1082) Len:84 FILE_SYNC 1086 16.168280 192.168.250.20 192.168.250.10 NFS V3 WRITE Reply (Call In 1083) Len:84 FILE_SYNC 1087 16.168417 192.168.250.10 192.168.250.20 TCP iclcnet-locate > nfs [ACK] Seq=1057 Ack=773 Win=4163 Len=0 TSV=769110 TSER=432016 1088 23.163028 192.168.250.10 192.168.250.20 NFS V3 GETATTR Call (Reply In 1089), FH:0x0bb04963 1089 23.164541 192.168.250.20 192.168.250.10 NFS V3 GETATTR Reply (Call In 1088) Directory mode:0777 uid:0 gid:0 1090 23.274252 192.168.250.10 192.168.250.20 TCP iclcnet-locate > nfs [ACK] Seq=1185 Ack=889 Win=4163 Len=0 TSV=769821 TSER=432716 1091 24.924188 192.168.250.10 192.168.250.20 RPC Continuation 1092 24.924210 192.168.250.10 192.168.250.20 RPC Continuation 1093 24.924216 192.168.250.10 192.168.250.20 RPC Continuation 1094 24.924225 192.168.250.10 192.168.250.20 RPC Continuation 1095 24.924555 192.168.250.20 192.168.250.10 TCP nfs > iclcnet_svinfo [ACK] Seq=6893 Ack=1118613 Win=32625 Len=0 TSV=432892 TSER=769986 1096 24.924626 192.168.250.10 192.168.250.20 RPC Continuation 1097 24.924635 192.168.250.10 192.168.250.20 RPC Continuation 1098 24.924643 192.168.250.10 192.168.250.20 RPC Continuation 1099 24.924649 192.168.250.10 192.168.250.20 RPC Continuation 1100 24.924653 192.168.250.10 192.168.250.20 RPC Continuation 2nd Update 2011-07-06: There seems to be some influence from TCP window sizes. I was not able to reproduce this problem using FreeNAS (based on FreeBSD) as a NFS server. The wireshark captures showed TCP window updates to 29127 bytes in regular intervals. I did not see them with OpenIndiana, which uses larger window sizes by default. I can no longer reproduce this problem if I set the following options in OpenIndiana and restart the NFS server: ndd -set /dev/tcp tcp_recv_hiwat 8192 # default is 128000 ndd -set /dev/tcp tcp_max_buf 1048575 # default is 1048576 But this kills performance: Writing from /dev/zero to a file with dd_rescue goes from 170MB/s to 80MB/s. Update 2011-07-07: I've uploaded this tcpdump capture (can be analyzed with wireshark). In this case 192.168.250.2 is the NFS server (OpenIndiana b148) and 192.168.250.10 is the ESXi host. Things I've tested during this capture: Started "ioping -w 5 -i 0.2 ." at time 30, 5 second hang in setup, completed at time 40. Started "ioping -w 5 -i 0.2 ." at time 60, 5 second hang in setup, completed at time 70. Started "fsync-tester" at time 90, with the following output, stopped at time 120: fsync time: 0.0248 fsync time: 5.0197 fsync time: 5.0287 fsync time: 5.0242 fsync time: 5.0225 fsync time: 0.0209 2nd Update 2011-07-07: Tested another NFS server VM, this time NexentaStor 3.0.5 community edition: Shows the same problems. Update 2011-07-31: I can also reproduce this problem on the new ESXi build 4.1.0.433742.

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  • How to get automatic upgrades to work on Ubuntu Server?

    - by J. Pablo Fernández
    I followed the documentation for enabling automatic upgrades in Ubuntu servers, but it's not really updating anything at all. My /etc/apt/apt.conf.d/50unattended-upgrades looks almost like the default. // Automatically upgrade packages from these (origin, archive) pairs Unattended-Upgrade::Allowed-Origins { "Ubuntu karmic-security"; "Ubuntu karmic-updates"; }; // List of packages to not update Unattended-Upgrade::Package-Blacklist { // "vim"; // "libc6"; // "libc6-dev"; // "libc6-i686"; }; // Send email to this address for problems or packages upgrades // If empty or unset then no email is sent, make sure that you // have a working mail setup on your system. The package 'mailx' // must be installed or anything that provides /usr/bin/mail. Unattended-Upgrade::Mail "[email protected]"; // Automatically reboot *WITHOUT CONFIRMATION* if a // the file /var/run/reboot-required is found after the upgrade //Unattended-Upgrade::Automatic-Reboot "false"; The directory /var/log/unattended-upgrades/ is empty. Running /etc/init.d/unattended-upgrades start is not very nice: root@mozart:~# /etc/init.d/unattended-upgrades start Checking for running unattended-upgrades: root@mozart:~# Something seems to be broken, but I'm not sure why. I have pending updates and they are not being applied: root@mozart:~# aptitude safe-upgrade Reading package lists... Done Building dependency tree Reading state information... Done Reading extended state information Initializing package states... Done The following packages will be upgraded: linux-libc-dev 1 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded. Need to get 0B/743kB of archives. After unpacking 4096B will be used. Do you want to continue? [Y/n/?] In all the servers I have, unattended upgrades seems to have been disabled: root@mozart:~# apt-config shell UnattendedUpgradeInterval APT::Periodic::Unattended-Upgrade root@mozart:~# Any ideas what am I missing?

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  • Two mouse, one left handed and another right handed. At the same time

    - by trailmax
    I would like to have two mouse connected to my computer, and have one mouse left-handed, another right-handed. And not needing to change any settings for using any of them. I've googled for this and did not find some information, but nothing helpful. Somebody suggested to have 2 accounts, some other suggested a short-cut that changes mouse buttons over. I did not like any of that. And I remember, I saw somebody using their laptop with right-handed touch-pad and left-handed mouse. At the same time. Both of my mouse are plain vanilla USB, with no drivers, tried finding drivers for any of the mouse did not get me anywhere. This is how mouse configuration looks like: There is no option for different mouse to be configured different. I think I need to install some mouse drivers/software that allow different configuration. Is there anything like this availble?? Many thanks in advance! p.s. Using Windows 7 Pro, one mouse is Fujitsu, another Sandsrom.

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  • How can I unify my email, calendar and tasks (2 exchange accounts + 1 gmail)

    - by Assaf Stone
    This is my situation: I work as a consultant, and thus work out of multiple computers: my work-laptop a desktop at my primary client my desktop at home an android smartphone an android tablet Likewise, I have multiple accounts: A Microsoft Exchange (2010 AFAIK) account A Microsoft Exchange (2007 AFAIK) account A gmail account The most important thing I need is the ability to have events in one calendar affect the free / busy status of all other accounts (so that if I am busy on Monday 9am with an event from my employer's account, it will show that time as busy in my client's account, and in the gmail account. Second thing I need is a unified view of all of my accounts' info: Appointments, email, tasks, and contacts (in that order of importance). I've already tried outlook synchronization tools such as gSyncit, to sync both exchange accounts with gmail, but this creates a mess when updating appointments (deleted appointments sometimes return, timestamps revert). Is there perhaps some way to at least synchronize the free/busy state in a way that all of my calendar apps / accounts will look there to see if I can be invited? Just solving that would be well worth my while. Thanks, Assaf

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  • Throwing TRIM support in Ubuntu guest at Win7-Virtualbox host

    - by user141472
    I have VirtualBox 4.1.14 on Windows 7 as host, and Ubuntu server 11.10 as guest. System was installed at traditional HDD years ago (and upgraded later), but now it's at SSD as expanding drive. There is "AHCI" and "it's SSD" features enabled in SATA controller. Problem is, this expanding drive growth to it's almost max size (90% of it), but actually in VM only about 50% spent. Also, guest VM does not recognize /dev/sda as SSD, /sys/block/sda/queue/rotational says "1", /sys/block/sda/queue/discard_* all says "0". And, of course, I cannot run fstrim /, it says that operation not supported. Is there some trick to enable TRIM support in my guest system without reinstalling it?

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  • Un-balanced network speed although using fiberoptic cable line

    - by Hoàng Long
    I'm not sure this is a right place to ask this question, but there's a strange thing that I don't quite sure what the reason is. My company has hired a fiberoptic cable line for network use (Wifi and cable through a router). But the strange thing is that, whenever someone view YouTube or listen stream music, then network speed for all the others become extremely slow. The download speed for that person is about 4-5 MB/s (or more), but others suffer. I'm still a newbie about networking. But I know there should be a solution. Could anyone tell me a way to stop this bad behavior? It's not possible for asking people not viewing YouTube, since that's part of their jobs. Any insights about this problem would be very welcome.

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  • What is a "good" tool to password-protect .pdf files?

    - by Marius Hofert
    What is a "good" tool to encrypt (password protect) .pdf files? (without being required to buy additional software; the protection can be created under linux but the password query should work on Windows, too) I know that zip can do it: zip zipfile_name_without_ending -e files_to_encrypt.foo What I don't like about this is that for a single file, you have to use Winzip to open the zip and then click the file again. I rather would like to be prompted for a password when opening the .pdf (single file case). I know that pdftk can do this: pdftk foo.pdf output foo_protected.pdf user_pw mypassword. The problem here is that the password is displayed in the terminal -- even if you use ... user_pw PROMPT. But in the end you get a password-protected .pdf and you are prompted for the password when opening the file.

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  • My KDE very slow in certain operations

    - by Pietro
    I have a problem with my Linux installation. It seems that the KDE code that deals with directory windows is extremely slow (on both Dolphin and Konqueror). This happens both when I click on a directory icon and when I want to open/save a file from many KDE applications. The time the window takes to open can be one minute or more. The same happens when I right click on an icon. Looking at the CPU usage, this is very low (less than 10%). Am I the only one with this problem, or is it well known and maybe already fixed? Consider that I cannot update to a more recent version of OpenSuse. Thank you, Pietro Configuration: Linux version: OpenSuse 11.4 KDE 4.6.0 System: DELL Precision T3500 - Intel Xeon Home directory mounted on a remote drive. <-- could this be the reason?

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  • Hardening Word and Reader against exploits

    - by satuon
    I have recently heard a lot about exploits for PDF and DOC files on Windows, which when opened in Reader or Word would infect the computer. I'm assuming most of those exploits rely on some kind of active content, I've heard that Reader allows JavaScript for example. I already have antivirus, but I've heard they often don't catch those types of exploits, so I want to try a little proactive defense. Is there a way to harden Reader and Word by disabling plugins or options that are often used by exploits?

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  • Configuration to point an X tty to a separate system?

    - by buu700
    Specifically, I have an Ubuntu 10.04 system with a headless Ubuntu 12.04 virtual machine, and I'm looking for a way to have it set up so pressing ctrl+alt+F8 will take me into another X client which is connected to an X server on the vm (with gdm appropriately displayed at startup, etc.). As in, my startup script should spin up the headless machine and then immediately perform a "startx" pointed at the vm.

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  • What is the unit of size we get from using wmic command on windows

    - by Abhishek Simon
    I use a couple of wmic commands and I was wondering how can a user come to know the the unit of any size related command output? For Instance I use the below 2 commands wmic /node:Abhishek-PC cpu get maxclockspeed,l2cachesize,loadpercentage output: L2CacheSize LoadPercentage MaxClockSpeed 8192 1 1595 8192 1 1595 wmic /node:Abhishek-PC LogicalDisk Where DriveType="3" Get DeviceID,Size,FreeSpace output: DeviceID FreeSpace Size C: 13933780992 73300701184 E: 23688204288 73405558784

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  • XP Mode as a server, Win 7 as a client

    - by Spyro
    I have two virtual machines (XP Mode). They are connected to each other by a network setting - Internal Network. It is the only working setting. This is the only way I got two virtual XP to ping each other. Now I want to connect each of them from the application that runs on Windows 7 which is hosting both virtual machines, but I can't do that. The firewall on both XP-Mode machines is disabled. Any other networking setting added as additional adapter on Xp-Mode machine does not allow me to connect from Windows 7. So my question is this - how to enable connection from Windows 7 application to XP mode application (client - server)? Point 2 (pass message) work perfectly because of the "internal network" setting. The problem is point 1 and 3.

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  • How to disable autocmd or augroup in vim?

    - by Andrew Vit
    Given I have a group of commands such as: augroup MyGroup autocmd CursorMoved * silent call MyCommandOne() augroup END I want to disable all the autocommands in MyGroup for a time and then re-enable it later. Is there anything I can do with the group? Specifically, is there a way to disable the whole group at once? If not, what can I do to disable individual commands? Looking at the help, I only see a few options: augroup! will delete the whole group: I don't think this is right since I will want to re-enable it again. (But maybe there's a way to easily redefine the group again?) :noautocmd will only disable the callbacks for a one-off invocation of a command. (And it disables all autocmds, not specified ones) eventignore addresses the event binding, not the command: it sounds like it disables all bound commands for a given event, not just one command or a group I can specify. How is this done?

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  • VirtuaWin shows Visual Studio 2010 in all Desktops

    - by w0lf
    I'm using VirtuaWin in Windows 7 to have virtual desktop functionality and I think this program is awesome. There's one small issue, though: on the computer at work, when moving to another desktop it hides all windows in the current desktop, except any windows of Visual Studio 2010. This means that VS 2010 shows up in all desktops, while for all other windows, VirtuaWin applies the correct behavior. The strange thing is that this issue happens on one computer only; on the others I have it works OK. I have checked the Window Rules section and nothing seems strange in there. Is anyone else experiencing this kind of problem? Any ideas on how to solve it?

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  • Why can I not print from Google Chrome?

    - by David Faux
    When I try to print any page from Chrome on my Windows 7 machine, I get the following message. click to enlarge By the way, the gray text in the middle reads Google Chrome cannot show the print preview when the built-in PDF viewer is disabled. In order to see the preview please visit chrome//plugins/, enable the Chrome PDF Viewer, and try again. When I check my plugins, I find that Chrome PDF Viewer is already enabled. Why can't I print?

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  • Windows Phone 8, Windows 8 : un seul et même Core, l'OS mobile de Microsoft s'ouvre au C/C++ et à Direct X

    Windows Phone 8, Windows 8 : un seul et même Core L' OS mobile de Microsoft s'ouvre au C/C++ et à Direct X Microsoft a officiellement parlé pour la première fois hier soir de la Plateform Preview du prochain Windows Phone 8. Avec une surprise qui n'en était presque plus une : l'OS et Windows 8 s'appuieront sur un même « Shared Windows Core ». Par « Core », Joe Belfiore ? responsable de la plateforme de Windows Phone - a précisé sur la scène du Windows Phone Summit de San Francisco que ce rapprochement concenrnait le Kernel, les drivers, la sécurité, le Networking, le système de fichiers ou la gestion des médias. Sans oublier, bien sûr, les outils de développem...

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  • Introduction aux algorithmes et aux structures de données, un cours par Thibaut Cuvelier

    En 1976, le livre Algorithms + Data Structures = Programs paraît : le postulat posé par ce titre est bien qu'un algorithme n'est rien s'il n'a pas de structure de données appropriée pour stocker ses données. On étudiera, dans cette introduction, tant les algorithmes principaux (tri, graphes %u2013 le bien connu Dijkstra mais aussi Bellman-Ford pour la recherche de plus court chemin) que des structures de données très fréquentes sur lesquelles viennent se construire des solutions élaborées à des problèmes complexes (pile, file, dictionnaire, etc.).

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  • REGISTER NOW: FY13 LIVE Oracle PartnerNetwork Kickoff is June 26th

    - by Javier Puerta
    REGISTER NOW: FY13 LIVE Oracle PartnerNetwork Kickoff is June 26thJoin us for a live online event hosted by the Oracle PartnerNetwork team as we kickoff FY13. Hear messages from Judson Althoff, Oracle's SVP of Worldwide Alliances & Channels, as well as other Oracle executives, thought leaders, and partners. During Partner Kickoff you will see: Judson Althoff on FY12 recap and FY13 call to action Executive Addresses from Mark Hurd, Thomas Kurian, John Fowler, and Regional Sales Executives Embed, Sell and Implement the Full Portfolio Business Opportunities for ISV / OEM’s, System Integrators, and Channel Partners Q&A with Regional Alliances & Channels Executives Please register for the EMEA Partner Kickoff at the link below: Region Date / Time EMEA Tuesday, June 26th @ 15:00 CET (14:00 UK)

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  • REGISTER NOW: FY13 LIVE Oracle PartnerNetwork Kickoff is June 26th

    - by Javier Puerta
    REGISTER NOW: FY13 LIVE Oracle PartnerNetwork Kickoff is June 26thJoin us for a live online event hosted by the Oracle PartnerNetwork team as we kickoff FY13. Hear messages from Judson Althoff, Oracle's SVP of Worldwide Alliances & Channels, as well as other Oracle executives, thought leaders, and partners. During Partner Kickoff you will see: Judson Althoff on FY12 recap and FY13 call to action Executive Addresses from Mark Hurd, Thomas Kurian, John Fowler, and Regional Sales Executives Embed, Sell and Implement the Full Portfolio Business Opportunities for ISV / OEM’s, System Integrators, and Channel Partners Q&A with Regional Alliances & Channels Executives Please register for the EMEA Partner Kickoff at the link below: Region Date / Time EMEA Tuesday, June 26th @ 15:00 CET (14:00 UK)

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  • New channels for Exadata 11.2.3.1.1

    - by Rene Kundersma
    With the release of Exadata 11.2.3.1.0 back in April 2012 Oracle has deprecated the minimal pack for the Exadata Database Servers (compute nodes). From that release the Linux Database Server updates will be done using ULN and YUM. For the 11.2.3.1.0 release the ULN exadata_dbserver_11.2.3.1.0_x86_64_base channel was made available and Exadata operators could subscribe their system to it via linux.oracle.com. With the new 11.2.3.1.1 release two additional channels are added: a 'latest' channel (exadata_dbserver_11.2_x86_64_latest) a 'patch' channel (exadata_dbserver_11.2_x86_64_patch) The patch channel has the new or updated packages updated in 11.2.3.1.1 from the base channel. The latest channel has all the packages from 11.2.3.1.0 base and patch channels combined.  From here there are three possible situations a Database Server can be in before it can be updated to 11.2.3.1.1: Database Server is on Exadata release < 11.2.3.1.0 Database Server is patched to 11.2.3.1.0 Database Server is freshly imaged to 11.2.3.1.0 In order to bring a Database Server to 11.2.3.1.1 for all three cases the same approach for updating can be used (using YUM), but there are some minor differences: For Database Servers on a release < 11.2.3.1.0 the following high-level steps need to be performed: Subscribe to el5_x86_64_addons, ol5_x86_64_latest and  exadata_dbserver_11.2_x86_64_latest Create local repository Point Database Server to the local repository* install the update * during this process a one-time action needs to be done (details in the README) For Database Servers patched to 11.2.3.1.0: Subscribe to patch channel  exadata_dbserver_11.2_x86_64_patch Create local repository Point Database Server to the local repository Update the system For Database Servers freshly imaged to 11.2.3.1.0: Subscribe to patch channel  exadata_dbserver_11.2_x86_64_patch Create local  repository Point Database Server to the local repository Update the system The difference between 'situation 2' (Database Server is patched to 11.2.3.1.0) and 'situation 3' (Database Server is freshly imaged to 11.2.3.1.0) is that in situation 2 the existing Exadata-computenode.repo file needs to be edited while in situation 3 this file is not existing  and needs to be created or copied. Another difference is that you will end up with more OFA packages installed in situation 2. This is because none are removed during the updating process.  The YUM update functionality with the new channels is a great enhancements to the Database Server update procedure. As usual, the updates can be done in a rolling fashion so no database service downtime is required.  For detailed and up-to-date instructions always see the patch README's 1466459.1 patch 13998727 888828.1 Rene Kundersma

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  • EL 3.0 Public Review - JSR 341 and Java EE 7 Moving Along

    - by arungupta
    Following closely on the lines of EL 3.0 Early Draft, the specification is now available for a Public Review. The JCP2 Process Document defines different stages of the specifications. This review period closes Jul 30, 2012. Some of the main goals of the JSR are to separate ELContext into parsing and evaluation contexts, adding operators like equality, string concatenation, etc, and integration with CDI. The section A.7 of the specification highlights the difference between Early Draft and Public Review. Download the Public Review and and follow the updates at el-spec.java.net. For more information about EL 3.0 (JSR 341), check out the JSR project on java.net. The archives of EG discussion are available at jsr341-experts and you can subscribe to the users@el-spec and other aliases on the Mailing Lists page.

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  • PENGUIN IS GETTING READY FOR ORACLE OPENWORLD 2012

    - by Zeynep Koch
    Are you looking for reasons to attend Oracle Openworld, how about below Oracle Linux sessions and hands-on-labs.  1. General Session: Oracle Linux Strategy and Roadmap  In this session, Oracle executives will discuss Linux strategy; the roadmap; contributions to the Linux mainline kernel; and what's in store for upcoming releases of Oracle Linux and the Unbreakable Enterprise Kernel. Don’t miss this session. 2. New Features in Oracle Linux- A Technical Deep Dive Collaborating with the Linux community, Oracle engineers contribute to advancing Linux for mission-critical deployments. In this technical session, attendees will learn about the recent developments in Oracle Linux and the Unbreakable Enterprise Kernel 3. Why Switch to Oracle Linux?  Oracle is the only company that provides a complete Linux solution from applications to disk, fully optimized for Oracle hardware and software, with one-stop support. In this session you will hear from two customers that have successfully implemented Oracle Linux and saved 50 to 90 percent on Linux support costs as well as the reasons to switch to Oracle Linux. 4. Debugging and Configuration Best Practices for Oracle Linux This is one of our best attended sessions and most informative. In this best practices session, learn how to save time and money while preventing headaches and hassles. Discover expert secrets to get your Linux systems up and running (and keep them running), avoid common pitfalls, prevent problems, and circumvent known issues. 5. Top Technical Tips for Automatic and Secure Oracle Linux Deployments In this session, attendees will learn about how to easily deploy and install Oracle Linux systems using various technologies like Kickstart, Oracle Enterprise Manager OpsCenter, and Oracle VM Templates for applications on Linux. Additionally, the session will share useful Linux security tips and introduce utilities to help with hardening and securely operating an Oracle Linux system. We also have a great session in Oracle Develop track: 6. DTrace for Oracle Linux Initially announced at last year's Oracle Openworld, DTrace for Oracle Linux is now available for the Unbreakable Enterprise Kernel R.2. In this session held by one of the engineers working on the DTrace for Linux port, you will learn how you can use this powerful and flexible framework in your development environment. If you prefer to really have practical experience, don’t miss our two Hands-on-Labs where we will cover: HOL-1 : Oracle Linux Package Management: Configuring and Enabling Services In this session you will be Installing and configuring Oracle VM VirtualBox, importing the Oracle Linux virtual appliance. You will then use the package management on Oracle Linux using RPM and yum. You will also be able to review Ksplice, zero downtime kernel updates that enable you to apply security updates, patches and critical bug fixes without rebooting. HOL-2: Oracle Linux Storage Management with LVM and Device Mapper In this session you will learn about storage management with LVM2, the Linux Logical Volume Manager, Btrfs, preparing block devices, creating physical and logical volumes, creating file systems on top of logical volumes, and resizing file systems dynamically. You will also practice setting up software RAID devices, configuring encrypted block devices. You will also see Oracle Linux and Kpslice in the three demopods we will feature at Exhibition demogrounds. One in MySQL Connect and two in Oracle Openworld. What more do you need to come to San Francisco? Oh, I forgot to mention we also have great weather in fall.. Check out the Content Catalog and register to attend Oracle Linux sessions.

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  • iTunes Connect: Can I have one bank account for every currency I receive?

    - by cheeesus
    As I understand it, Apple does not do currency exchanges when they pay the app developers, they just forward the 70% share in the currency the customers bought it. So, if an app is available in different markets, the developer receives payments in different currencies. Is there a way to enter one bank account for every currency? For example, I'd like to set up a bank account in EUR for payments in EUR, one in GBP for payments in GBP, and likewise for USD etc. If all payments are going to the same bank account, my bank charges high conversion rates every time a payment in a 'foreign' currency comes in.

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  • What to use C++ for?

    - by futlib
    I really love C++. However, I'm struggling to find good uses for it lately. It is still the language to use if you're building huge systems with huge performance requirements. Like backend/infrastructure code at Google and Facebook, or high-end games. But I don't get to do stuff like that. It's also a good choice for code that runs close to the hardware. I'd like to do more low-level stuff, but it isn't part of my job, and I can't think of useful private projects that would involve that. Traditionally, C++ was also a good choice for rich client applications, but those are mostly written in C# and Obj-C lately - and aren't really that important anymore, with everything being a web app. Or a mobile app, which are mostly written in Obj-C and Java. And of course, web-based desktop and mobile apps are quite prominent, too. At my job, I work mostly on web applications, using Java, JavaScript and Groovy. Java is a good/popular choice for non-Google-scale backends, Groovy (or Python, or Ruby or Node.js) is pretty good for the server-side of web apps and JavaScript is the only real choice for the client-side. Even the little games I'm writing in my spare time are lately mostly written in JavaScript, so they can run in the browser. So what would you suggest I could use C++ for? I'm aware that this question is very similar. However, I don't want to learn C++, I was a professional C++ programmer for years. I want to keep doing it and find good new use cases for it. I know that I can use C++ for web apps/games. I could even compile C++ to JavaScript with Emscripten. However, it doesn't seem like a good idea. I'm looking for something C++ is really good at to stay competent in the language. If your answer is: Just give up and forget C++, you'll probably never need it again, so be it.

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