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• Top 10 Things You Can Experience in Oracle OpenWorld Lounges

  - by Oracle OpenWorld Blog Staff

  by Mike Stiles From the home office in Redwood Shores, 10 things you can experience in the Oracle OpenWorld Lounges: 10. Log onto free Wi-Fi (from comfortable chairs).9. Grab your Oracle Technology Network t-shirt. 8. Mingle with peers (and non-peers).7. Hang out with top Oracle experts. 6. Consult with Oracle Consulting. 5. Enjoy food & beverages in the Oracle Certification Lounge. 4. Unplug, relax and unwind. 3. Discover new products, services, and more. 2. Ask Oracle Support all your support questions.1. Update your social networks #oow Ready to get your lounge on? Register now.

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• Shotwell issues in 11.10

  - by John Speed

  I had used Shotwell happily previously then updated to Natty last week. Despite Shotwell showing on the tool bar on screen, when clicked, nothing happened, and it ignored my SD card when loaded. I read all sorts of remedies and tried everything to no avail. When I next turned on the laptop, Ocelot was available so with nothing to loose, I upgraded again. Still no Shotwell. Tried all the new fixes and now atleast I have the icon pictures but nothing behind it. When I ran the command to load the log file, Shotwell loaded and all my photos are present. Exited programme, and now nothing. Can anyone tell me where I have gone wrong please.

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• Restoring Databases

  - by Grant Fritchey

  I like the way Mike Walsh phrased it: You're Only As Good as Your Ability To Restore. Ain't it the truth. You may be taking backups, incrementals, and log backups of your databases. You may have DBCC in place, and all that fun stuff. But if you haven't restored the database, what do you have? You don't know. The trick is, restoring databases takes up a heck of a lot of space on your servers. To test all your productions backups, you'd need a system with as much space as production. unless.. Ever heard of SQL Virtual Restore? Check it out. With this, you answer Mike's questions and validate your backups without having to have twice the amount of space. That's a win, and we all know, winning is better than losing.

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• How to install an older version of Java

  - by Alex Spurling

  I updated my installation of the sun-java6-jdk package today to version 6.24-1build0.10.10.1 after being prompted by the update manager. However this now causes some compilation failures so I'd like to revert back to the previous version that I had installed. I've tried using Synaptic but the 'Force Version' menu command is disabled. I've tried the following command to install the previous version sudo apt-get install sun-java6-jdk=6.22-0ubuntu1~10.10 But I'm not sure that I have the correct version: Reading package lists... Done Building dependency tree Reading state information... Done E: Version ‘6.22-0ubuntu1~10.10’ for ‘sun-java6-jdk’ was not found I've taken this version number from this changelog: https://launchpad.net/ubuntu/+source/sun-java6/+changelog Is this the correct way to install a previous version of a package? Have I got the correct version from the sun-java6 change log?

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• "Updating VMware Tools for Linux" spins forever

  - by Nicolas Raoul

  I installed Ubuntu 11.04 inside VMware Player 3.1.4 inside Ubuntu 10.10 When first booting on the ISO image I was asked if I wanted to download the VMware Tools for Linux and I accepted. It downloaded for a few minutes, and then it has been "updating" for an hour already. Even shutting down the VM does not stop it. If I try to exit VMware, I am told "Cannot exit while still downloading. Cancel all downloads and try again." but the dialog's Cancel button is greyed out. Nothing special in vmware.log I ended up killink VMware. A few days after I restarted it, it asked about the VMware Tools again, I accepted again, and same problem...

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• MSR Issue on 12.1 Enterprise Controllers

  - by Owen Allen

  We've noticed a problem with MSR initialization and synchronization on Enterprise Controllers that are using Java 7u45. If you're running into the issue, these jobs fail with Java errors. Java 7u45 is bundled with Oracle Solaris 11.1 SRU 12, so if you're using that version or if you plan to use it, you should be aware of this issue. There's a simple fix. You can do the fix before upgrading to SRU 12, but you can't do it before you install the Enterprise Controller. First, log on to the Enterprise Controller system and stop the EC using the ecadm command. This command is in the /opt/SUNWxvmoc/bin directory on Oracle Solaris systems and in the /opt/sun/xvmoc/bin directory on Linux systems: ecadm stop -w Then run this command to fix the issue: cacaoadm set-param java-flags=`cacaoadm get-param -v java-flags -i oem-ec | sed 's/Xss256k/Xss384k/'` -i oem-ec And then restart the EC: ecadm start -w Once you apply this fix, you should be set.

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• Prevent Apache restarting automatically after upgrading packages

  - by HorusKol

  Following on from an earlier question: Is there a way to download security updates and notify admin without installing the update? A large number of packages interact with Apache (especially PHP) such that security updates to those packages can cause the server to attempt to restart the service. While my earlier question was answered, I'm now thinking that I need a different solution. So - is there are way to allow security updates to be applied using apt, have an email sent to an administrator, and, most importantly, prevent services from being restarted at the end of the installation/update process? The administrator will then be able to log in and restart the service manually.

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• IIS throws HTTP Error 503. The service is unavailable after installation of windows 8

  - by Floran

  I was using IIS7.5 on Windows 7. Everything worked great. I then installed Windows 8. The shortcut link to my IIS7.5 stopped working, because all this was apparently moved to a windows.old folder. I had to install IIS8 via the 'turn Windows features on/off'. After I did that, I saw my sites again and everything looked ok, until I browsed to a site and got the error: Service Unavailable HTTP Error 503. The service is unavailable. I restarted IIS, restarted my PC, restarted the single site, but the problem remains. I also tried looking at the event logs. My eventlogs used to be in C:\inetpub\logs\LogFiles\W3SVC4, but I don't see any log of today in there. Maybe that has changed with the new IIS as well? If so, where are the eventlogs now or where can I see where they should be saved?

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• Shotwell not available in 11.10

  - by John Speed

  I had used Shotwell happily previously then updated to Natty last week. Despite Shotwell showing on the tool bar on screen, when clicked, nothing happened, and it ignored my SD card when loaded. I read all sorts of remedies and tried everything to no avail. When I next turned on the laptop, Ocelot was available so with nothing to loose, I upgraded again. Still no Shotwell. Tried all the new fixes and now atleast I have the icon pictures but nothing behind it. When I ran the command to load the log file, Shotwell loaded and all my photos are present. Exited programme, and now nothing. Can anyone tell me where I have gone wrong please.

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• rts libgdx design?

  - by user36531

  I am attempting to create a simple rts multi-player strategy game using libgdx. I am stumped at the moment. I want the underlying game world to run at all times and be aware of where all items are on the map.. so if player A logs in and moves unit to some location on the grid and logs off, that unit info is still there and can be accessed again by player A when they log back on to move somewhere else (if it didnt get attacked during the playerA was logged off). How can i do this? Do i create a main game world on the server and when players connect make client just sequentially request whats in each visible tile? Is there an easier way to get this done? Or go SQL route? Whats better?

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• How do I run a 64-bit guest in VirtualBox?

  - by ændrük

  I would like to have an Ubuntu 11.04 64-bit test environment. When I try booting the Ubuntu 11.04 64-bit installation CD in VirtualBox, the following message is displayed by VirtualBox: VT-x/AMD-V hardware acceleration has been enabled, but is not operational. Your 64-bit guest will fail to detect a 64-bit CPU and will not be able to boot. Please ensure that you have enabled VT-x/AMD-V properly in the BIOS of your host computer. What am I doing wrong? Details: VBox.log, ubuntu-test.vbox, and /proc/cpuinfo. Kernel: Linux aux 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:24 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux The Virtualization setting in the BIOS is set to Enabled.

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• PIN request at each login after update to Maverick

  - by Giacomo Verticale

  I have a netbook with included 3G mobile broadband card (Huawei E620). I have configured the broadband network connection in the Network Manager and it works perfectly. However since Maverick upgrade, a window appears just after login I asking for the SIMcard PIN. This happens every time I log in and did not happen with Lucid. Note that the PIN is stored in the configuration of the mobile broadband connection and Lucid was satisfied with that. Is there a way to prevent this request or, at least, to have the system rember the PIN and stop ansking for it? If it may be useful, the broadband network connection is configured as not being available for other users. Also, I would like to keep the SIMcard asking for the PIN; only I do not want to insert it manually at login.

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• VLC unable to open MRL

  - by faizal

  I am trying to play a VCD using : /usr/bin/vlc vcd:// But i get the error below : VLC media player 2.1.4 Rincewind (revision 2.1.4-0-g2a072be) [0x14ec1c8] main interface error: no suitable interface module [0x1486118] main libvlc error: interface "globalhotkeys,none" initialization failed [0x1486118] main libvlc: Running vlc with the default interface. Use 'cvlc' to use vlc without interface. [0x7f815c0009b8] main input error: open of `vcd://' failed [0x7f815c0009b8] main input error: Your input can't be opened [0x7f815c0009b8] main input error: VLC is unable to open the MRL 'vcd://'. Check the log for details. Any way to resolve this ?

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• Jupiter seems to break multimonitor setup

  - by Philippe

  If Jupiter is in the startup my multimonitor setup will fail. Instead of two separate desktops the monitors will be mirrored, one over the other with the smaller notebook-desktop in the larger screen: After each new log-in I have to reset the Display settings in the "System Settings..." dialogue to two not mirrored screens, the changes don't seem to be saved. Given the the entry from xsession-errors /usr/lib/jupiter/scripts/resolutions: line 42: /var/jupiter/available_resolutions_LVDS: Permission denied I assumed that it's coming from Jupiter. Infact, if Jupiter is removed as startup application the desktop settings are fine. Any idea how to solve that issue?

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• Problem with Assimp 3D model loader

  - by Brendan Webster

  In my game I have model loading functions for Assimp model loading library. I can load the model and render it, but the model displays incorrectly. The models load in as if they were using a seperate projection matrix. I have looked over my code over and over again, but I probably keep on missing the obvious reason why this is happening. Here is an image of my game: It's simply a 6 sided cube, but it's off big time! Here are my code snippets for rendering the cube to the screen: void C_MediaLoader::display(void) { float tmp; glTranslatef(0,0,0); // rotate it around the y axis glRotatef(angle,0.f,0.f,1.f); glColor4f(1,1,1,1); // scale the whole asset to fit into our view frustum tmp = scene_max.x-scene_min.x; tmp = aisgl_max(scene_max.y - scene_min.y,tmp); tmp = aisgl_max(scene_max.z - scene_min.z,tmp); tmp = (1.f / tmp); glScalef(tmp/5, tmp/5, tmp/5); // center the model //glTranslatef( -scene_center.x, -scene_center.y, -scene_center.z ); // if the display list has not been made yet, create a new one and // fill it with scene contents if(scene_list == 0) { scene_list = glGenLists(1); glNewList(scene_list, GL_COMPILE); // now begin at the root node of the imported data and traverse // the scenegraph by multiplying subsequent local transforms // together on GL's matrix stack. recursive_render(scene, scene->mRootNode); glEndList(); } glCallList(scene_list); } void C_MediaLoader::recursive_render (const struct aiScene *sc, const struct aiNode* nd) { unsigned int i; unsigned int n = 0, t; struct aiMatrix4x4 m = nd->mTransformation; // update transform aiTransposeMatrix4(&m); glPushMatrix(); glMultMatrixf((float*)&m); // draw all meshes assigned to this node for (; n < nd->mNumMeshes; ++n) { const struct aiMesh* mesh = scene->mMeshes[nd->mMeshes[n]]; apply_material(sc->mMaterials[mesh->mMaterialIndex]); if(mesh->mNormals == NULL) { glDisable(GL_LIGHTING); } else { glEnable(GL_LIGHTING); } for (t = 0; t < mesh->mNumFaces; ++t) { const struct aiFace* face = &mesh->mFaces[t]; GLenum face_mode; switch(face->mNumIndices) { case 1: face_mode = GL_POINTS; break; case 2: face_mode = GL_LINES; break; case 3: face_mode = GL_TRIANGLES; break; default: face_mode = GL_POLYGON; break; } glBegin(face_mode); for(i = 0; i < face->mNumIndices; i++) { int index = face->mIndices[i]; if(mesh->mColors[0] != NULL) glColor4fv((GLfloat*)&mesh->mColors[0][index]); if(mesh->mNormals != NULL) glNormal3fv(&mesh->mNormals[index].x); glVertex3fv(&mesh->mVertices[index].x); } glEnd(); } } // draw all children for (n = 0; n < nd->mNumChildren; ++n) { recursive_render(sc, nd->mChildren[n]); } glPopMatrix(); } Sorry there is so much code to look through, but I really cannot find the problem, and I would love to have help.

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• How to configure permanent autologin?

  - by DanielGibbs

  I'm trying to set up an Ubuntu 12.04 machine as a kiosk and I would like it, on boot, to automatically log in as my kiosk user "kiosk", and start the appropriate display manager, in this case blackbox. I have configured /etc/lightdm/lightdm.conf as in this question and have an appropriate /usr/share/xsessions/blackbox.desktop to launch blackbox. I managed to get initial autologin by using the dbus-send method in this question, however if I right-click and select "Exit" from blackbox, then I am taken back to the login screen. How can I configure lightdm/ubuntu to always autologin as "kiosk" instead of displaying the login screen? Or, failing that, how can I configure blackbox to not display a menu when I right-click?

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• Weekend Project: Make Your Own Ferromagnetic Fluid

  - by Jason Fitzpatrick

  Experiments this simple and fun give you no reason to leave all science-based goofing off to the professionals: whip up a beaker of ferromagnetic fluid to capture magnetic waves in motion. The premise is simple: by combing a viscous liquid (in this case vegetable oil) with a magnetic powder (in this case MICR copy toner) and introducing a strong magnetic source (such as neodymium rare earth magnets), you can actually see the magnetic waves in physical space. It’s like the old magnetic filings on the table top trick, but in 3D. Check out the video above to see how you can mix up a batch of your own. How to Make Magnetic Fluid [YouTube] What Is the Purpose of the “Do Not Cover This Hole” Hole on Hard Drives? How To Log Into The Desktop, Add a Start Menu, and Disable Hot Corners in Windows 8 HTG Explains: Why You Shouldn’t Use a Task Killer On Android

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• How can I make the Ubuntu Software Center load?

  - by Kieran

  I launch it and it goes grey for almost immediately. Closing it prompts me to "force close" and no error report is given. I launched it in Terminal and this was the resulting log: 2012-11-23 22:39:25,175 - softwarecenter.ui.gtk3.app - INFO - setting up proxy 'None' 2012-11-23 22:39:25,179 - softwarecenter.db.database - INFO - open() database: path=None use_axi=True use_agent=True 2012-11-23 22:39:25,409 - softwarecenter.backend.reviews - WARNING - Could not get usefulness from server, no username in config file 2012-11-23 22:39:25,412 - softwarecenter.fixme - WARNING - logs to the root logger: '('/usr/lib/python2.7/dist-packages/gi/importer.py', 51, 'find_module')' 2012-11-23 22:39:25,412 - root - ERROR - Could not find any typelib for LaunchpadIntegration 2012-11-23 22:39:25,474 - softwarecenter.ui.gtk3.app - INFO - show_available_packages: search_text is '', app is None

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• Interviewing someone for general unix skills

  - by Christophe Vanfleteren

  How would you test a developer that claims to have *nix shell experience (just to be clear, we don't want to test if someone can develop on *nix, only that they know their way around the command line). I was thinking about making them solve a problem of getting information out of log files, which would involve some basics like cat, grep, cut, ... combined with piping. What other basic knowledge would you ask for? Once again, this isn't for interviewing someone who will develop for *nix systems, and also not for *nix system admins, but just for regular developers that sometimes need to do some work on a *nix system.

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• check support of Universal TUN/TAP Device on ubuntu 12.04

  - by nmaybar

  I am trying to setup Appgate Ip tunneling driver on my ubuntu 12.04 by following appgate instructions listed below: Installation, Linux Make sure the kernel has support for the Universal TUN/TAP device driver, and then log in as root and create a new directory somewhere, and copy the files ag_iptd add_route add_gw_route add_hosts_entry ag_iptd clean_hosts_file del_route del_gw_route del_hosts_entry interface_down interface_up remove_dns_server set_dns_server fix_localhost into that directory. Then start the IPTD daemon by doing modprobe tun <directory-somewhere>/ag_iptd There is also an init script 'ag_iptd.init' that can be installed to automatically start the IPTD daemon every time the OS is loaded.Please check the documentation of your Linux distribution on howto do this. so is there any way to checkif my ubuntu 12.04 kernel has support for the Universal TUN/TAP device driver? and how to do so? Thanks,

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• Is LightDM is broken? Autologin works

  - by Ben

  I recently upgraded my Mythbuntu box to 11.10. LightDM worked for a while and then I configured autologin on my user account. After some time, I've removed some packages to lean down the system. Now when I log out (from either Unity or Gnome Shell) I lose the X session, LightDM doesn't start back up. If I disable autologin through /etc/lightdm/lightdm.conf I get no login screen & no X. As I said, autologin works and gives me a Ubuntu Classic desktop. This is the only reference in dmesg to lightdm; [ 17.351023] type=1400 audit(1329530135.420:19): apparmor="STATUS" operation="profile_load" name="/usr/lib/lightdm/lightdm-guest-session-wrapper" pid=1097 comm="apparmor_parser" Can anyone help?

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• Mixing self signed certs with traditional SSL

  - by brentonstrine

  I have a traditional SSL cert going to a subdomain secure.mydomain.com on my domain. My host required me to have a dedicated IP in order to do this. I would also like to use HTTPS on my site for when I log into WordPress, etc. and since this is just for me, I don't mind self signing it and clicking through the scary messages. Is there a way to use a self signed cert for mydomain.com/wp-admin (just for me) when I already am on a dedicated IP that already has a traditional SSL cert for normal users on secure.mydomain.com? (FWIW, I'm on WHM without root access.)

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• Allow sudo on specific file from active directory group

  - by tubaguy50035

  I have an Ubuntu Server 12.04 box that has active directory integration running on it. I want to allow a certain active directory group access to execute a script as sudo. I want to do something like this: %programmers ALL=NOPASSWD: /usr/local/bin/createSambaShare.php When I log in with my active directory user and issue groups I do not see the group programmers, but I am a part of the programmers group within active directory. I've set up the group under the Unix attributes tab and given it an id of 1000 and added my user to it. My first thought was that I needed to add the group to the Ubuntu box. When I tried to do that, it told me that the programmers group already existed. What am I missing here?

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• I dont know how to run e2fsck or fsck and what are their differences

  - by Salvador

  My Kern.log file advise me to run e2fsck. Aug 30 14:10:11 ubuntu kernel: [ 122.378292] EXT4-fs (sda11): warning: maximal mount count reached, running e2fsck is recommended Aug 30 14:10:11 ubuntu kernel: [ 122.387488] EXT4-fs (sda11): mounted filesystem with ordered data mode. Opts: (null) /dev/sda11 is not mounted within my current OS (Ubuntu 10.04) I have known that e2fsck is a dangerous command when running against the root partition which is at the same hard disk as sda11. I would trust in this solution better than others: Can I run fsck or e2fsck when Linux file system is mounted?

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• Configure mailserver to make all the mails come to 1 single mailbox

  - by Vinod K

  mailserever domain name is "Vrk.com".. I want to store message sent to "yahoo.com" too...can i do tht.. I have /etc/postfix/virtual in which i have entered.. @yahoo.com root And 1 more thing...i have user named "vinod" in the mail server...now when i address any mails to "[email protected]"...it works....but when i do "[email protected]"...it gives me error saying...this doesnt exist in the the server...but when i send mails to "[email protected]"...it sends the mails (though it goes into the mail.log as an error entry)...it atleast doesnt stop me from sending it...why is that??

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