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• Running Ubuntu Server from a USB key / thumb drive (being mindful of flash's write limitations)

  - by andybjackson

  Having become disillusioned with hacking Buffalo NAS devices, I've decided to roll my own home server. After some research, I have settled on an HP Proliant Microserver with Ubuntu Server and a ZFS RAID-Z array for data. I settled on this configuration after trying and regretfully rejecting FreeNAS because the Logitech Media Server (LMS) software isn't available on the AMD64 flavour of this platform and because I think Debian/Ubuntu server is a better future-proof platform. I considered Open Media Vault, but concluded that it isn't quite yet ready for my purposes. That said, FreeNAS does include the option to run itself off a 2GB+ flash device like USB key or thumb drive. Apparently FreeNAS is mindful of the write limitations of flash devices and so creates virtual disks for running the OS, writing only the required configuration information back to flash. This would give me an extra data drive slot. Q: Can Ubuntu Server be configured sensibly to run off a flash device such as a USB key/thumb drive? If so, how? The write limitations of flash should be accounted for.

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• How to get Visual Studio 2010 Express Edition on Windows 7

  - by thanigai

  Visual studio 2010 is an amzing release from Microsoft. I have tried the beta 1,2 of Visual Studio 2010 and finally the full version is released. I am also interested in the latest edition of Windows which nothing but our Windows 7. Next to Vista I like this version very much. Out of curiosity I have installed the prebuild version of Windows 7. I tried installing the express edition here and it failed making me disappointed. I tried two or three times and finally I decided to download the trial version of Windows 7. After that I can install the Visual Studio 2010 express edition easily. I have given the link below from where I have downloaded the file. http://www.microsoft.com/express/downloads/ Here the link give is through Web PI Installer. Other option is you can download the ISO image file and burn them to a disc or use a virtual disc This Visual Web developer will provide the Sql Server engine alone. To get a Sql Server Management Studio get from the following link http://www.microsoft.com/express/Database/InstallOptions.aspx That's it all the things necessary for the web application programming is ready. Ah I forget to tell about the Silverlight. Please find the Silverlight 4 latest tools from the below link (WCF RIA services is the main update) http://www.silverlight.net/getstarted/ Silverlight 4 Tools(http://www.microsoft.com/downloads/details.aspx?FamilyID=eff8a0da-0a4d-48e8-8366-6ddf2ecad801&displaylang=en) Expression Blend 4 trial(http://www.microsoft.com/downloads/details.aspx?FamilyID=88484825-1b3c-4e8c-8b14-b05d025e1541&displaylang=en) I think the reader would have enjoyed on how to get these things. Please let me know if you are not clear with any of these things.  Thanks, Thani

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• How can I programmatically change the keyboard layout?

  - by Jason R. Coombs

  I want to run a shell command or script that will configure each of my Ubuntu Precise boxes to use the Dvorak keyboard layout as the default (and only) layout. With earlier versions, I was able to set the XKBVARIANT in /etc/default/keyboard but when I make this change in Precise (and reboot), the keyboard layout appears to be unaffected (both in console and in gnome). I tried also setting the XKBMODEL to pc105 and XKBLAYOUT to us, but that did not seem to help. I know I can set the layout for gnome using the 'keyboard layout' tool... but I want the change to affect the console, and I want to automate the process. How can I accomplish this? Edit: To clarify, I want to know how I can cause to change (using only a script or command-line) the keyboard layout to be Dvorak as the default and only keyboard layout for both Gnome and the console. I want this change to be persistent (survive reboots), just as it is when the change is made through the Keyboard Layout tool. Edit: Let me put it another way. If I had installed the operating system myself (which I did not because the OS was installed by the virtual machine infrastructure), I could have selected the desired keyboard layout at install time, and that layout would be applied persistently, system-wide. How can I change the layout to appear as if I had set it during the install process?

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• Terminal/Putty showing control characters (^M) after updating

  - by jaycee48

  I updated my system yesterday afternoon using the recommended updates from Update Manager. After it completed, I shutdown my system and went home for the day. I come in this morning and I am getting control characters displayed when using vi in both the standard terminal emulator, putty, and putty inside of my Windows virtual that I run with VirtualBox. I have made no other system changes and I cannot figure out how this occurred. It's as if every text file I have was created in DOS. I've searched the forums and I haven't found any answers. I am using xterm as my emulator and I checked with 3 of my coworkers and none of them are having this problem so we do not believe it is a server side issue. Especially since I've checked 3 different servers. There's nothing in my .profile other than PATH variables so I'm using the same terminal settings as everyone else. Some files are fine (I can open and read both /etc/environment and my .profile) but most of any kind of server generated log file is trash. Running cat or head on the same file displays the contents without the characters. Any ideas would be appreciated. Thanks.

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• Wer kennt Oracle Label Security?

  - by Heinz-Wilhelm Fabry (DBA Community)

  Oracle Label Security (OLS) ist eine Option der Enterprise Edition der Datenbank seit der Datenbankversion 9.0.1. Es handelt sich bei OLS um eine fertige Anwendung, die vollständig auf Oracle Virtual Private Database (VPD) aufgebaut ist. Obwohl es sich also bei OLS um ein 'gestandenes' Oracle Produkt handelt, ist es vielen Kunden unbekannt. Oder vielleicht sollte man präziser sagen: Kaum ein Kunde redet über OLS. Das liegt sicherlich in erster Linie daran, dass Kunden, die sensibel für Security Fragen sind, sowieso nicht gerne Auskunft geben über die Massnahmen, die sie selbst ergriffen haben, sich zu schützen. Wenn man dann noch bedenkt, dass die Kunden, die OLS einsetzen, häufig aus Bereichen stammen, die für ihre Diskretion bekannt sind - Dienste, Polizei, Militär, Banken - hat man einen weiteren Grund dafür gefunden, warum so wenige über OLS reden. Das ist allerdings bedauerlich, denn besonders in dieser Zeit steigenden Security Bewusstseins, verdient OLS auf jeden Fall mehr Aufmerksamkeit. Dieser Tipp möchte deshalb dazu beitragen, OLS bekannter zu machen. Dazu werden zunächst einige einführende Informationen zu OLS gegeben. Danach wird anhand eines kleinen Beispiels gezeigt, wie man mit OLS arbeitet. Ergänzend sei hier noch erwähnt, dass der Einsatz von OLS keinerlei Veränderungen an vorhandenen Anwendungen erfordert. In der Oracle Terminologie heisst das: OLS ist transparent für Anwender und Anwendungen. Zum vollständigen Artikel geht es hier.

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• ArchBeat Link-o-Rama for October 18, 2013

  - by OTN ArchBeat

  Enriching XMLType data using relational data – XQuery and fn:collection in action | Lucas Jellema Another detailed technical post from the always prolific Lucas Jellema. Evil Behind ChangeEventPolicy PPR in CRUD ADF 12c and WebLogic Stuck Threads | Andrejus Baranovskis The latest post from Oracle ACE Director Andrejus Baranovskis is a bit of a preview of his presentation at the upcoming UKOUG 2013 event. Podcast: Interview with authors of "Hudson Continuous Integration in Practice" For your listening pleasure... Here's an Oracle Author Podcast Interview with "Hudson Continuous Integration in Practice" authors Ed Burns and Winston Prakash. Manual Recovery Mechanisms in SOA Suite and AIA | Shreenidhi Raghuram Solution architect Shreenidhi Raghuram's post combines information from several sources to provide "a quick reference for Manual Recovery of Faults within the SOA and AIA contexts." Event: Harnessing Oracle Weblogic and Oracle Coherence This OTN Virtual Developer Day event features eight sessions in two tracks, with presentations and hands-on labs for developers and architects delivered by experts in Weblogic, Coherence, and ADF. Registration is free. November 5th, 2013. 9am-1pm PT / 12pm-4pm ET / 1pm-5pm BRT Podcast: IoT Challenges and Opportunities - Part 2 Part 2 of the OTN ArchBeat Internet of Things podcast features a roundtable discussion of IoT challenges: massive data streams, security and privacy issues, evolving standards and protocols. Listen! Video: Design - ADF Architectural Patterns - Two for One Deal | Chris Muir Chris Muir explores the reuse of BTF workspaces across multiple applications and the advantages and disadvantages of reuse at the application level. Thought for the Day "Can't nothing make your life work if you ain't the architect." — Terry McMillan, American author (Born October 18, 1951) Source: brainyquote.com

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• Avoid overwriting all the methods in the child class

  - by Heckel

  The context I am making a game in C++ using SFML. I have a class that controls what is displayed on the screen (manager on the image below). It has a list of all the things to draw like images, text, etc. To be able to store them in one list I created a Drawable class from which all the other drawable class inherit. The image below represents how I would organize each class. Drawable has a virtual method Draw that will be called by the manager. Image and Text overwrite this method. My problem is that I would like Image::draw method to work for Circle, Polygon, etc. since sf::CircleShape and sf::ConvexShape inherit from sf::Shape. I thought of two ways to do that. My first idea would be for Image to have a pointer on sf::Shape, and the subclasses would make it point onto their sf::CircleShape or sf::ConvexShape classes (Like on the image below). In the Polygon constructor I would write something like ptr_shape = &polygon_shape; This doesn't look very elegant because I have two variables that are, in fact, just one. My second idea is to store the sf::CircleShape and sf::ConvexShape inside the ptr_shape like ptr_shape = new sf::ConvexShape(...); and to use a function that is only in ConvexShape I would cast it like so ((sf::ConvexShape*)ptr_shape)->convex_method(); But that doesn't look very elegant either. I am not even sure I am allowed to do that. My question I added details about the whole thing because I thought that maybe my whole architecture was wrong. I would like to know how I could design my program to be safe without overwriting all the Image methods. I apologize if this question has already been asked; I have no idea what to google.

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• Ubuntu 64bit Black Screen on Minecraft

  - by Signify

  I have tried posting on the forums, but I really need help (I'm a server admin and really don't want to have to switch to Windows just to run Minecraft). Anyhow, I originally was running openjdk6 as I was told that 7 was unstable and was getting periodical lag spikes while walking (at least once every 3 seconds the screen would freeze for a tenth of a second). After that, I attempted to install Sun's Java JDK7 (I couldn't get ahold of 6 without signing up for Oracle's newsletters). Upon attempting to run Minecraft, I got a black screen after logging in with this error message: 27 achievements 182 recipes Setting user: Thunder7102, -1618112820878091307 Exception in thread "Minecraft main thread" java.lang.UnsatisfiedLinkError: /home/noiro/.minecraft/bin/natives/liblwjgl.so: /home/noiro/.minecraft/bin/natives/liblwjgl.so: wrong ELF class: ELFCLASS32 (Possible cause: architecture word width mismatch) at java.lang.ClassLoader$NativeLibrary.load(Native Method) at java.lang.ClassLoader.loadLibrary1(ClassLoader.java:1939) at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1864) at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1825) at java.lang.Runtime.load0(Runtime.java:792) at java.lang.System.load(System.java:1059) at org.lwjgl.Sys$1.run(Sys.java:69) at java.security.AccessController.doPrivileged(Native Method) at org.lwjgl.Sys.doLoadLibrary(Sys.java:65) at org.lwjgl.Sys.loadLibrary(Sys.java:81) at org.lwjgl.Sys.<clinit>(Sys.java:98) at org.lwjgl.opengl.Display.<clinit>(Display.java:132) at net.minecraft.client.Minecraft.a(SourceFile:184) at net.minecraft.client.Minecraft.run(SourceFile:657) at java.lang.Thread.run(Thread.java:722) Now, this got me fed up, so I tried to install a Windows 7 virtual machine through virtualbox, I gave it 256mb of graphics memory with 2D and 3D acceleration and 3GB of RAM. I installed Java JDK7 for Windows (which does work from experience on my other Windows 7 partition). Once again, a black screen after login. What the heck is going on guys? My System Specs: Ubuntu 12.04 64bit Fully Updated running Gnome3 Nvidia GTS 450 1.3GB OC'd AMD Athlon II 4x 2.8Ghz 6GB of RAM So, what do you think?

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• tunneling x11vnc through ssh on a non standard port to ubuntu computer tightvnc

  - by user72372

  I have been stuck with setting up my virtual desktop on my ubuntu laptop. I am running ubuntu to ubuntu with x11vnc I start the process on my laptop as follows: " ssh -L5904:localhost:5900 -p Port remoteuser@remoteip." That command works, then I start x11vnc server, "x11vnc -noncache -once -shared -rfbauth ~/.vnc/passwd." This command works and starts connection. Then I open another window on my laptop and type, export VNC_VIA_CMD='/usr/bin/ssh -2 -c aes128-cbc -x -p Port -l User -f -: %L:%H:%R %G sleep 20' (not sure if works). then I type, vncviewer -endcodings Tight -depth 8 -quality 1 -via IPofremotemachine -u remoteuser localhost:01. The first time it work but from now on it just gives me the vncviewer -help screen everytime. I type in the password for my remote machine and then shows -help screen for vncviewer. I think the problem is with Tightvnc viewer but don't know what. Please help. I got some info on www.vanemery.com/Linux/VNC/vnc-over-ssh.html?.

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• How do I modify these VPN connection settings for Xfce?

  - by Dave M G

  I have signed up for a VPN (Virtual Private Network) service, and I configured it for use on my computer that runs Gnome Classic with the following instructions: In Terminal, install openvpn packages with sudo apt-get install network-manager-openvpn. 1. Restart the network manager with sudo restart network-manager 2. Run sudo wget https://www.xxxxxxx.com/ovpnconfigure.zip 3. Extract the files from the zip with unzip ovpnconfigure.zip. 4. Move cert.crt to /etc/openvpn 5. Open the Network Manager on the menu bar. 6. Choose add and select the OpenVPN connection type, and click Create. 7. Enter Private Internet Access SSL for the Connection Name. 8. Enter xxxxxx.xxxxxxxx.com for the Gateway 9. Select Password and enter your login credentials. 10. Browse and select the CA Certificate we saved in Step 3. 11. Choose Advanced and enable LZO Compression. 12. Apply and exit. 13. Connect using the Network Manager. It worked, but now I want to set up access to the same VPN service on another machine that runs Mythbuntu, which uses Xfce as its desktop manager. So every point from 5 on doesn't apply. How can I modify the above instructions so that I can get my VPN service working with Xfce. As a further note, while I can access the Xfce desktop directly if I need to, it's more convenient for me to access it via the command line and SSH from on of my other computers. A command line process would be ideal. (I looked for this, and found instructions only for PPTP access, whereas I need OpenVPN.)

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• Why doesn't it seem to be any development in the field of 3D VR gear, especially with regard to gaming?

  - by neuviemeporte

  I remember that way back around 1995, there was this big craze with VR in the media, a whole bunch of (mostly mediocre) games labeled as "virtual-reality-interactive-movie (...)" were published. If I recall correctly, the first 3D VR helmet was called VFX-1 and was sold bundled with Descent and some dedicated joystick. I never owned one, and I read just one review which was mostly enthusiastic, but pointed to some weak points, like the eyes getting tired after an hour or so of playing. Then the whole thing basically flickered down and died. I suppose the main reason it wasn't successful was that the hardware of the day was not powerful enough, the VR gear's design wasn't perfected to make it comfortable and natural to use, and the companies that made it failed to market it successfully. What I can't understand is why isn't there any development in the field today. There is some vr-ish hardware mostly targeted at the consoles (Kinect, Wii remote, TrackIR), but all projects of creating some 3d head-mounted display system seem to be in early infancy, appear once in a trade show somewhere and aren't heard of again. I think it could work great with head tracking and some of today's shooters, flight sims (trackIR is nice but the movement scale translation is awkward) and other games with an FPP POV. Is there any technological reason why decent vr headgear can't be made today, or is it just that nobody really cares/everyone is scared to repeat the '90s failure?

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• Two Upcoming Server Virtualization Webcasts

  - by Chris Kawalek

  We have a couple of interesting server virtualization webcasts coming up that you might be interested in. Have a look:  Webcast 1: October 23rd, 9 am PST Virtualized Infrastructure Simplified with Oracle VM and NetApp Storage and Data Management Solutions Point-and-Click Interface Deploys Virtualized Data Infrastructure in Minutes  Provisioning and deploying a virtual data infrastructure can be costly, time-consuming, and prone to error. Oracle VM and NetApp joint solutions, however, give you a single point-and-click interface to deploy your virtualized data infrastructure seamlessly in minutes. Join us in this live webcast to learn more from product experts and view a product demo. Register (for free!) here.  Webcast 2: November 7th, 9 am PST Report Shows Oracle VM Up to 10x Faster than VMware vSphere 5 in Time to Deployment Time is your IT department’s greatest commodity. So when a new report reveals that your IT staff can deploy Oracle Real Application Clusters (Oracle RAC) up to 10 times faster than a traditional install performed with VMware vSphere 5, it’s newsworthy. Join us in this live webcast to learn how you can realize your time savings. Register (for free!) here. 

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• Hosting and scaling of a facebook application on cloud?

  - by DhruvPathak

  We would be building a facebook application in django(Python), but still not sure of where to host it economically,and with a good provision to scale in case the app gets viral. Some details about the app: i) Would be HTML based like a website,using django as a framework. ii) 100K is the number of expected pageviews in a day,if the app is viral. iii) The users will not generate any media content,only some database data will be generated by them. It would be great if someone with more experience can guide on following points: A) Hosting on google app engine or Amazon EC2 or some other cloud like RackSpace : Preferable points found in AppEngine were ease of deployment,cost effectiveness and easy scaling. For EC2: Full hold of the virtual machine,Amazon NoSQL and RDMBS database services in case we decide to use them. B) Does backend technology affect monthly cost ? eg. would CPU and memory usage difference of Django over , for example , PHP framework like CodeIgnitor really make remarkable difference in running costs. ( Here is the article that triggered this thought process : http://journal.dedasys.com/2010/01/12/rough-estimates-of-the-dollar-cost-of-scaling-web-platforms-part-i#comments) C) Does something like Heroku , which provides additional services over Amazon EC2, prove to be better than raw cloud management ? It is not that we are trying for premature scaling, we just want to have a good start so that we are ready to handle unpredicted growth and scale.

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• Pathfinding with MicroPather : costs calculations with sectors and portals

  - by Adan

  Hello, I'm considering using micropather to help me with pathfinding. I'm not using a discrete map : I'm working in 2d with sectors and portales. However, I'm just wondering what is the best way to compute costs with this library in this context. Just to be more clear about geometrical shapes I'm using : sectors are basically convex polygons, and portals are segments that lies on sector's edge. Micropather exposes a pure virtual Graph class that you must inherate and overrides 3 functions. I understand how pathfinding works, so there's no problem in overriding those functions. Right now, my implementation give me results, i.e I'm able to find a path in my map, but I'm not sure I'm using an optimal solution. For the AdjacentCost method : I just take the distance between sector's centers as the cost. I think a better solution should be to use the portal between the two sectors, compute its center, and then the cost should be : distance( sector A center, portal center ) + distance ( sector B center, portal center ). I'm pretty sure the approximation I'm using with just sector's center is enough for most cases, but maybe with thin and long sectors that are perpendicular, this approximation could mislead the A* algorithm. For the LeastCostEstimate method : I just take the midpoint of the two sectors. So, as you understand, I'm always working with sectors' centers, and it's working fine. And I'm pretty sure there's a better way to work. Any suggestions or feedbacks? Thanks in advance!

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• Subdomain redirect to WWW

  - by manix

  I have the domain example.com and the test.example.com running on apache server. For some reason when I try to visit test.example it is redirected to www.test.example and by consequence a Server not found error is displayed in the browser. Both .htaccess (root and subdomain folder) files are empty. Additional facts I have another subdomain xyz.example.com pointed to public_html/xyz directory with some content inside (index.html with "hello world message") and it works fine if I use xyz.example.com instead of www.xyz.example.com. So, can you help me to point to the right direction in order. I have a vps and I am able to change any file if is required. Below you can find my virtual host configuration. <VirtualHost xx.xxx.xxx:80> ServerName test.example.com ServerAlias www.test.example.com DocumentRoot /home/example/public_html/test ServerAdmin [email protected] UseCanonicalName Off CustomLog /usr/local/apache/domlogs/test.example.com combined CustomLog /usr/local/apache/domlogs/test.example.com-bytes_log "%{%s}t %I .\n%{%s}t %O ." ScriptAlias /cgi-bin/ /home/example/public_html/test/cgi-bin/ # To customize this VirtualHost use an include file at the following location # Include "/usr/local/apache/conf/userdata/std/2/example/test.example.com/*.conf" </VirtualHost>

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• WebLogic 12c training in Dutch–May 10th & 11th 2012 Utrecht Netherlands

  - by JuergenKress

  Axis into ICT offers you the opportunity to increase your skills. We are organizing ‘Bring Your Own Laptop Knowledge Sessions‘. In a small group of up to 8 people we are going discuss all the practical aspects of WebLogic Server you ever wanted to know. This is not a standard course, but a training where applying the material in practice is of importance. All participants will receive their own virtual machine, which offers you to ability to continue afterwards with your own practice environment. By keeping the groups small we create an informal atmosphere with plenty of room for all your questions or to even discuss your specific situation. The approach is highly interactive; after all you are attending to increase your knowledge. Topics that will be covered Introduction JVM Tuning Deployment Diagnostic Framework Class Loading Security Configure Resources Clustering Scripting Register for this session You are interested in the ‘Bring Your Own Laptop Knowledge Sessions: WebLogic 12c’? Register for one of two possibilities by using the form below. After registration you will receive a confirmation by e-mail. Training will be in Dutch! Date: May 10 & 11 2012 from 09:30 – 17:00 hrs Location: Axis into ICT Headquarters (Utrecht) Expenses: € 700,- per person (VAT excluded) For registration and details please visit our website. Want to promote your event? Let us know Twitter @wlscommunity! 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: Axis,education,WebLogic training,WebLogic,WebLogic Community,OPN,Oracle,Jürgen Kress,WebLogic 12c

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• What is the best way for an experienced developer to work on a WordPress blog

  - by nanothief

  I'm beginning to work on my first WordPress blog, however I've noticed most tutorials just have you do modifications (such as theme changes, installing plugins) on the production site. This worries me for a few reasons: No backups No version control If you make a mistake, your production site is affected Developing remotely is slower than local development, especially when tweaking css files. I understand why WordPress works like this - it allows people with no development experience to manage their WordPress installation (or the one provided by their service provider). It also allows you to work on the WordPress installation without having ssh access to the server. However as I am confortable working with tools like git and ssh, and am using a virtual server for the blog, this isn't very important to me. So I was wondering what techniques experienced developers use when working on a WordPress blog. For example: Do you develop locally, then push the changes to the live site? How do you do this? How do you manage database changes and backups? What do you store under version control (if anything)? If a plugin changes the database, do you somehow track the changes it does in version control, so you can rollback the changes done by the plugin if you need to? Or maybe I'm just overcomplicating everything if working on the production site isn't as risky as I am thinking it would be. I would appreciate any answers either way.

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• Problem with alleg42.dll / program crashes / Allegro & Codeblocks

  - by user24152

  I'm having a serious problem with allegro. The program should display random pixels on the screen and when I build and run it I get the following error message: Below is the full code of my program: #include <stdio.h> #include <stdlib.h> #include <time.h> #include "allegro.h" #define Text_Color_Red makecol(255,0,0) int main() { int ret; int color_depth = 32; int x; int y; int red; int green; int blue; int color; //init allegro allegro_init(); //install keyboard install_keyboard(); //set color depth to 32 bits set_color_depth(color_depth); //init random seed srand(time(NULL)); //init video mode to 640 x 480 ret = set_gfx_mode(GFX_AUTODETECT_WINDOWED,640,480,0,0); if(ret !=0) { allegro_message(allegro_error); return 1; } //Display string textprintf(screen,font,0,0,10,0,Text_Color_Red,"Screen Resolution is: %dx%d -- Press ESC to quit !",SCREEN_W,SCREEN_H); //display pixels until ESC key is pressed //wait for keypress while(!key[KEY_ESC]) { //set a random location x = 10 + rand() % (SCREEN_W-20); y = 10 + rand() % (SCREEN_H-20); //set a random color red = rand() % 255; green = rand() % 255; blue = rand() % 255; color = makecol(red,green,blue); //draw the pixel putpixel(screen, x, y, color); } //quit allegro allegro_exit(); } END_OF_MAIN() Error message: AllegroPixels1.exe has encountered a problem and needs to close. We are sorry for the inconvenience. Error signature: AppName: allegropixels1.exe AppVer: 0.0.0.0 ModName: alleg42.dll ModVer: 4.2.3.0 Offset: 0006c05c I am using Windows XP inside a virtual machine under Parallels 7.0

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• slow virtualbox guest

  - by ecoologic

  I run a guest ubuntu 12.04 on a host ubuntu 12.04, with virtual box, and the guest is much, much slower than the host (ALT+TAB costs 4-5secs). I had a look around and I found contradicting opinions on virtualbox vs vmware (free), so I taught to keep the former. Both systems are updated, I installed the additions on the guest and I evenly split memory and video memory (64mb) between guest and host. I am running a toshiba m200 laptop with 4GB ram and shared video memory. The host bios does not include a configuration option for machine virtualization. I have 2 cpus and I can't give them both to the vm. Is there anything I overlooked that could solve my problem? Feel free to ask for more info, and thank you for any help. EDIT Idling with the monitor open the (single) guest cpu never gets below 55% and could raise to 80 - 90% just moving the mouse around, opening ff will cause the monitor to run 100% in the guest, while the host shows that both cpus are evenly working around 60%. My cpu is Intel® Core™2 Duo CPU T5450 @ 1.66GHz × 2. If this is not a configuration problem, does it mean my machine is too weak for virtualization?

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• USB mouse pointer only moving horizontally on macbook 6.2 with 12.04

  - by Glyn Normington

  After installing Ubuntu 12.04 on a macbook pro 6.2, the touchpad and external USB mouse worked perfectly. After rebooting I can't get either touchpad or external USB mouse to work. Sometimes no mouse pointer is visible, but more often I can only move the mouse pointer horizontally five sixths of the way across the display (from the top left). I have uninstalled mouseemu. xinput list shows the USB mouse. xinput query-state for the USB mouse shows the following: ButtonClass button[1]=up ... button[16]=up ValuatorClass Mode=Relative Proximity=In valuator[0]=480 valuator[1]=2400 valuator[2]=0 valuator[3]=3 and re-issuing this command with the pointer at its right hand extreme displays the same except for: valuator[0]=1679 So the valuator[0] seems to be the x-coordinate of the pointer and the range of motion 480-1679 is indeed about five sixths of the display width (1440). valuator[1] is suspiciously large given the display height is 900. Perhaps this is a side-effect of having previously been using a dual monitor (although booting with that monitor connected does not help). There are other entries listed under xinput list: Virtual core XTEST pointer which seems stuck at position (840,1050). bcm5974 which seems stuck at position (837,6700). Removing the bcm5974 module using rmmod disables the toucpad as expected but does not fix the USB mouse problem. After adding the module back, it is stuck at position (840,1050) instead of (837,6700). /etc/X11/xorg.conf was generated by nvidia-settings and contains: Section "InputDevice" # generated from default Identifier "Mouse0" Driver "mouse" Option "Protocol" "auto" Option "Device" "/dev/psaux" Option "ZAxisMapping" "4 5" although I don't know how plausible these settings are. Any suggestions?

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• accessing files on a shared folder via IIS

  - by Darkcat Studios

  Im not sure if this suits stackexchange, serverfault or here... so i'll go with here for a start. I'm having issues setting up a network share to be accessed by IIS, all I need to do is read/write files on the Other server. We have 2 servers set up (Both 2008 R2 & IIS 7.5), one is the WEB server, which is externally accessible and NOT part of the domain. We also have an Intranet server which has no internet connectivity and is part of the domain. These 2 servers can talk to each other happily, I have the SQL server on the WEB server shared across to the intranet server so that the web content is editable from the intranet. I can share a folder on the web server (say, wwwroot/Images/) and connect to it from the intranet server, even have it as a mapped drive (but i know thats not going to work for IIS to access it), So there seems not to be a connectivity issue. I can also set up a Virtual folder in IIS on the Intranet server - this is where it gets annoying - I cant connect using pass-through authentication because there is no suitable user on the web server (which is not on the domain). If i set up a user on the web server, eg Intranet_USR, and give it appropriate rights to the folder, files and share, i can connect, but only view folder contents in IIS, not read, although that user has read privileges!! Any help much appreciated!

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• Hosting and scaling a Facebook application in the cloud? [migrated]

  - by DhruvPathak

  We would be building a Facebook application in Django (Python), but still not sure of where to host it economically, and with a good provision to scale in case the app gets viral. Some details about the app: Would be HTML based like a website,using django as a framework. 100K is the number of expected pageviews in a day, if the app is viral. The users will not generate any media content, only some database data will be generated by them. It would be great if someone with more experience can guide on following points: A) Hosting on Google app engine or Amazon EC2 or some other cloud like RackSpace : Preferable points found in AppEngine were ease of deployment, cost effectiveness and easy scaling. For EC2: Full hold of the virtual machine,Amazon NoSQL and RDMBS database services in case we decide to use them. B) Does backend technology affect monthly cost? eg. would CPU and memory usage difference of Django over , for example , PHP framework like CodeIgnitor really make remarkable difference in running costs. (Here is the article that triggered this thought process : http://journal.dedasys.com/2010/01/12/rough-estimates-of-the-dollar-cost-of-scaling-web-platforms-part-i#comments) C) Does something like Heroku , which provides additional services over Amazon EC2, prove to be better than raw cloud management? It is not that we are trying for premature scaling, we just want to have a good start so that we are ready to handle unpredicted growth and scale.

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• ADF & Fusion Development Webcast–December 11th 2012

  - by JuergenKress

  Get up to date and learn everything you wanted to know about Oracle ADF & Fusion Development plus live Q&A chats with Oracle technical staff. Oracle Application Development Framework (ADF) is the standards based, strategic framework for Oracle Fusion Applications and Oracle Fusion Middleware. Oracle ADF's integration with the Oracle SOA Suite, Oracle WebCenter and Oracle BI creates a complete productive development platform for your custom applications. Join us at this FREE virtual event and learn the latest in Fusion Development including: Is Oracle ADF development faster and simpler than Forms, Apex or .Net? Mobile Application Development with ADF Mobile Oracle ADF development with Eclipse Oracle WebCenter Portal and ADF Development Application Lifecycle Management with ADF Building Process Centric Applications with ADF and BPM Oracle Business Intelligence and ADF Integration Live Q&A chats with Oracle technical staff Developer lead, manager or architect – this event has something for everyone. Don't miss this opportunity. For details and registration please click here. View Session Abstracts We look forward to welcoming you at this free event! December 11th, 2012 9:00 – 13:00 GMT & 10:00 – 14:00 CET & 12:00 – 16:00 AST & 13:00 – 17:00 MSK & 14:30 – 18:30 IST 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. BlogTwitterLinkedInMixForumWiki Technorati Tags: ADF,ADF training,Fusion Developer day,webcast,WebLogic Specialization,WebLogic Community,Oracle,OPN,Jürgen Kress

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• No sound after upgrading to Ubuntu 11.10 from win7

  - by Tilman

  just as a prefix to my question, i'd like to note that i'm just now entering the world of Linux (unless you count my android, but that's a very different experience...) i have two computers now that run Ubuntu 11.10, the first of which i've had very little problems with, aside from figuring out the basics. the second, from which i'm writing this question, has (up to this point) only had one problem.... no sound. i've read a couple questions similiar and found little help as the component catalog doesn't have my computer listed. (in fact i'm not suprised this is a pos i had my mom grab from her work before they officially closed the doors behind them) had perfect sound before hand, and no sound now. sudo lspci -v brings up 00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 01) Subsystem: Intel Corporation Device d608 Flags: bus master, fast devsel, latency 0, IRQ 45 Memory at ff980000 (64-bit, non-prefetchable) [size=16K] Capabilities: [50] Power Management version 2 Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00 Capabilities: [100] Virtual Channel Capabilities: [130] Root Complex Link Kernel driver in use: HDA Intel Kernel modules: snd-hda-intel any help would be greatly appreciated, me and my gf just wanna watch a damn movie lol

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• In virtualbox, I can't access the dvd drive to install a guest host

  - by user211062

  I have installed a fresh copy of Ubuntu Server 12.04 and VirtualBox 4.3. I have set up a VM called "MediaServer" and tried to start it. I then get the following error: Cannot open host device '/dev/sr0' for readonly access. Check the permissions of that device ('/bin/ls -l /dev/sr0'): Most probably you need to be member of the device group. Make sure that you logout/login after changing the group settings of the current user (VERR_ACCESS_DENIED) I have looked all over the Internet and have been unable to find a solution. Using Webmin, I tried changing the group settings so that my user name was in the "vboxusers" group, but that did not work either. I tried various other changes in group settings and none of them worked. Also, I tried rebooting the server after the changes and that didn't work either. I have been following a guide on how to set up an Ubuntu server from the website "linuxhomeserverguide.com" and when it came to the section where you could finally set up your first virtual machine, I am stumped. I would really appreciate it if someone could help me. Thanks in advance.

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