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• Oracle 11g Webcast Series 2

  - by Alex Blyth

  Hi allIve just updated the schedule for the second series (season?) of the Oracle DB 11g Webcasts we've been running over the past few months. We've paced ourselves a bit better this time round and are looking to touch on some core functionality, but also some non-database topics like Oracle VM & Linux and Data replication using Golden Gate and Oracle Data Integrator (ODI).As with the last series, we're running these sessions on Wednesdays at 1.30pm Australian Eastern Standard Time and barring any hiccups they will be recorded and made available for playback.Keep an eye out here and on the schedule page for more details. The first session is next week - 14th April - covering Upgrading to Oracle 11g.CheersAlex

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• Free Version of Oracle Application Development Framework (Oracle ADF)

  - by Steve Muench

  I'm very happy to finally be able to talk about this. A long time coming, the press release is finally out: Oracle Introduces Free Version of Oracle Application Development Framework New Oracle ADF Essentials Brings ADF Benefits to the Broader Developer Community Oracle ADF Essentials is a free packaging of core technologies from the Oracle Application Development Framework that can be used to develop and deploy applications that include ADF Business Components, ADF Controller, ADF Binding, and ADF Faces Rich Client Components without incurring licensing costs. Both Oracle JDeveloper and Oracle Enterprise Pack for Eclipse provide visual and declarative development experience for using it. Oracle ADF Essentials comes with specific instructions and certification for deploying applications on the open-source Glassfish server, but the license is not limited to that server. For more information and to download it (it's only 20MB), see Oracle ADF Essentials page on OTN.

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• Will unity stop being a plugin for Compiz?

  - by Murphy1138

  I ask this as with the Unity Desktop running , when I try any games with my Ubuntu 12.04.1 I get so much frame rate drop with Unity and Compiz. If I switch to Gnome-Classic which uses mutter, I get a vast boost in performance. My system is an 8 core AMD with a Nvidia 460 SE that can play anything I chuck at it in Windows and I'm using the latest Nvidia drivers, but even simple games like the humble bundle gets serious lag with Unity and the only cause of this can be compiz (what I can guess). When Steam come to Ubuntu, how will this performance loss be addressed?

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• Geotargeted subfolder questions (Portugal/Brazil and Switzerland)

  - by Lucy

  We are at the beginning of the process to get multilingual versions of a website. We will be using subfolders working off the core domain (eg mydomain.com/fr/), set the geotargeting at webmaster tools and set hreflang attribute. I would really appreciate your help with a couple of questions. 1/Portuguese: we will have a Portuguese language version of the site. Our intention is to use this to cover users in both Portugal AND Brazil. ie, we are not going to do separate folders mydomain.com/pt/ and mydomain.com/br/ Can I use 2 hreflang attributes for this language version to tell Google it covers Brazil AND Portugal? What country code to use for this subfolder? 2/Switzerland Does anyone have best practice advice how to do this? One one hand, the subfolder should be mydomain.com/ch/ but as Switzerland covers 2 language possibilities (French AND German) - what to do? thanks

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• How can one manage thousands of IF...THEN...ELSE rules?

  - by David

  I am considering building an application, which, at its core, would consist of thousands of if...then...else statements. The purpose of the application is to be able to predict how cows move around in any landscape. They are affected by things like the sun, wind, food source, sudden events etc. How can such an application be managed? I imagine that after a few hundred IF-statements, it would be as good as unpredictable how the program would react and debugging what lead to a certain reaction would mean that one would have to traverse the whole IF-statement tree every time. I have read a bit about rules engines, but I do not see how they would get around this complexity.

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• Why isn't the source code of programs shown in research papers released?

  - by Antoine

  Is there a reason why the source code of programs shown in research papers are not released ? I understand that research papers are more about the general idea of accomplishing something than implementation details, but I don't get why they don't release the code. For example, in this paper ends with: Results The human line drawing system is implemented through the Qt framework in C++ using OpenGL, and runs on a 2.00 GHz Intel dual core processor workstation without any additional hardware assistance. We can interactively draw lines while the system synthesizes the new path and texture. Do they keep the source code closed intentionally because of a monetization they intend to make with it, or because of copyright ?

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• Web services, Java EE, Spring, DB integration project ideas - maybe data mining related?

  - by saral jain

  I am a graduate Computer Science student (Data Mining and Machine Learning) and have good exposure to core Java (3 years). I have read up on a bunch of stuff on the following topics: Design patterns, Java EE Web services (SOAP and REST), Spring, and Hibernate Java Concurrency - advanced features like Task and Executors. I would now like to do a project combining this stuff -- over my free time of course -- to get a better understanding of these things and to kind of make an end to end software (to learn the best design principles etc + SVN, maven). Any good project ideas would be really appreciated. I just want to build this stuff to learn, so I don't really mind re-inventing the wheel. Also, anything related to data mining would be an added bonus as it fits with my research but is absolutely not necessary since this project is more to learn to do large scale software development.

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• Is Dell Inspiron 15R Special Edition compatible with Ubuntu?

  - by Obada Talal Abu Arisheh

  I want to buy a Dell Inspiron 15R Special Edition. On ubuntu.com, it says that Dell Inspiron 15R will work properly. But the special edition has some special issues. I will list the hardware: 3rd Generation Intel® Core™ i7-3612QM processor (6M Cache, up to 3.1 GHz) 15.6" Full High Definition (1080p) LED Display 8GB2 Dual Channel DDR3 SDRAM at 1600MHz 750GB 7200 RPM SATA Hard Drive 8X Tray Load CD/DVD Burner (Dual Layer DVD+/-R Drive) AMD Radeon™ HD 7730M 2GB Built-in Skullcandy™ stereo speakers and Waves MaxxAudio® 4 technology Will it have any problem?

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• Develop secureness first or as a later step?

  - by MattyD

  The question Do you actively think about security when coding? asks about security mindset while programming. Obviously, a developer does need to think about security while coding — SQL injection, password security, etc. However, as far as the real, fully-formed security, especially the tricky problems that may not be immediately obvious, should I be concerned with tackling these throughout the development process, or should it be a step of its own in later development? I was listening to a podcast on Security Now and they mentioned about how a lot of the of the security problems found in Flash were because when Flash was first developed it wasn't built with security in mind (because it didn't need to) — therefore Flash has major security flaws at its core. I know that no one would want to actively disagree with "think security first" as a best practice, but many companies do not follow best practices. So, what is the correct approach to balance between needing to get the product done and developing it securely?

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• Why don't research papers that mention custom software release the source code?

  - by Antoine

  Is there a reason why the source code of softwares mentioned in research papers is not released ? I understand that research papers are more about the general idea of accomplishing something than implementation details, but I don't get why they don't release the code. For example, in this paper ends with: Results The human line drawing system is implemented through the Qt framework in C++ using OpenGL, and runs on a 2.00 GHz Intel dual core processor workstation without any additional hardware assistance. We can interactively draw lines while the system synthesizes the new path and texture. Do they keep the source code closed intentionally because of a monetization they intend to make with it, or because of copyright ?

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• Is Java free/open source or it isn't?

  - by user1598390

  On November 13, 2006, Sun released much of Java as free and open source software, (FOSS), under the terms of the GNU General Public License (GPL). On May 8, 2007, Sun finished the process, making all of Java's core code available under free software/open-source distribution terms, aside from a small portion of code to which Sun did not hold the copyright. OpenJDK (Open Java Development Kit) is a free and open source implementation of the Java programming language. It is the result of an effort Sun Microsystems began in 2006. The implementation is licensed under the GNU General Public License (GNU GPL) with a linking exception. Why there are still people that say Java is not open source or free as in free speech ? Am I missing something? Is Java still privative ?

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• How to stop programs on starting from returning to log in screen?

  - by Bruce McKean

  I'm not a computer nerd but have been able to fix Ubuntu/Linux problems in the pass two years with a Google search but this on has me stumped. I upgraded to 12.04 about thirty days ago and all was well except that every time I tried to load KeePassX it would go to the login screen. I installed KeePass2 and all seemed to work. Last week I tried to load Bibble5 (Raw photo editor) and it would try to load and then back to the login screen. After a few days I gave up and downloaded Corel After Shot Pro (Corel's now owns Bibble5) and it has the same problem. Could someone please head me into the steps I need to follow to find out what is the cause. I'm interested in learning more about the Linux system how to correct any future problems thanks in advance – Bruce -Computer- Processor : 8x Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz Memory : 8155MB (1092MB used) Operating System : Ubuntu 12.04 LTS OpenGL Renderer : GeForce GT 520/PCIe/SSE2

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• Brightness issues on MSI GT683

  - by Mitu

  I'm experiencing brightness related issues on my MSI GT683 (Intel Core i5-2410M, nVidia GeForce GTX 560M, Ubuntu 12.04 LTS x64, nVidia driver version 295.40). To start with, when I open brightness settings, the slider is working incorrectly - screen is the dimmest on about 1/3 of a bar, moving it to the left side increases brightness. Next, while pressing the keyboard buttons (Fn+up, Fn+down), brightness changes incorrectly - sometimes 2 steps up/down, but sometimes it's totally irregular - ex. in order to set the lowest brightness, I have to set the maximum, then hit Fn+down, then Fn+up. (after 2 moves from 8 to 2... What's even more strange, while changing brightness from keyboard on boot and on login screen, it works perfect. Tried adding acpi related switches to GRUB, but the brightness settings wouldn't work at all. Any help appreciated.

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• Balancing game difficulty against player progression

  - by Raven Dreamer

  It seems that the current climate of games seems to cater to an obvious progression of player power, whether that means getting a bigger, more explosive gun in Halo, leveling up in an RPG, or unlocking new options in Command and Conquer 4. Yet this concept is not exclusive to video or computer games -- even in Dungeons and Dragons players can strive to acquire a +2 sword to replace the +1 weapon they've been using. Yet as a systems designer, the concept of player progression is giving me headache after headache. Should I balance around the players exact capabilities and give up on a simple linear progression? (I think ESIV:Oblivion is a good example of this) Is it better to throw the players into an "arms race" with their opponents, where if the players don't progress in an orderly manner, it is only a matter of time until gameplay is unbearably difficult? (4th Edition DnD strikes me as a good example of this) Perhaps it would make most sense to untether the core gameplay mechanics from progression at all -- give them flashier, more interesting (but not more powerful!) ways to grow?

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• Is Java free/open source or not?

  - by user1598390

  On November 13, 2006, Sun released much of Java as free and open source software, (FOSS), under the terms of the GNU General Public License (GPL). On May 8, 2007, Sun finished the process, making all of Java's core code available under free software/open-source distribution terms, aside from a small portion of code to which Sun did not hold the copyright. OpenJDK (Open Java Development Kit) is a free and open source implementation of the Java programming language. It is the result of an effort Sun Microsystems began in 2006. The implementation is licensed under the GNU General Public License (GNU GPL) with a linking exception. Why there are still people that say Java is not open source or free as in free speech ? Am I missing something? Is Java still privative ?

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• Java 8 for Tablets, Pis, and Legos at Silicon Valley JUG - 8/20/2014

  - by hinkmond

  A bunch of people attended the Silicon Valley Java Users Group meeting last night and saw Stephen Chin talk about "Java 8 for Tablets, Pis, and Legos". I was there and thought Stephen's presentation and demos were very cool as always. Here are some photos (mostly taken by Arun) from last night. See: Photos from SV JUG 8/20/2014 The most interesting combination of the topics from last night (to me at least) is to combine Lambdas from Java SE Embedded 8 with running on an embedded device like the Raspberry Pi, or even better on an i.MX6 target device with a quad-core processor. Lambdas and Embedded, now that's a cool combo... Hinkmond

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• suspend resume not working on HP dv7

  - by Emiel

  this one is driving me nuts. My HP dv7 laptop isn't resuming from suspend and hybernate. On suspend - resume it leaves me with a black screen. On hibernate it succesfully loads the images and then it hangs.... I searched through internet and tried serveral things, but nothing seems to work for this HP dv7 on Ubuntu 12.04. With 11.10 it didn't work either. Intel® Core™ i5 CPU M 450 @ 2.40GHz × 4 VESA: Intel®Ironlake Mobile Graphics 64-bit Hope someone knows where to start the search.. I'm really desperate.

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• Unable to change the launcher icon size

  - by takeshin

  After upgrading to 11.10 I can't change the launcher icon size to smaller. I've tried to change it using ccsm, like described in How can I configure Unity, but the changes take no effects (restarted, tried sudo - still big icons). In the previous version of Ubuntu this solution worked. How can I change the icon size? (BTW, how can I know which Unity (2D vd 3D) I'm running and switch between?). Edit: Looks like I'm using Unity 2D and have some problems with graphics: me@my-laptop ~ $ /usr/lib/nux/unity_support_test -p Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Error: unable to create the OpenGL context Edit 2 me@my-laptop ~ $ lspci | grep VGA 00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 18) 01:00.0 VGA compatible controller: nVidia Corporation GT218 [GeForce 310M] (rev a2)

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• Error installation of Ubuntu 12.04 LTS

  - by garu

  Attempting a new installation of Ubuntu 12.04 LTS on what was a dual boot Windows 7 and Ubuntu 12.04 LTS laptop ( Sony intel i3 core 64 bit with 500GB HDD). I followed the following procedure Install Ubuntu • has at least 4.4 GB available, is connected to the internet, download updates while installing and install this third-party are all ticked this time • I chose the Erase disk and install Ubuntu option ( since I want to have only Ubuntu 12.04 LTS operating system in my disk) Now shows The entire disk will be used • 501GB free disk I clicked the install now button. All data copied to the hard drive ( it was copied OK), askes for location, keyboared layout, and who are you. Started to install the Ubuntu 12.04 operating system. After some minutes, I got a report Installation failed, the installer encountered an unrecoverable error. A desktop session will now be run so that you may investigate the problem or try installing again. So, Please give me simple advice on how to proceed. Thank you

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• Wine: How to open a whole folder, not a single file?

  - by Boris Karl Schlein

  I am using foobar2000 under my Ubuntu with Wine since… I don't know. Now, with the new Ubuntu 12.10 release foobar2000 was not starting anymore correctly so I reinstalled it (foobar2000 1.1.15, wine 1.4). Naturally I have to set up my foobar2000 configuration from scratch but thats not a problem at all. Everything works fine except adding whole folders to the music library using the Add-button under "File-Preferences-Media Library". Problem is one can only open files with the Add-dialog but not a whole folder. Under Windows everything works fine. Editing the foobar2000 configuration file ([foobar2000-folder]/configuration/Core.cfg) by hand does not work… I also tried it with a hex editor. :( So… what can I do? Thanks. :)

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• Do Apple and Google ask for a share if custom payment is done in a free app?

  - by user1590354

  I have a multiplatform game (web/iOS/Android) in the making. In the free version the core game is still fully playable but people who choose to pay will get more social features (and no ads, of course). I was thinking that rather than having a free and a paid version for all the platforms I may release the apps just for free and if the users want more, they have to register and pay a one-time fee (through a payment gateway or PayPal). The extra content would then be available in all the clients they have access to. Theoretically, this means a better value for the players and less maintenance and headache for me (obviously I have to handle all the payment troubles myself). Does it fit into the business model of Apple/Google? Or will they still claim their share of the registration fee?

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• What would be the best way to get Apple to donate their JVM-work to OpenJDK?

  - by Thorbjørn Ravn Andersen

  It has been announced that Apple deprecates their JVM. It is a really nice piece of work giving an excellent user experience for Swing application on OS X, and it would be a pity if it just went away. As I see it the only realistic long term alternative to Apples own JVM is the OpenJDK unless Oracle chooses to take over the Apple JVM which I doubt as OS X is not a core platform for Oracle. But for this to work Apple needs to donate their enhancements to OpenJDK, and it needs to be under the GPL. They did so already with WebKit so there is precedent. What would be the best way to make them do so? Make a stackexchange poll? Get James Gosling and other high profile Java persons to say so? Email Steve Jobs? Suggestions? EDIT: Well, Apple has now promised to do so :) Shows that asking on StackExchange really MAKES A DIFFERENCE! Great!

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• runt integrated intel graphics card + nvidia pcie graphics card?

  - by Roberto

  Its days I am searching for information/help. Is this possible at all? I am running Ubuntu 11.10 on an intel core i3 530 on a intel dh55hc mainboard. I have 2 monitors attached, one on dvi and one on hdmi. I want to ad a third or eaven a fourth monitor using an additional graphics card nvidia in pcie slot. I cant get an image on all monitors at the same time. I am wondering if this is possible at all? Any ideas where I can get information about this? Thanks in advance Roberto

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• NEW CERTIFICATION: Oracle Certified Expert, Oracle Database 11g Release 2 SQL Tuning

  - by Brandye Barrington

  Oracle Certification announces the release of the new Oracle Certified Expert, Oracle Database 11g Release 2 SQL Tuning certification. This certification is designed forDevelopers, Database Administrators and SQL developers who are proficient at tuning efficient SQL statements. This certification covers topics on core elements such as: identifying and tuning inefficient SQL statements, using automatic SQL tuning, managing optimizer statistics on database objects, implementing partitioning and analyizing queries. Beta testing for the Oracle Database 11g Release 2: SQL Tuning exam (1Z1-117) is now underway and thus is available at the greatly discounted rate of $50 USD. Visit pearsonvue.com/oracle and register for exam 1Z1-117. You can get all preparation details on the Oracle Certification website, including exam objectives, number of questions, time allotments, and pricing. QUICK LINKS: Certification Track: Oracle Certified Expert, Oracle Database 11g Release 2 SQL Tuning Certification Exam: Oracle Database 11g Release 2: SQL Tuning (1Z0-117) Certification Website: About Beta Exams Register Now: Pearson VUE

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• Virtualbox will run from 32bit installation CD but not 64bit.

  - by MetaDark

  I am trying to set up Windows in Virtual Box, so I don't need to reboot in the rare occasion that I actually need it. The problem is, Virtual Box doesn't preform any errors when I insert the 32bit installation CD but when I try to use the 64bit installation; What!? I am already using the installation disc! I've checked my BIOS to see if I have SVM (AMD's version of VT) disabled and all I see is "Enabled" I have a K9N6PGM2-V2 motherboard A Triple Core AMD Athlon II A Nvdia NForce 430 integrated graphics card 4GB of RAM An 80GB IDE And a 1TB SATA I don't think the last three specifications matter but just in case XP I am pretty sure the CD isn't broken ( I am going to make sure in just a moment ), what could be the cause to this problem? Edit: The 64bit installation CD is not broken, but I found out when trying to install from the 32bit version that it's trying to upgrade, not preform a fresh install - Odd.

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