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  • How to implement Facebook leaderboard game for mobile?

    - by TrueGrime
    I am in the final stages of developing an indie C# mobile game that I will deploy to iPhones and Androids using Mono. I wish to add push notifications and a Facebook leader board feature into the game, such that the user will be presented with a list of all his/her friends that are playing the game and their weekly scores in the main screen. I have ZERO experience with web development/networking/databases. I recently started researching the field and formed a basic understanding. Facebook has SDKs in PHP, JavaScript, obj-c and java, tho reading the documentation examples still feels cryptic to me since it involves web/server tech. After researching some more, I understood that my options for server side are basically PHP or ASP.Net. It seems that ASP.Net is more favorable in my case since I am already proficient with C# (but there is no ASP.net SDK from Facebook... I am not sure if this implies that I cant interact with Facebook using ASP.Net). On the down side some have mentioned higher costs for ASP.Net, tho I havent looked further into that aspect yet. I also understood that JavaScript is client side technology. I started going through tutorials of ASP.Net, I was thinking that ASP.Net is a purely server side management language, but it started feeling more like WPF as those tutorials started getting into very lengthy discussions about creating website interfaces and styles. I am not interested in that, I just want to have a web server which my app can somehow communicate with and get friends/scores. Am I learning the right technologies for my goal? should I be learning something else? I am posting this in hopes that someone who knows this field well can see through my problem and help guide me, otherwise I could spend months studying something that might not be the right solution to my goal. Thanks.

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  • Is meta description still relevant?

    - by Jeff Atwood
    I received this bit of advice about the meta description tag recently: Meta descriptions are used by Google probably 80% of the time for the snippet. They don’t help with rankings but you should probably use them. You could just auto generate them from the first part of the question. The description tag exists in the header, like so: <meta name="Description" content="A brief summary of the content on the page."> I'm not sure why we would need this field, as Google seems perfectly capable of showing the relevant search terms in context in the search result pages, like so (I searched for c# list performance): In other words, where would a meta description summary improve these results? We want the page to show context around the actual search hits, not a random summary we inserted! Google Webmaster Central has this advice: For some sites, like news media sources, generating an accurate and unique description for each page is easy: since each article is hand-written, it takes minimal effort to also add a one-sentence description. For larger database-driven sites, like product aggregators, hand-written descriptions are more difficult. In the latter case, though, programmatic generation of the descriptions can be appropriate and is encouraged -- just make sure that your descriptions are not "spammy." Good descriptions are human-readable and diverse, as we talked about in the first point above. The page-specific data we mentioned in the second point is a good candidate for programmatic generation. I'm struggling to think of any scenario when I would want the Google-generated summary, that is, actual context from the page for the search terms, to be replaced by a hard-coded meta description summary of the question itself.

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  • FIX: Visual Studio Post Build Event Returns &ndash;1 when it should not.

    - by ChrisD
    I had written a Console Application that I run as part of my post build for other projects..  The Console application logs a series of messages to the console as it executes.  I use the Environment.ExitCode value to specify an error or success condition.  When the application executes without issue, the ExitCode is 0, when there is a problem its –1. As part of my logging, I log the value of the exit code right before the application terminates.  When I run this executable from the command line, it behaves as it should; error scenarios return –1 and success scenarios return 0.   When I run the same command line as part of the post-build event, Visual Studio reports the exit code as –1, even when the application reports the exit code as 0.   A snippet of the build output follows: Verbose: Exiting with ExitCode=0 C:\Windows\Microsoft.NET\Framework\v3.5\Microsoft.Common.targets(3397,13): error MSB3073: The command ""MGC.exe" "-TargetPath=C:\TFS\Solutions\Research\Source\Framework\Services\Identity\STS\_STSBuilder\bin\Debug\_STSBuilder.dll" C:\Windows\Microsoft.NET\Framework\v3.5\Microsoft.Common.targets(3397,13): error MSB3073:  C:\Windows\Microsoft.NET\Framework\v3.5\Microsoft.Common.targets(3397,13): error MSB3073: " exited with code -1. The Application returns a 0 exit code.  But visual studio is reporting an error.  Why? The answer is in the way I format my log messages.  Apparently Visual Studio watches the messages that get streamed to the the output console.  If those messages match a pattern used by visual studio to communicate errors, Visual Studio assumes an error has occurred in the executable and returns a –1.  This post details the formats used by Visual Studio to determine error conditions. In my case, the presence of the colon was tripping up Visual studio.  I Replaced all occurrences of colon with an equal sign and Visual Studio once again respected the exit code of the application. Verbose= Exiting with ExitCode=0 ========== Build: 3 succeeded or up-to-date, 0 failed, 0 skipped ==========

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  • Partimage and autocheck problem when restoring Windows XP from image

    - by Xolstice
    I'm trying to create an image of Windows XP and clone it to several partitions on the same hard drive using Partimage. I seem to be running into a problem when I restore the image onto another partition - when I boot into the OS from the partition I just restored, it brings up this message during the boot sequence: autochk program not found - skipping autocheck, and then after this, the OS reboots the PC and the whole process repeats itself in an infinite loop. After doing some Google search, it is suggested that this loop was caused by the partition being hidden or the mountmgr.sys file is missing. I checked my configuration and verified that this was not the case. I'm just wondering: Has anyone else experienced this and is there a solution for it? Is this what happens when you try to restore the image to a different partition on the same hard disk or is Partimage itself the problem? Should I be trying out a different partition cloning software?

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  • Edge Detection on Screen

    - by user2056745
    I have a edge collision problem with a simple game that i am developing. Its about throwing a coin across the screen. I am using the code below to detect edge collisions so i can make the coin bounce from the edges of the screen. Everything works as i want except one case. When the coin hits left edge and goes to right edge the system doesnt detect the collision. The rest cases are working perfectly, like hitting the right edge first and then the left edge. Can someone suggest a solution for it? public void onMove(float dx, float dy) { coinX += dx; coinY += dy; if (coinX > rightBorder) { coinX = ((rightBorder - coinX) / 3) + rightBorder; } if (coinX < leftBorder) { coinX = -(coinX) / 3; } if (coinY > bottomBorder) { coinY = ((bottomBorder - coinY) / 3) + bottomBorder; } invalidate(); }

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  • Default Window Size

    - by muntoo
    I'm running Vista Home Premium 32-Bit, though I doubt that matters, in this case. So, how do you set the default windows size? Is there a registry tweak for this? Going to Tools->Folder Options...->View Apply to Folders or Reset Folders doesn't work. So, whenever I open a new window to a random new folder I haven't opened before, I don't want it to take 75% of the screen. Is there any way I could make it open smaller?

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  • Mapping drives on MacOSX (Leopard/Snow Leopard) permanently inside LAN

    - by Shyam
    Hi, How do I "map" shared folders on a Mac, permanently? With map, I do not mean 'connect', but permanently add it to the system so it exists after reboot. Since workstations tend to shutdown, I wonder also the symptoms and cures in case that happens. In Linux, this can be done using the fstab file, but I noticed that volumes are mounted in a different structure than Linux. I need this to backup some workstations, doing a recursive job over a single directory, that should contain the shared folders. I use Terminal to access the main system, so by preference, the solution would be nice that works within a bash shell vs GUI. I can access all folders in Finder. Thanks!

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  • Clients not recognizing secondary LDAP groups?

    - by Nick
    I'm having an issue where users who are members of secondary groups in LDAP are not being recognized as members of that group by the client. In this case, user jdoe is not being recognized as a member of the projects group. On the client, getent group shows: projects:*:20001:1001,1002,1003,1004,1005,1006 and getent passwd shows: jdoe:x:1003:10003:John Doe:/home/jdoe:/bin/bash But if I log in to the client as jdoe, and run id, I get: uid=1003(jdoe) gid=10003(jdoe) groups=24(cdrom),25(floppy),29(audio),44(video),46(plugdev),10003(jdoe) It recognizes jdoe's primary group, and the secondary groups that are appended by the client to all LDAP users, but the LDAP secondary groups are not in the list. We can see that jdoe's id is in the projects group, so why is the projects group not showing when jdoe runs the id command? The group objects are basic posixGroup entries, with a memberUid attribute for each of its members. We are using OpenLDAP on Ubuntu 10.04 server and clients.

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  • Differences in memory consumption between two identical D7 sites?

    - by aendrew
    I'm running Drupal on a news site that has a lot of different View blocks on the front page (~5 total, all cached). In trying to reduce the memory footprint of the site, I've checked out source from SVN to a local development install to try and convert some of those blocks into more optimized code. Here's the weird thing. Devel module lists memory consumption at 50mb on the Production site (Running Nginx, PHP 5.2.17, XCache and Zend Optimizer.) but only 14mb on my development site (Running Apache2, PHP 5.2.13 and XCache). These are nearly-identical versions of the same site — frankly, the Production site should use even less memory as I've disabled some of the modules running on the Dev site. Any idea why this might be the case?

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  • Naming conventions: camelCase versus underscore_case ? what are your thoughts about it? [closed]

    - by poelinca
    I've been using underscore_case for about 2 years and I recently switched to camelCase because of the new job (been using the later one for about 2 months and I still think underscore_case is better suited for large projects where there are alot of programmers involved, mainly because the code is easier to read). Now everybody at work uses camelCase because (so they say) the code looks more elegant . What are you're thoughts about camelCase or underscore_case p.s. please excuse my bad english Edit Some update first: platform used is PHP (but I'm not expecting strict PHP platform related answers , anybody can share their thoughts on which would be the best to use , that's why I came here in the first place) I use camelCase just as everibody else in the team (just as most of you recomend) we use Zend Framework which also recommends camelCase Some examples (related to PHP) : Codeigniter framework recommends underscore_case , and honestly the code is easier to read . ZF recomends camelCase and I'm not the only one who thinks ZF code is a tad harder to follow through. So my question would be rephrased: Let's take a case where you have the platform Foo which doesn't recommend any naming conventions and it's the team leader's choice to pick one. You are that team leader, why would you pick camelCase or why underscore_case? p.s. thanks everybody for the prompt answers so far

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  • Installing 12.04 within 11.04

    - by user288752
    I recently installed 11.04 from an installation disk (overwriting Windows in the process). I know 11.04 is no longer supported but I had no problems subsequently upgrading it to 12.04 (via 11.10) a couple of months ago on another device. This time though, things are different. I can't upgrade through update manager because Ubuntu then tells me I have no internet connection, which is (obviously incorrect). I have tried to circumvent the problem by downloading the 12:04 iso from ubuntu.com directly but now I'm troubled by something else. The download is succesfull but after mounting the iso I can't interact with it. When I try to access the Wubi it gives me the following message: Archive: /home/lars/.cache/.fr-7g75Fe/wubi.exe [/home/lars/.cache/.fr-7g75Fe/wubi.exe] End-of-central-directory signature not found. Either this file is not a zipfile, or it constitutes one disk of a multi-part archive. In the latter case the central directory and zipfile comment will be found on the last disk(s) of this archive. zipinfo: cannot find zipfile directory in one of /home/lars/.cache/.fr-7g75Fe/wubi.exe or /home/lars/.cache/.fr-7g75Fe/wubi.exe.zip, and cannot find /home/lars/.cache/.fr-7g75Fe/wubi.exe.ZIP, period. What am I doing wrong here?

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  • Move the Status Bar Web Address Display to the Address Bar

    - by Asian Angel
    Is the ability to see the addresses for weblinks the only reason that you keep the Status Bar visible? Now you can hide the Status Bar and move that address display to the Address Bar in Firefox. Before Here is the normal “Status Bar” address display for the weblink we were hovering the mouse over in our browser. That is nice but if you really prefer to keep the “Status Bar” hidden what do you do? Move that display to a better (and definitely more convenient) location. After Once you have the extension installed that is all there is to it…you are ready to go. Notice the address display in “Address Bar”. That is definitely looking nice. Just for fun we temporarily left the “Status Bar” visible as a demonstration while hovering over the link. And then with the “Status Bar” totally disabled…more screen real-estate is always a good thing. Note: The Status Address Bar extension does not show the original address behind shortened URLs. Conclusion If you are looking for an alternate way to see the address behind weblinks and acquire more screen real-estate, then the Status Bar extension will be a wonderful addition to your Firefox Browser. Links Download the Status Address Bar extension (Mozilla Add-ons) Similar Articles Productive Geek Tips Clear the Auto-Complete Email Address Cache in OutlookFind Out a Website’s Actual Location with FlagfoxView Website Domain Names Clearly with Locationbar2Switch MySQL to listen on TCPSave 15 Keystrokes – Use Ctrl+Enter to Complete URL TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 Awe inspiring, inter-galactic theme (Win 7) Case Study – How to Optimize Popular Wordpress Sites Restore Hidden Updates in Windows 7 & Vista Iceland an Insurance Job? Find Downloads and Add-ins for Outlook Recycle !

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  • How to prevent hard drive from spinning down Windows 7?

    - by JL.
    I had a Western Digital External 1TB drive, which I was accessing via USB. I decided one day, that I would prefer to mount the HDD in my case, and access it via SATA interface. So I took it apart, and the actual mounting was a breeze. The only thing is, I think the device has some default power saving features, which means the device tends to stop spinning when idle for (x) amount of time. This creates delays when I am accessing the HDD. Is there anyway I can turn off these power saving features for this HDD?

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  • SQL 2008 Mirroring, how to failover from the mirror database?

    - by Luis
    I have configured a database mirroring setup in SQL 2008 using the High-safety, Synchronous mode, without automatic failover. I don't have a Witness instance. Regarding high availability, I understand Mirroring is a better strategy than Log Shipping (faster and smoother failover), and cheaper than Clustering (because of license and hardware costs). According to the MS docs, to do the failover you need to access to the Principal database and in the "Mirror" options click the "Failover" button. But I want to do this from the Mirror database, because what would be the benefit as all this setup is being done in case the Principal server knocks down? Evidently I am missing something. If Mirroring is not a solution for server downtime (as would be Clustering, if I understand correctly), then which practical (i.e. real world examples) cases would benefit from Mirroring for high-availability purposes? Thank you very much for your response! I really need some enlightment.

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  • Gre tunnel Linux Cisco

    - by mezgani
    I've created a GRE tunnel between LAN A and LAN B. LAN A is behind a router, and LAN B is behind a Linux box and this box has a pppoe interface. When i do tcpdump on Linux box i see that the traffic is routerd to Linux box (tunnel end), so my need is routing the tunnel traffic to internet. I've added these rules to my iptables script, and i stay unable to connect to internet from LAN A Permitting Linux to act as router (necessary to forward packets) echo "1" /proc/sys/net/ipv4/ip_forward iptables -A INPUT -p 47 -j ACCEPT iptables -A FORWARD -i ppp0 -j ACCEPT iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT iptables -t nat -A POSTROUTING -o gre0 -j MASEQUARADE What i've forgot to set in this case?

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  • IIS reveals internal IP address in content-location field - fix

    - by saille
    Referring: http://support.microsoft.com/kb/q218180/, there is a known issue in IIS4/5/6 whereby it will reveal the internal IP of a web server in the content-location field of the HTTP header. We have IIS 6. I have tried the fix suggested, but it has not worked. The website is configured to send all requests to ASP.NET, and I am wondering if this is why the fix, which addresses IIS configuration, has not worked for us. If this is the case, how would we fix this in ASP.NET? We need to fix this issue in order to pass a security audit.

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  • the right way to do deployment with capistrano

    - by com
    I look for good practices for deploying with capistrano. I would like to start out with a short description how I used to do deployment. capistrano is installed locally on a developer's computer. I deploy thought gateway with capistrano option :gateway. Firstly, I thought that with :gateway option I need to have ssh connection only to gateway host, but it turns out that I need ssh connection (public key) to all hosts where I want to deploy to. I would like to find a convenient and secure way to deploy application. For example, in case when new developer starts working, is much more convinient to put his *public_key* only on gateway server and not on all applications servers. On the other hand I don't want him to have any connection to servers in particular ssh to gateway, just because he is developer, he needs to do only deployments. If you are aware of good practices for deploying with capistrano, please, let us know.

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  • My Windows 8 computer does not come out of Standby

    - by Jikag
    My computer will not come out out of standby. It has had this issue ever since I bought it ~4 years ago. When I purchased it, It came with Vista, I have since upgraded it to 7 and now 8 Pro, each time hoping that it would fix the problem, each time finding that it did not. My computer is an HP Pavilion Model #: m9500y. The computer goes into standby, but does not come out of it properly. If Hybrid sleep in on, it does not respond at all. If Hybrid sleep is off, It comes out and I can see the desktop for a bit, but then the screen goes black again and I have to reboot. I have tried Running a sfc, and a chkdsk in case it's a corrupted file, but it hasn't helped. This isn't too serious an issue because I can just shutdown my computer and turn it on the old fashioned way, but it is annoying and I would appreciate some advice going forward as I'm currently stumped.

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  • mpirun -np N, what if N is larger than my core number?

    - by Daniel
    Say I have a 4-core workstation, what would linux (Ubuntu) do if I execute mpirun -np 9 XXX Q1. Will 9 run immediately together, or they will run 4 after 4? Q2. I suppose that using 9 is not good, because the remainder 1, it will make the computer confused, (I don't know is it going to be confused at all, or the "head" of the computer will decide which core among the 4 cores will be used?) Or it will be randomly picked. Who decide which one core to call? Q3. If I feel my cpu is not bad and my ram is okay and large enough, and my case is not very big. Is it a good idea in order to fully use my cpu and ram, that I do mpirun -np 8 XXX, or even mpirun -np 12 XXX. Q4. Who decides all of these effciency optimization, Ubuntu, or linux, or motherboard or cpu? Your enlightenment would be really appreciated.

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  • Disabling a touchpad in Windows

    - by Shamaoke
    I want to permanently disable a touchpad in Windows running on my laptop, since firstly, I use a mouse, and secondly, when I work, I often touch it accidentally what causes definite inconviniences. I tried the following approaches to disable it but with no result: Turned it off through BIOS — there's no such function there; Turned it off through the touchpad configuration utility — there's no such function there; Turned it off through the device manager — the disable button is inactive; Turned it off through a hotkey (Fn + F1 in my case) — the hotkey doesn't work; Uninstalled the proprietary driver — Windows automatically downloaded the standard driver; Uninstalled the standard driver and turned off the automatic driver download function (Win + R ? "systempropertiesadvanced" ? Hardware ? Device Installation Settings) — all the same, Windows downloaded and installed the driver. How can I disable a touchpad? Windows 7; the Alps touchpad.

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  • Generating Normal map from a Image with a given Albedo map

    - by snape
    I am working on a research problem part of which involves generating normal map from a given image of a rusted object. I searched the internet for techniques to achieve the above and apparently crazybump is mentioned a lot. I tried it but it didn't produce the desirable effects. Also I am looking for a method which draws inspiration from an existing research paper not some closed source software. I turned my attention to the technique described in the this paper. Results from this technique are satisfactory for normal objects because of bias in the training data but it doesn't work very well in the case of rusted objects. After this I focussed my attention on generating Albedo map (the above problem would become more solvable if Albedo map is obtained). Fortunately I am able to generate pretty good albedo maps for images of rusted objects. I used this paper's approach to generate Albedo maps. Now I want to know a good technique to get Normal map given an image and it's corresponding Albedo map. To give you an idea of what kind of images I am working with I am attaching a sample. Links to research material would be really appreciated. Thanks!

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  • LINQ: Single vs. SingleOrDefault

    - by Paulo Morgado
    Like all other LINQ API methods that extract a scalar value from a sequence, Single has a companion SingleOrDefault. The documentation of SingleOrDefault states that it returns a single, specific element of a sequence of values, or a default value if no such element is found, although, in my opinion, it should state that it returns a single, specific element of a sequence of values, or a default value if no such element is found. Nevertheless, what this method does is return the default value of the source type if the sequence is empty or, like Single, throws an exception if the sequence has more than one element. I received several comments to my last post saying that SingleOrDefault could be used to avoid an exception. Well, it only “solves” half of the “problem”. If the sequence has more than one element, an exception will be thrown anyway. In the end, it all comes down to semantics and intent. If it is expected that the sequence may have none or one element, than SingleOrDefault should be used. If it’s not expect that the sequence is empty and the sequence is empty, than it’s an exceptional situation and an exception should be thrown right there. And, in that case, why not use Single instead? In my opinion, when a failure occurs, it’s best to fail fast and early than slow and late. Other methods in the LINQ API that use the same companion pattern are: ElementAt/ElementAtOrDefault, First/FirstOrDefault and Last/LastOrDefault.

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  • Why class 'SQLiteDatabase' is not found in /var/www/*.php?

    - by Roman
    I am trying to use sqlite from PHP. I have the following simple code: <?php $db = new SQLiteDatabase("test2.sdb"); unset($db); ?> As the result of this code (which I execute in the command line "php test2.php") I get: Fatal error: Class 'SQLiteDatabase' not found in /var/www/test2.php on line 3 Does anybody know how can I make PHP able to use sqlite? P.S. Here I found out that "SQLite support is enabled by default on a standard Linux PHP compilation starting with PHP 5.0." And I have "PHP Version = 5.2.6-2ubuntu4.6". So, sqlite should be enabled unless the "--disable-sqlite". In my case output of "phpinfo();" does not contain "sqlite" at all.

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  • OEPE with ADF binding support available: Total Eclipse

    - by Frank Nimphius
    The current release of Oracle Enterprise Pack for Eclipse, though in technology preview, brings Oracle ADF binding to the Eclipse IDE. You can download the Software from the link below: Oracle Enterprise Pack for Eclipse (12.1.1.1.0) Technical Preview New June 2012 Certified on Windows 7/XP/Vista, MacOS, and Linux. Supported on JDK 6. For many Eclipse users, ADF is new and therefore I expect them to need guidance and help in case they run into issues they don't know how to recover from. Similar, ADF users familiar with Oracle JDeveloper that want to give OEPE a try, will find things different in Eclipse and thus may have questions.  For both audiences I suggest to post issues to the OEPE forum on the Oracle Technology Network: I'll extend my OTN monitoring to include the OEPE forum on a daily basis to learn about developer needs, requirements and - of course - to catch bugs that need to be filed. From my side this is a part-time involvement, which means that the more ADF questions show on the forum, the more help I could need in answering them. The OTN forum for JDeveloper in my opnion wouldn't be the right place to go to unless the question is a generic ADF question that is not dependent on the integration in Eclipse. Here's the OEPE forum link for a start https://forums.oracle.com/forums/forum.jspa?forumID=578 Frank

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  • Instructor Insight: Using the Container Database in Oracle Database 12 c

    - by Breanne Cooley
    The first time I examined the Oracle Database 12c architecture, I wasn’t quite sure what I thought about the Container Database (CDB). In the current release of the Oracle RDBMS, the administrator now has a choice of whether or not to employ a CDB. Bundling Databases Inside One Container In today’s IT industry, consolidation is a common challenge. With potentially hundreds of databases to manage and maintain, an administrator will require a great deal of time and resources to upgrade and patch software. Why not consider deploying a container database to streamline this activity? By “bundling” several databases together inside one container, in the form of a pluggable database, we can save on overhead process resources and CPU time. Furthermore, we can reduce the human effort required for periodically patching and maintaining the software. Minimizing Storage Most IT professionals understand the concept of storage, as in solid state or non-rotating. Let’s take one-to-many databases and “plug” them into ONE designated container database. We can minimize many redundant pieces that would otherwise require separate storage and architecture, as was the case in previous releases of the Oracle RDBMS. The data dictionary can be housed and shared in one CDB, with individual metadata content for each pluggable database. We also won’t need as many background processes either, thus reducing the overhead cost of the CPU resource. Improve Security Levels within Each Pluggable Database  We can now segregate the CDB-administrator role from that of the pluggable-database administrator as well, achieving improved security levels within each pluggable database and within the CDB. And if the administrator chooses to use the non-CDB architecture, everything is backwards compatible, too.  The bottom line: it's a good idea to at least consider using a CDB. -Christopher Andrews, Senior Principal Instructor, Oracle University

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