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  • Ray Tracing Shadows in deferred rendering

    - by Grieverheart
    Recently I have programmed a raytracer for fun and found it beutifully simple how shadows are created compared to a rasterizer. Now, I couldn't help but I think if it would be possible to implement somthing similar for ray tracing of shadows in a deferred renderer. The way I though this could work is after drawing to the gbuffer, in a separate pass and for each pixel to calculate rays to the lights and draw them as lines of unique color together with the geometry (with color 0). The lines will be cut-off if there is occlusion and this fact could be used in a fragment shader to calculate which rays are occluded. I guess there must be something I'm missing, for example I'm not sure how the fragment shader could save the occlusion results for each ray so that they are available for pixel at the ray's origin. Has this method been tried before, is it possible to implement it as I described and if yes what would be the drawbacks in performance of calculating shadows this way?

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  • Announcement: Oracle Solaris 11.1

    - by uwes
    On October 3rd at Oracle OpenWorld John Fowler announced Oracle Solaris 11.1 . This first update to Oracle Solaris 11 increases uptime for the Oracle Database: 8x faster database shutdown and start-up Helps DBAs find and resolve I/O issues increasing performance 1.2x Oracle RAC throughput Oracle Solaris 11.1 drives up network utilization by extending network virtualization to include Edge Virtual Bridging and Data Center Bridging that help manage network bandwidth for high priority services and applications. Learn more and share these valuable tools with your customers to encourage them to deploy Oracle Solaris 11.1 Read Press Release here Oracle Solaris 11.1 Data Sheet (PDF) What's New in Solaris 11.1 Oracle Solaris 11.1 FAQs Join the the online web event Oracle Solaris 11 Innovations for your Data Center on November 7, 2012

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  • Virtualising Windows 8 on OS X with VMware Fusion above the 8GB limit

    - by mbrit
    tl;dr - don't.VMware Fusion has an 8GB limit, so on my 16GB MacBook Pro (which is an old one with a 16GB memory upgrade), I wanted to use more than 8GB. You can fudge it my editing the .vmx file and changing the memsize value to whatever you want.However it turns out that if you do this the performance on the whole machine turns into a big. It beachballs all over the place, both in VMware and without. Constant hanging of VMware, fan running hot the whole time, etc.This is just an apocryphal view, but having spent a week and a half with it unusable and me thinking I was going to have to go back to Win7, turn it down back to using 8GB exactly seems to be working much more stably.

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  • D, Vala or Go for game development [on hold]

    - by Sheosi
    I'm looking forward to choose some compiled language for my 3D engine. The engine it's written in C++, however I would like to help coders by using a language which is good for games. I came with these three: Vala, D and Go. The engine is being made to write as less code as posible, also the "main" language it's going to be Lua so any of these will be the "advanced" one (mainly things which could affect performance or . Because of all this and the fact that I heard that Go is good for small projects I thought it would be a pretty good option, however it does not seems to be made (at least originally) for games and also some say I can have trouble with garbage collection in games. So what do you think? Do you have any experience with any of these three in games? How was it?

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  • How are minimum system requirements determined?

    - by Michael McGowan
    We've all seen countless examples of software that ships with "minimum system requirements" like the following: Windows XP/Vista/7 1GB RAM 200 MB Storage How are these generally determined? Obviously sometimes there are specific constraints (if the program takes 200 MB on disk then that is a hard requirement). Aside from those situations, many times for things like RAM or processor it turns out that more/faster is better with no hard constraint. How are these determined? Do developers just make up numbers that seem reasonable? Does QA go through some rigorous process testing various requirements until they find the lowest settings with acceptable performance? My instinct says it should be the latter but is often the former in practice.

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  • anxiety and programming [closed]

    - by user83379
    I went to the doctor for anxiety and was prescribed a small dose of lexapro to help with anxiety and sleeping better. I am cautious about taking it since this is the first time it's got bad enough for me to talk to someone and I'm concerned it may negatively impact my career as a software developer. I'm also afraid that once I start it may be difficult to come off. Does anyone on here have experience with this? Is it likely that taking lexapro would negatively affect my problem solving skills, passion for programming or job performance? Thanks for any suggestions.

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  • Is case after case in a switch efficient?

    - by RandomGuy
    Just a random question regarding switch case efficiency in case after case; is the following code (assume pseudo code): function bool isValid(String myString){ switch(myString){ case "stringA": case "stringB": case "stringC": return true; default: return false; } more efficient than this: function bool isValid(String myString){ switch(myString){ case "stringA": return true; case "stringB": return true; case "stringC": return true; default: return false; } Or is the performance equal? I'm not thinking in a specific language but if needed let's assume it's Java or C (for this case would be needed to use chars instead of strings).

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  • How do I get Flash 10.2 RC + Crystal HD for HW accelerated video to work?

    - by Gee
    I have a netbook with a N450 Atom and a BCM70012 aka Crystal HD card. On Windows 7 I can play HD flash video with very little CPU usage because of the RC of Flash 10.2. I did some reading and saw posts claiming that the Crystal HD card is finally supported by the newer Flash 10.2 RC in Ubuntu but I can't get it to work. I can confirm that flash 10.2 is loaded and used, and there's even a HW acceleration option that is enabled in the settings but performance is horrible. From what I read, the Crystal HD card is supposed to be enabled on 10.10 by default - I don't know if it is. I tried installing drivers for it in various ways but HD flash video is still a slideshow So does anyone have it working? If so, how'd you set it up?

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  • Reaching the Pinnacle of Customer Experience : Customer Concepts WebTV #2

    - by Richard Lefebvre
    The challenge has never been greater – globalization increases consumer choice and quickly converts products into mere commodities. Leading companies understand that delivering exceptional customer experiences and building brand equity are vital for success. Please join us for an exclusive Web TV broadcast to hear how companies are enriching interactions differently with their customers to drive measurable business value. Our panel of experts including customers, industry thought leaders and Oracle executives will discuss how to refine the customer experience and build a digital experience to win new clients and maximise customer retention. Register now for this pan-European interactive Web TV show on Friday, July 6 at 10 a.m. BST / 11 a.m. CET. Watch and share the teaser video  REPLAY Fusion CRM Sales - Performance Management on demand: Watch and share the teaser video and replay.

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  • Google I/O 2010 - Tips and tricks for Google Earth API and KML

    Google I/O 2010 - Tips and tricks for Google Earth API and KML Google I/O 2010 - Mapping in 3D: Tips and tricks for Google Earth API and KML Geo 201 Josh Livni, Mano Marks Google Earth and the Earth API can handle a tremendous amount of data. But you always have more. We will talk about integrating large datasets efficiently, coding for optimal performance, and taking advantage of advanced features in KML and the Earth API. For all I/O 2010 sessions, please go to code.google.com From: GoogleDevelopers Views: 14 0 ratings Time: 01:01:18 More in Science & Technology

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  • Flash video streaming choppy for Chrome, alright for Firefox

    - by Ben
    I'm using Ubuntu 12.04.1, Chrome 21 and Firefox 15. Flash player 11.2 has been installed, and I've just started using Ubuntu... yesterday. And I'm using a Lenovo T61. The problem is that it doesn't matter if it's youtube or vimeo or some other flash player, it streams fine on chrome but every 30 seconds or so, there is a pause in video playback (with audio continuing) before it catches up, skipping quite a few seconds of video. It works perfectly fine in Firefox, and I've tried disabling PepperFlash/libpepflashplayer.so in Chrome but it doesn't seem to affect the performance. Anyone know how to work around this? It's more a problem of convenience because I don't like the idea of having to switch between Chrome and Firefox just to watch videos.

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  • June Edition - Oracle Database Insider

    - by jgelhaus
    Now available.  The June edition of the Oracle Database Insider includes: NEWS June 10: Oracle CEO Larry Ellison Live on the Future of Database Performance At a live webcast on June 10 at Oracle’s headquarters, Oracle CEO Larry Ellison is expected to announce the upcoming availability of Oracle Database In-Memory, which dramatically accelerates business decision-making by processing analytical queries in memory without requiring any changes to existing applications. Read More New Study Confirms Capital Expenditure Savings with Oracle Multitenant A new study finds that Oracle Multitenant, an option of Oracle Database 12c, drives significant savings in capital expenditures by enabling the consolidation of a large number of databases on the same number or fewer hardware resources. Read More VIDEO Oracle Database 12c: Multitenant Environment with Tom Kyte Tom Kyte discusses Oracle Multitenant, followed by a demo of the multitenant architecture that includes moving a pluggable database (PDB) from one multitenant container database to another, cloning a PDB, and creating a new PDB.  and much more.

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  • Pro Google App Engine developer interview questions (with answers)

    - by WooYek
    What are good questions to determine if applicant is pro Google App Egine developer? Questions that can distinguish that someone is not an ad-hoc GAE programmer, but is really doing professional GAE development, with all areas concerned (eg. performance, transactions, async/batch data processing). Please provide answers, so an intermediate developer (such as myself :) can interview someone more experienced. Please avoid open questions. If possible please provide a link to a documentation part that's covering a topic in question. Please keep one interview question/answer per response for better reading experience and easier interview preparation.

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  • Trying to develop a game with android for cracking glasses in different dimensions

    - by user46514
    I am trying to develop a game in android where I will have to punch a hole to get through the glass but not shatter the glass completely. The glass will show up in different forms of polygons and when a hole is created by a projectile, the rest of the polygon will still remain intact.Only a polygonal opening will get created at the point of impact with the projectile. I am new at game design in android but I was thinking that I would create a random polygon shape to show in the path and then at the point where the projectile hits it, I could create a glass polygon to create a splinter effect. The rest of the part of the glass that is randomly created at the point of impact, I could further splinter it into polygons flying at different angle. since I also need to capture the bits of glasses flying off and falling down with gravity. Is my solution the best efficient one at performance of threads or is there a better solution for this glass breaking effect. Thanks Dhiren

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  • OpenGL-ES: clearing the alpha of the FrameBufferObject

    - by MrDatabase
    This question is a follow-up to Texture artifacts on iPad How does one "clear the alpha of the render texture frameBufferObject"? I've searched around here, StackOverflow and various search engines but no luck. I've tried a few things... for example calling GlClear(GL_COLOR_BUFFER_BIT) at the beginning of my render loop... but it doesn't seem to make a difference. Any help is appreciated since I'm still new to OpenGL. Cheers! p.s. I read on SO and in Apple's documentation that GlClear should always be called at the beginning of the renderLoop. Agree? Disagree? Here's where I read this: http://stackoverflow.com/questions/2538662/how-does-glclear-improve-performance

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  • Limiting Audit Exposure and Managing Risk – Q&A and Follow-Up Conversation

    - by Tanu Sood
    Thanks to all who attended the live ISACA webcast on Limiting Audit Exposure and Managing Risk with Metrics-Driven Identity Analytics. We were really fortunate to have Don Sparks from ISACA moderate the webcast featuring Stuart Lincoln, Vice President, IT P&L Client Services, BNP Paribas, North America and Neil Gandhi, Principal Product Manager, Oracle Identity Analytics. Stuart’s insights given the team’s role in providing IT for P&L Client Services and his tremendous experience in identity management and establishing sustainable compliance programs were true value-add at yesterday’s webcast. And if you are a healthcare organization looking to solve your compliance and security challenges, we recommend you join us for a live webcast on Tuesday, November 29 at 10 am PT. The webcast will feature experts from Kaiser Permanente, PricewaterhouseCoopers and Oracle and the focus of the discussion will be around the compliance challenges a healthcare organization faces and best practices for tackling those. Here are the details: Healthcare IT News Webcast: Managing Risk and Enforcing Compliance in Healthcare with Identity Analytics Tuesday, November 29, 201110:00 a.m. PT / 1:00 p.m. ET Register Today The ISACA webcast replay is now available on-demand and the slides are also available for download. Since we didn’t have time to address all the questions we received during the live Q&A portion of the webcast, we have captured responses to the remaining questions here. Please continue to provide us your feedback and insights from your experience in deploying identity compliance solutions. Q. Can you please clarify the mechanism utilized to populate the Identity Warehouse from each individual application's access management function / files? A. Oracle Identity Analytics (OIA) supports direct imports from applications. Data collection is based on Extract, Transform and Load (ETL) that eliminates the need to write connectors to different applications. Oracle Identity Analytics’ import engine supports complex entitlement feeds saved as either text files or XML. The imports can be scheduled on a periodic basis or triggered as needed. If the applications are synchronized with a user provisioning solution like Oracle Identity Manager, Oracle Identity Analytics has a seamless integration to pull in data from Oracle Identity Manager. Q.  Can you provide a short summary of the new features in your latest release of Oracle Identity Analytics? A. Oracle recently announced availability of enhanced Oracle Identity Analytics. This release focused on easing the certification process by offering risk analytics driven certification, advanced certification screens, business centric views and significant improvement in performance including 3X faster data imports, 3X faster certification campaign generation and advanced auto-certification features, that  will allow organizations to improve user productivity by up to 80%. Closed-loop risk feedback and IT policy monitoring with Oracle Identity Manager, a leading user provisioning solution, allows for more accurate certification reviews. And, OIA's improved performance enables customers to scale compliance initiatives supporting millions of user entitlements across thousands of applications, whether on premise or in the cloud, without compromising speed or integrity. Q. Will ISACA grant a CPE credit for attending this ISACA-sponsored webinar today? A. From ISACA: Hello and thank you for your interest in the 2011 ISACA Webinar Program!  Unfortunately, there are no CPEs offered for this program, archived or live.  We will be looking into the feasibility of offering them in the future.  Q. Would you be able to use this to help manage licenses for software? That is to say - could it track software that is not used by a user, thus eliminating the software license? A. OIA’s integration with Oracle Identity Manager, a leading user provisioning solution, allows organizations to detect ghost accounts or unused accounts via account reconciliation. Based on company’s policies, this could trigger an automated workflow for account deletion or asking for further investigation. Closed-loop feedback between the two solutions would then allow visibility into the complete audit trail of when the account was detected, the action taken, by whom, when and the current status. Q. We have quarterly attestations and .xls mechanisms are not working. Once the identity data is correlated in Identity Analytics, do you then automate access certification? A. OIA’s identity warehouse analyzes and correlates identity data across various resources that allows OIA to determine a user’s risk profile, who the access review request should go to, along with all the relevant access details of the user. The access certification manager gets notification on what to review, when and the relevant data is presented in a business friendly screen. Based on the result of the access certification process, actions are triggered and results recorded and archived. Access review managers have visual risk indicators that also allow them to prioritize access certification tasks and efforts. Q. How does Oracle Identity Analytics work with Cloud Security? A. For enterprises looking to build their own cloud(s), Oracle offers a set of security services that cloud developers can leverage including Oracle Identity Analytics.  For enterprises looking to manage their compliance requirements but without hosting those in-house and instead having a hosting provider offer managed Identity Management services to the organizations, Oracle Identity Analytics can be leveraged much the same way as you’d in an on-premise (within the enterprise) environment. In fact, organizations today are leveraging Oracle Identity Analytics to manage identity compliance in both these ways. Q. Would you recommend this as a cost effective solution for a smaller organization with @ 2,500 users? A. The key return-on-investment (ROI) on Oracle Identity Analytics is derived from automating compliance processes thereby eliminating administrative overhead, minimizing errors, maintaining cost- and time-effective sustainable compliance processes and minimizing audit exposures and penalties.  Of course, there are other tangible benefits that are derived from an Oracle Identity Analytics implementation as outlined in the webcast. For a quantitative analysis of your requirements and potential ROI calculation, we recommend you refer to the Forrester Study on Total Economic Impact of Oracle Identity Analytics. For an in-person discussion, please email Richard Caldwell.

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  • We're Back: I'm Here

    - by [email protected]
    After a busy Fall and Winter post-Oracle OpenWorld 2009 Oracle's Application Strategy Blog is back. More on what we've been up to shortly. Me, I'm blogging here for the first time. After nearly 6 years at Oracle working on the Oracle Fusion Middleware business I've recently joined the Oracle Applications team. For me, what's old is new again. Prior to working on applications infrastructure at Oracle...and at BEA Systems before that...I worked at PeopleSoft in a number of roles spanning Enterprise Performance Management, Supply Chain, Public Sector and Financial Services and more. Some of the acronyms are the same, there are (of course) some new ones too. But what I'm really excited about is the intersection of Enterprise Applications and Applications Infrastructure that's happening right now. "Aligning IT with Business Strategy" has been the buzzphrase for longer than we can all remember---but what I've seen over the past 5 months makes me start to believe that it's finally starting to happen.

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  • HotRockit! EclipseCon 2011

    - by yosuke.arai(at)oracle.com
    HotRockit ?????????????????????????????????????Hotspot JVM(?Sun JVM)?JRockit JVM??????????????JVM?????????????3??Santa Clara?????EclipseCon 2011?????Marcus????????????????(?????blog????????) ----- HotRockit – What to Expect from Oracle’s Converged JVM HotRockit - ???????JVM???? Oracle is converging the HotSpot and JRockit JVMs to produce a "best of breed JVM". Internally the project is sometimes referred to as the HotRockit project. There is already a large influx of ideas and solutions provided by the JRockit JVM into the Open JDK. ?????Hotspot JVM?JRockit JVM?????"???·??·????"???JVM???????????-??????"HotRockit??????"-????????JRockit JVM???OpenJDK??????????????????????????????????? Examples of improvements include: New feature????????? Better monitoring and profiling Improved performance Better ergonomics This talk will discuss what to expect from the converged JVM over the next two years, and how this will benefit the Eclipse community. ???????????????JVM??????????????????????Eclipse???????????????????????????????? ----- ??????????????????!

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  • Virtuelle Tour durch das Oracle Universum

    - by A&C Redaktion
    Die neue „Oracle Hardware Virtual Tour“ fürs iPhone und iPad ist eine animierte Entdeckungsreise zu verschiedenen Oracle Produkten: Man öffnet Gehäuse, findet diverse Komponenten, kann diese anschauen, drehen und herausfinden, wozu sie gut sind. Zu sehen und erfahren gibt es unter anderem Oracle Exadata, SPARC Systeme, Sun x86 Systeme, Sun Blade und Sun Netra Systeme. Sie alle treten mit dem Anspruch an, Rekorde in Sachen Performance zu brechen, einfach in der Handhabung zu sein, mit hoher Verfügbarkeit zu punkten und Kosten zu sparen. Ein verspieltes Feature – aber eines, das Partner im Kundenkontakt gewinnbringend einsetzen können. Die 3D-Apps laufen auf dem iPhone 3GS, dem iPad 2 oder neueren Geräten.

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  • Virtuelle Tour durch das Oracle Universum

    - by A&C Redaktion
    Die neue „Oracle Hardware Virtual Tour“ fürs iPhone und iPad ist eine animierte Entdeckungsreise zu verschiedenen Oracle Produkten: Man öffnet Gehäuse, findet diverse Komponenten, kann diese anschauen, drehen und herausfinden, wozu sie gut sind. Zu sehen und erfahren gibt es unter anderem Oracle Exadata, SPARC Systeme, Sun x86 Systeme, Sun Blade und Sun Netra Systeme. Sie alle treten mit dem Anspruch an, Rekorde in Sachen Performance zu brechen, einfach in der Handhabung zu sein, mit hoher Verfügbarkeit zu punkten und Kosten zu sparen. Ein verspieltes Feature – aber eines, das Partner im Kundenkontakt gewinnbringend einsetzen können. Die 3D-Apps laufen auf dem iPhone 3GS, dem iPad 2 oder neueren Geräten.

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  • How to install a Logitech c310 webcam?

    - by Teja
    I bought a new Logitech C310 webcam.i dont know how to install webcam on ubuntu.am trying to install this software through the terminal window. wine /media/LWS_2_0/Setup.exe but its showing as fixme:ole:TLB_ReadTypeLib Header type magic 0x00905a4d not supported. err:ole:TLB_ReadTypeLib Loading of typelib L"Z:\\media\\LWS_2_1\\MSetup.exe" failed with error 0 and its opening a window with data as "We have detected you have connected your webcam to a USB1.1 port,for the best performance and full feature set,we suggest using a USB2.0 port" I tried this all the USB ports available in my system.its showing the same error. Please tell me how to install this webcam on ubuntu 11.10. Thanx for reading.

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  • SQL Azure Data Sync

    - by kaleidoscope
    The Microsoft Sync Framework Power Pack for SQL Azure contains a series of components that improve the experience of synchronizing with SQL Azure. This includes runtime components that optimize performance and simplify the process of synchronizing with the cloud. SQL Azure Data Sync allows developers and DBA's to: · Link existing on-premises data stores to SQL Azure. · Create new applications in Windows Azure without abandoning existing on-premises applications. · Extend on-premises data to remote offices, retail stores and mobile workers via the cloud. · Take Windows Azure and SQL Azure based web application offline to provide an “Outlook like” cached-mode experience. The Microsoft Sync Framework Power Pack for SQL Azure is comprised of the following: · SqlAzureSyncProvider · Sql Azure Offline Visual Studio Plug-In · SQL Azure Data Sync Tool for SQL Server · New SQL Azure Events Automated Provisioning Geeta

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  • Enterprise Library 5.0 Released&hellip;

    - by Shawn Cicoria
    The announcement is up here: http://blogs.msdn.com/agile/archive/2010/04/20/microsoft-enterprise-library-5-0-released.aspx Some of the things on the list of what’s new & improved 1. Redesign of the configuration tool – heck, that thing looked the same since the bits were acquired from Avanade quite a while back – good to see the changes. 2. Logging performance – this is has been 1 of the areas that we all need 3. Configuration improvements: XSD enabled, intelligence (yeah!) 4. Oh, and .NET 4.0 support :)

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  • Windows Phone 7 Development &ndash; Useful Links

    - by David Turner
    Here are some excellent links for anyone developing for Windows Phone 7: J.D. Meier’s Windows Phone Developer Guidance Map – this is immense.  Also check out the Silverlight version Justin Angel’s site – some really great articles on unlocked roms, automation and Continuous Integration Windows Phone 7 Development Best Practices Wiki Jeff Blankenburg’s 31 days of Windows Phone 7 This post of Links to sample code for Windows Phone Tim Heuers blog, particularly this post of Tips and Tricks Kevin Marshall's blog, particularly the epic WP7 Development Tips Part 1 post Code Samples for Windows Phone on MSDN If you have unlocked your phone for development, then you can use the WPConnect tool to connect to the device rather than using the Zune client.  I found it useful to pin a shortcut to WPConnect in my Start Menu. The Performance Counters displayed when you debug your app on a device are useful for seeing things like frame rate and memory usage, this page on MSDN explains what the numbers mean.  Jeff Blankenburg covers this in more details on his blog I also came across this set of links to tutorials recently which looks very useful. Creating Windows Phone 7 Application and Marketplace Icons: http://expression.microsoft.com/en-us/gg317447.aspx

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  • Oracle Enterprise Manager Cloud Control 12c: Neue Features im Release 2

    - by Ralf Durben (DBA Community)
    Seit dem 14.09.2012 steht ein neues Release 2 von Oracle Enterprise Manager Cloud Control 12c zur Verfügung. Zum ersten Mal in der Geschichte von Enterprise Manager hat Oracle ein neues Release für alle Komponenten und Plattformen am gleichen Tag freigegeben. Das neue Release steht also sowohl bzgl. OMS als auch der Agenten für alle unterstützten Plattformen zur Verfügung. Damit kann das neue Release sofort für alle Umgebungen eingesetzt werden. Oracle Enterprise Manager Cloud Control 12c Release 2 trägt die Versionsnummer 12.1.0.2 und ist vor allem ein Stabilitätsrelease. Es enthält hauptsächlich Bugfixes und Performance-Verbesserungen. Es gibt aber auch einige neue Features. Der heutige Tipp zeigt die neuen Features auf.

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