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  • Oracle RDBMS Server 11gR2 Pre-Install RPM for Oracle Linux 6 has been released

    - by Lenz Grimmer
    Now that the certification of the Oracle Database 11g R2 with Oracle Linux 6 and the Unbreakable Enterprise Kernel has been announced, we are glad to announce the availability of oracle-rdbms-server-11gR2-preinstall, the Oracle RDBMS Server 11gR2 Pre-install RPM package (formerly known as oracle-validated). Designed specifically for Oracle Linux 6, this RPM aids in the installation of the Oracle Database. In order to install the Oracle Database 11g R2 on Oracle Linux 6, your system needs to meet a few prerequisites, as outlined in the Linux Installation Guides. Using the Oracle RDBMS Server 11gR2 Pre-install RPM, you can complete most of the pre-installation configuration tasks. which is now available from the Unbreakable Linux Network, or via the Oracle public yum repository. The pre-install package is available for x86_64 only. Specifically, the package: Causes the download and installation of various software packages and specific versions needed for database installation, with package dependencies resolved via yum Creates the user oracle and the groups oinstall and dba, which are the defaults used during database installation Modifies kernel parameters in /etc/sysctl.conf to change settings for shared memory, semaphores, the maximum number of file descriptors, and so on Sets hard and soft shell resource limits in /etc/security/limits.conf, such as the number of open files, the number of processes, and stack size to the minimum required based on the Oracle Database 11g Release 2 Server installation requirements Sets numa=off in the kernel boot parameters for x86_64 machines Please see the release announcement for further details and instructions. Also take a look at Ginny Henningsen's "How I Simplified Oracle Database Installation on Oracle Linux" article on the Oracle Technology Network for a general description on how to perform the installation of the Oracle Database on Oracle Linux. While the article refers to Oracle Linux 5 and the former "oracle-validated" package, the steps for Oracle Linux 6 are still very similar (we're looking into updating that article for Oracle Linux 6).

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  • How to become a more organized programmer?

    - by Ted Wong
    I am a programmer that can code. But I find that I can get thing done, but not get thing do well or like most of the open source communities do. Well, I use some of the library from git hub. I find most of the programme is well structure. Also, a read me. My question are: Is that any common file structure or naming convention in the community or this is just a matter of personal taste? How to become a more organized programmer, instead of writing code just work. But more organized that let other easy to get in your project?

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  • 2010 Goals Review

    - by andyleonard
    Introduction Earlier this year, I responded to Tim Ford's ( Blog / Twitter ) tag (in a post about 2010 Resolutions and Themeword ) with 2010 Themeword and Goals . Let's see how I did. Resolutions 1. I need to take better care of Andy. On this, I failed. I took even worse care of myself than before. I have to address this in 2011. You can help by pinging me on Twitter ( @AndyLeonard ) every day in 2011 and ask me if I've exercised today. 2. I want to continue to serve the SQL Server community in several...(read more)

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  • Oracle Enterprise Manager sessions on the last day of the Oracle Open World

    - by Anand Akela
    Hope you had a very productive Oracle Open World so far . Hopefully, many of you attended the customer appreciation event yesterday night at the Treasures Islands.   We still have many enterprise manager related sessions today on Thursday, last day of Oracle Open World 2012. Download the Oracle Enterprise Manager 12c OpenWorld schedule (PDF) Oracle Enterprise Manager Cloud Control 12c (and Private Cloud) Time Title Location 11:15 AM - 12:15 PM Application Performance Matters: Oracle Real User Experience Insight Palace Hotel - Sea Cliff 11:15 AM - 12:15 PM Advanced Management of JD Edwards EnterpriseOne with Oracle Enterprise Manager InterContinental - Grand Ballroom B 11:15 AM - 12:15 PM Spark on SPARC Servers: Enterprise-Class IaaS with Oracle Enterprise Manager 12c Moscone West - 3018 11:15 AM - 12:15 PM Pinpoint Production Applications’ Performance Bottlenecks by Using JVM Diagnostics Marriott Marquis - Golden Gate C3 11:15 AM - 12:15 PM Bringing Order to the Masses: Scalable Monitoring with Oracle Enterprise Manager 12c Moscone West - 3020 12:45 PM - 1:45 PM Improving the Performance of Oracle E-Business Suite Applications: Tips from a DBA’s Diary Moscone West - 2018 12:45 PM - 1:45 PM Advanced Management of Oracle PeopleSoft with Oracle Enterprise Manager Moscone West - 3009 12:45 PM - 1:45 PM Managing Sun Servers and Oracle Engineered Systems with Oracle Enterprise Manager Moscone West - 2000 12:45 PM - 1:45 PM Strategies for Configuring Oracle Enterprise Manager 12c in a Secure IT Environment Moscone West - 3018 12:45 PM - 1:45 PM Using Oracle Enterprise Manager 12c to Control Operational Costs Moscone South - 308 2:15 PM - 3:15 PM My Oracle Support: The Proactive 24/7 Assistant for Your Oracle Installations Moscone West - 3018 2:15 PM - 3:15 PM Functional and Load Testing Tips and Techniques for Advanced Testers Moscone South - 307 2:15 PM - 3:15 PM Oracle Enterprise Manager Deployment Best Practices Moscone South - 104 Stay Connected: Twitter | Facebook | YouTube | Linkedin | Newsletter

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  • Macbook Pro 8,1 - wireless interface not showing up

    - by Florian Margaine
    I've installed Ubuntu 11.10 on my Macbook Pro 8,1. Everything went fine and everything installs fine except for the wireless interface. I've installed the b43 module according to these instructions: https://help.ubuntu.com/community/MacBookPro8-1/Natty#Wireless I've tried compiling the module, ndiswrapper and also the last solution mentioned using this PPA: ppa:zwaldowski/ppa. With the three solutions, the module loads finely. It works smoothly. lspci shows the wireless card without problem. But there is no wireless interface. iwconfig or ifconfig both show eth0 and lo as interfaces, but no eth1 or wlan0 interface is showing up. I have no idea why, and I'm completely stuck there.

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  • How to use IBM T42 laptop's built-in Bluetooth?

    - by B. Roland
    Hello! I have an IBM ThinkPad T42 laptop, and I have some troubles with built-in bluetooth, because in Hardware Drivers, there are no drivers for it, and in Bluetooth settings, it shows, that it has no BT devices. If I plug in an USB Bluetooth adapter, I can use easily Wammu for my mobile backup. I have no setting in BIOS, to enable, or disable it(if disable wireless refers to Wi-fi, but it is enabled too). Some outputs, what the community asked from me, in the IRC: $ sudo hcitool dev Devices: $ $ cat /proc/acpi/ibm/bluetooth No file or dir $ $ sudo modprobe bluetooth $ $ rfkill list 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no $ But they couldn't solve my problems. What can I do?

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  • Permission denied after creating home partition

    - by Magnus
    I have recently created a separate home partition following this tutorial https://help.ubuntu.com/community/Partitioning/Home/Moving. Since I’m still a newbie in the Linux (struggling to learn) I felt happy when every thing seemed to work smooth. How ever, I realised after a while that I had lost all permission to my subfolders in the my home folder. I still can read/write the files placed directly in /home/magnus but I'm denied access to any of the subfolders. I just realised one more disturbing thing, probably related to home-partition story above: When I try cd ~/Music/ I get the message bash: cd: /home/magnus/Music/: Permission denied When I try: sudo cd ~/Music/ I get the result sudo: cd: command not found Seems strange that the cd command have been lost? What have I done wrong and is there a way to fix this? btw: I use Ubuntu 12.04 LTS Thanks for all the help! Magnus

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  • SQLAuthority News – #TechEdIn – TechEd India 2012 Memories and Photos

    - by pinaldave
    TechEd India 2012 was held in Bangalore last March 21 to 23, 2012. Just like every year, this event is bigger, grander and inspiring. Pinal Dave at TechEd India 2012 Family Event Every single year, TechEd is a special affair for my entire family.  Four months before the start of TechEd, I usually start to build the mental image of the event. I start to think  about various things. For the most part, what excites me most is presenting a session and meeting friends. Seriously, I start thinking about presenting my session 4 months earlier than the event!  I work on my presentation day and night. I want to make sure that what I present is accurate and that I have experienced it firsthand. My wife and my daughter also contribute to my efforts. For us, TechEd is a family event, and the two of them feel equally responsible as well. They give up their family time so I can bring out the best content for the Community. Pinal, Shaivi and Nupur at TechEd India 2012 Guinea Pigs (My Experiment Victims) I do not rehearse my session, ever. However, I test my demo almost every single day till the last moment that I have to present it already. I sometimes go over the demo more than 2-3 times a day even though the event is more than a month away. I have two “guinea pigs”: 1) Nupur Dave and 2) Vinod Kumar. When I am at home, I present my demos to my wife Nupur. At times I feel that people often backup their demo, but in my case, I have backup demo presenters. In the office during lunch time, I present the demos to Vinod. I am sure he can walk my demos easily with eyes closed. Pinal and Vinod at TechEd India 2012 My Sessions I’ve been determined to present my sessions in a real and practical manner. I prefer to present the subject that I myself would be eager to attend to and sit through if I were an audience. Just keeping that principle in mind, I have created two sessions this year. SQL Server Misconception and Resolution Pinal and Vinod at TechEd India 2012 We believe all kinds of stuff – that the earth is flat, or that the forbidden fruit is apple, or that the big bang theory explains the origin of the universe, and so many other things. Just like these, we have plenty of misconceptions in SQL Server as well. I have had this dream of co-presenting a session with Vinod Kumar for the past 3 years. I have been asking him every year if we could present a session together, but we never got it to work out, until this year came. Fortunately, we got a chance to stand on the same stage and present a single subject.  I believe that Vinod Kumar and I have an excellent synergy when we are working together. We know each other’s strengths and weakness. We know when the other person will speak and when he will keep quiet. The reason behind this synergy is that we have worked on 2 Video Learning Courses (SQL Server Indexes and SQL Server Questions and Answers) and authored 1 book (SQL Server Questions and Answers) together. Crowd Outside Session Hall This session was inspired from the “Laurel and Hardy” show so we performed a role-playing of those famous characters. We had an excellent time at the stage and, for sure, the audience had a wonderful time, too. We had an extremely large audience for this session and had a great time interacting with them. Speed Up! – Parallel Processes and Unparalleled Performance Pinal Dave at TechEd India 2012 I wanted to approach this session at level 400 and I was very determined to do so. The biggest challenge I had was that this was a total of 60 minutes of session and the audience profile was very generic. I had to present at level 100 as well at 400. I worked hard to tune up these demos. I wanted to make sure that my messages would land perfectly to the minds of the attendees, and when they walk out of the session, they could use the knowledge I shared on their servers. After the session, I felt an extreme satisfaction as I received lots of positive feedback at the event. At one point, so many people rushed towards me that I was a bit scared that the stage might break and someone would get injured. Fortunately, nothing like that happened and I was able to shake hands with everybody. Pinal Dave at TechEd India 2012 Crowd rushing to Pinal at TechEd India 2012 Networking This is one of the primary reasons many of us visit the annual TechEd event. I had a fantastic time meeting SQL Server enthusiasts. Well, it was a terrific time meeting old friends, user group members, MVPs and SQL Enthusiasts. I have taken many photographs with lots of people, but I have received a very few back. If you are reading this blog and have a photo of us at the event, would you please send it to me so I could keep it in my memory lane? SQL Track Speaker: Jacob and Pinal at TechEd India 2012 SQL Community: Pinal, Tejas, Nakul, Jacob, Balmukund, Manas, Sudeepta, Sahal at TechEd India 2012 Star Speakers: Amit and Balmukund at TechEd India 2012 TechED Rockstars: Nakul, Tejas and Pinal at TechEd India 2012 I guess TechEd is a mix of family affair and culture for me! Hamara TechEd (Our TechEd) Please tell me which photo you like the most! Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority Author Visit, SQLAuthority News, SQLServer, T SQL, Technology Tagged: TechEd, TechEdIn

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  • Kicking yourself because you missed the Oracle OpenWorld and Oracle Develop Call for Papers?

    - by charlie.berger
    Here's a great opportunity!If you missed the Oracle OpenWorld and Oracle Develop Call for Papers, here is another opportunity to submit a paper to present. Submit a paper and ask your colleagues, Oracle Mix community, friends and anyone else you know to vote for your session. As applications of data mining and predictive analytics are always interesting, your chances of getting accepted by votes is higher.  Note, only Oracle Mix members are allowed to vote. Voting is open from the end of May through June 20. For the most part, the top voted sessions will be selected for the program (although we may choose sessions in order to balance the content across the program). Please note that Oracle reserves the right to decline sessions that are not appropriate for the conference, such as subjects that are competitive in nature or sessions that cover outdated versions of products. Oracle OpenWorld and Oracle DevelopSuggest-a-Sessionhttps://mix.oracle.com/oow10/proposals FAQhttps://mix.oracle.com/oow10/faq

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  • Ms Build publishing vs Visual Studio IDE publishing

    - by reggie
    I am currently working on ms build to publish my winform application based on the environment selected (Dev or Prod). I am using Ms Build Community Task and referencing this article to achieve this purpose. I had a few theoretical doubts based on publishing application. 1) Is there any difference in publishing through the visual studio ide and msbuild? 2) What do most developers prefer to use and why? 3) What are the advantages of using MsBuild to publish an application as compared to publishing through the visual studio IDE? 4) What is faster? I am using a .net 3.5 winform application developed in Csharp and my question is pertaining to clickonce windows applications only. Please help me clear these doubts

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  • Podcast Show Notes: William Ulrich and Neal McWhorter on Business Architecture

    - by Bob Rhubart
    The latest ArchBeat podcast program features a four-part conversation with William Ulrich and Neal McWhorter, the authors of Business Architecture: The Art and Practice of Business Transformation, available from Meghan-Kiffer Press. Listen to Part 1 Bill and Neal cover the basics and discuss the effects of the lack of business architecture on organizations. Listen to Part 2 (Jan 19) What really happens to the billions of dollars annually invested in IT. Listen to Part 3 (Jan 26) Why the IT and business sides of many organizations can’t play nice. Listen to Part 4 (Feb 2) How IT architects and business architects can work together to get the ship back on course and keep it there. Connect William Ulrich Website | LinkedIn | Business Architecture Guild Neal McWhorter Website | LinkedIn | Business Architecture Group on OMG Coming Soon Bob Hensle, Director, Oracle Enterprise Architecture Group, discusses the recently launched IT Solutions from Oracle (ITSO) library of documents. Excerpts from a recent OTN Architect Community Virtual Meet-up. Stay tuned: RSS del.icio.us Tags: business architecture,enterprise architecture,arch2arch,archbeat,podcast,business transformation,oracle,oracle technology network Technorati Tags: business architecture,enterprise architecture,arch2arch,archbeat,podcast,business transformation,oracle,oracle technology network

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  • MS Grad Student Project

    - by Bernie Perez
    I'm a computer science grad student at UCLA specializing in security and/or mobile devices. I'm looking for ideas for my M.S. Project. Something with research and experimenting or testing. I have a few in mind, just wondering if the community has some good thoughts. I'm currently working on a project that deals with offload security related operations to a grid-powered/cloud server to improve battery life on phones or tablets, aka Security-Aware software on mobile devices. I might be able to expand on this for my project... but I'm open to any new types of ideas. I have another idea about secure communications with a peer-2-peer ad-hoc network, but its seems a little dull. Hope this questions is not off topic for this StackExchange. I look forward to hearing your thoughts and ideas.

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  • How to change metamode in xorg.conf so that my game in FHD will be displayed only in the external monitor?

    - by Patryk
    I would like to launch my game only in the external monitor which I have attached to my laptop with hdmi cable. This is my current xorg.conf # nvidia-xconfig: X configuration file generated by nvidia-xconfig # nvidia-xconfig: version 319.60 (buildmeister@swio-display-x64-rhel04-15) Wed Sep 25 15:17:31 PDT 2013 Section "ServerLayout" Identifier "Layout0" Screen 0 "Screen0" InputDevice "Keyboard0" "CoreKeyboard" InputDevice "Mouse0" "CorePointer" EndSection Section "Files" EndSection Section "InputDevice" # generated from default Identifier "Mouse0" Driver "mouse" Option "Protocol" "auto" Option "Device" "/dev/psaux" Option "Emulate3Buttons" "no" Option "ZAxisMapping" "4 5" EndSection Section "InputDevice" # generated from default Identifier "Keyboard0" Driver "kbd" EndSection Section "Monitor" Identifier "Monitor0" VendorName "Unknown" ModelName "Unknown" HorizSync 28.0 - 33.0 VertRefresh 43.0 - 72.0 Option "DPMS" EndSection Section "Device" Identifier "Device0" Driver "nvidia" VendorName "NVIDIA Corporation" EndSection Section "Screen" Identifier "Screen0" Device "Device0" Monitor "Monitor0" DefaultDepth 24 Option "metamodes" "1024x786,NULL;1280x720,NULL;NULL,1680x1050;NULL,1920x1080" SubSection "Display" Depth 24 EndSubSection EndSection Although with this config nothing changes (I have my game displayed in the laptop screen and exceeding a little bit onto the external monitor since I set it to be in 1920x1080) I have read this https://help.ubuntu.com/community/XineramaHowTo but with no luck of solving this issue. The only temporary solution for this problem now is to manually switch of the laptop display and then launch the game.

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  • SQL SERVER – Video – Performance Improvement in Columnstore Index

    - by pinaldave
    I earlier wrote an article about SQL SERVER – Fundamentals of Columnstore Index and it got very well accepted in community. However, one of the suggestion I keep on receiving for that article is that many of the reader wanted to see columnstore index in the action but they were not able to do that. Some of the readers did not install SQL Server 2012 or some did not have good machine to recreate the big table involved in the demo. For the same reason, I have created small video for that. I have written two more article on columstore index. Please read them as followup to the video: SQL SERVER – How to Ignore Columnstore Index Usage in Query SQL SERVER – Updating Data in A Columnstore Index Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, PostADay, SQL, SQL Authority, SQL Index, SQL Performance, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, T SQL, Technology, Video

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  • SQLAuthority News – Presenting at Virtual Tech Days TechEd Pre-Con – February 9, 2011

    - by pinaldave
    I will be presenting on following subject on Virtual Tech Days TechEd Pre-Con – February 9, 2011. Auditing Made Easy: Change Tracking and Change Data Capture Date and Time: February 9, 2011 11:45am-12:45pm Location: Online In this fast paced demo oriented session we will go over few of concept which are related to real life problem at customers. We often see developers and DBA looking for details like who has dropped the table, who has last modified any object as well what was actually modified. SQL Server 2008 has all the answers. It has various new methods for Auditing where not only you can know details about what was changed as well know who changed it as well. In addition to that we can capture way more details configuring Auditing. We can also work prevent changes if proper policy management is configured. If you have ever attended my session on this subject earlier, this is going to absolutely new session and very much demo oriented. There is going to be quiz at the end of the session and I promise that if you attend the session, you will get all the answers correct. Reference: Pinal Dave (http://blog.SQLAuthority.com)   Filed under: About Me, Pinal Dave, PostADay, SQL, SQL Authority, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, SQLAuthority News, T SQL, Technology

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  • Oracle... and InfiniBand.

    - by jenny.gelhausen
    Beginning Sunday, 14th March 2010 the OpenFabrics Alliance has been hosting its annual conference in Sonoma, California. On Monday morning, Tim Shetler - VP of Product Management at Oracle - addressed a conference room full to the brim with the industry's InfiniBand luminaries. That same afternoon, Sumanta Chatterjee, Senior Director of Development at Oracle, was publicly lauded by moderator Bill Boas for being a long-standing, pivotal driver and crucial member of the community. A testament to InfiniBand's building momentum, it is no surprise to find it at the core of Oracle's flagship product, the Sun Oracle Database Machine. var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www."); document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E")); try { var pageTracker = _gat._getTracker("UA-13185312-1"); pageTracker._trackPageview(); } catch(err) {}

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  • Coders For Charities

    Last weekend I had the opportunity to give back to the community doing what I love. As geeks we dont usually have this opportunity. The event is called Coders 4 Charities (C4C) and its a grueling weekend of coding for nearly 30 hours over the weekend. When you finish you get to present to the charity and all of the other groups what you have completed. From the site: Coders For Charities is a 3-day charity event that pairs charities and local software developers. Charities often do not have...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Scripting a sophisticated RTS AI with Lua

    - by T. Webster
    I'm planning to develop a somewhat sophisticated RTS AI (eg see BWAPI). have experience programming, but none in game development, so it seems easiest to start by scripting the AI of an existing game I've played, Warhammer 40k: Dawn of War (2004). As far as I can tell, the game AI is scripted with some variant of Lua (by the file extension .ai or .scar). The online documentation is sparse and the community isn't active anymore. I'd like to get some idea of the difficulty of this undertaking. Is it practical with a scripting language like Lua to develop a RTS AI that includes FSMs, decision trees, case-based reasoning, and transposition tables? If someone has any experience scripting Dawn of War, that would also help.

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  • Six in Six - SQL Server 2012 Webinars

    - by JustinL
    We're running six webinars over the next six months covering our experiences with SQL Server 2012 and customer deployments. I'm presenting the first on upgrading to SQL Server 2012 next month, subsequent sessions will be delivered by colleagues: NOVEMBER: SQL Server 2012 Upgrade Approach and considerations. Friday 23rd November 12:00 – 13:00 Present approaches for upgrade testing, managing risk and rollback. The session will include details on minimizing downtime and upgrading from SQL Server 2000, 2005, and 2008 including.... More details and register. DECEMBER: Delivering Mission Critical BI with SQL Server 2012– Friday 14th December 12:00-13:00 Information is the lifeblood of many organisations and the availability of timely, accurate information is critical to strategic decision making. This session covers the features and capabilities… More details and register. JANUARY: Architecting Highly Available solutions with SQL Server 2012 – Friday 18th January 12:00- 13:00 Overview and comparison of the high availability features available within SQL Server 2012. The session considers business requirements for availability and recoverability and presents a number of alternative solution designs to meet… More details and register. FEBRUARY: Private cloud deployments with SQL Server 2012 – Friday 15th February 12:00- 13:00 Cloud based technology provide cost effective scale and flexibility. This session provides an overview of the benefits organisations can realise through private cloud… More details and register. MARCH: Visualising data patterns with SQL Server 2012 – Friday 22nd March 12:00- 13:00 This webinar demonstrates the ease of delivering business insight by exploring information and identifying trends through data visualisation. SQL Server 2012 provides new capability with enhanced performance and … More details and register. APRIL: Architecting Highly Available solutions with SQL Server 2012 – Friday 26th April 12:00- 13:00 Customers are increasingly interested in leveraging the benefits of cloud based solutions to provide scalable and flexible infrastructure to host their applications. This session looks at common design patterns and workloads… More details and register. Justin Langford - Coeo Ltd SQL Server Consultants | SQL Server Remote DBA

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  • Codeur.com : plus de 550 appels d'offre ouverts en ce moment sur la première place de marché des prestataires freelances en France

    Codeur.com : plus de 550 appels d'offre ouverts en ce moment sur la 1ère place de marché des prestataires freelances en France Codeur.com est la 1ère place de marché des prestataires freelances en France. Elle compte 26.189 prestataires inscrits et plus de 21.893 appels d'offres publiés depuis sa création 2006. Comme son nom l'indique, Codeur permet de trouver, ou de proposer ses services en tant que développeur mais aussi webmaster, graphiste, référenceur, traducteur, infogérant, rédacteur, community manager et web marketeur. Tous les métiers du web sont représentés. Depuis l'année dernière : le site est gratuit pour les porteurs de projet et très abordable pour les prest...

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  • Why Does 64-Bit Windows Need a Separate “Program Files (x86)” Folder?

    - by Jason Fitzpatrick
    If you’re currently using any 64-bit version of Windows you may have noticed there are two “Program Files” folders, one for 64-bit and one for 32-bit apps. Why does Windows need to sub-divide them? Read on to see why. Today’s Question & Answer session comes to us courtesy of SuperUser—a subdivision of Stack Exchange, a community-drive grouping of Q&A web sites. Why Does 64-Bit Windows Need a Separate “Program Files (x86)” Folder? Why Your Android Phone Isn’t Getting Operating System Updates and What You Can Do About It How To Delete, Move, or Rename Locked Files in Windows

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  • New Replication, Optimizer and High Availability features in MySQL 5.6.5!

    - by Rob Young
    As the Product Manager for the MySQL database it is always great to announce when the MySQL Engineering team delivers another great product release.  As a field DBA and developer it is even better when that release contains improvements and innovation that I know will help those currently using MySQL for apps that range from modest intranet sites to the most highly trafficked web sites on the web.  That said, it is my pleasure to take my hat off to MySQL Engineering for today's release of the MySQL 5.6.5 Development Milestone Release ("DMR"). The new highlighted features in MySQL 5.6.5 are discussed here: New Self-Healing Replication ClustersThe 5.6.5 DMR improves MySQL Replication by adding Global Transaction Ids and automated utilities for self-healing Replication clusters.  Prior to 5.6.5 this has been somewhat of a pain point for MySQL users with most developing custom solutions or looking to costly, complex third-party solutions for these capabilities.  With 5.6.5 these shackles are all but removed by a solution that is included with the GPL version of the database and supporting GPL tools.  You can learn all about the details of the great, problem solving Replication features in MySQL 5.6 in Mat Keep's Developer Zone article.  New Replication Administration and Failover UtilitiesAs mentioned above, the new Replication features, Global Transaction Ids specifically, are now supported by a set of automated GPL utilities that leverage the new GTIDs to provide administration and manual or auto failover to the most up to date slave (that is the default, but user configurable if needed) in the event of a master failure. The new utilities, along with links to Engineering related blogs, are discussed in detail in the DevZone Article noted above. Better Query Optimization and ThroughputThe MySQL Optimizer team continues to amaze with the latest round of improvements in 5.6.5. Along with much refactoring of the legacy code base, the Optimizer team has improved complex query optimization and throughput by adding these functional improvements: Subquery Optimizations - Subqueries are now included in the Optimizer path for runtime optimization.  Better throughput of nested queries enables application developers to simplify and consolidate multiple queries and result sets into a single unit or work. Optimizer now uses CURRENT_TIMESTAMP as default for DATETIME columns - For simplification, this eliminates the need for application developers to assign this value when a column of this type is blank by default. Optimizations for Range based queries - Optimizer now uses ready statistics vs Index based scans for queries with multiple range values. Optimizations for queries using filesort and ORDER BY.  Optimization criteria/decision on execution method is done now at optimization vs parsing stage. Print EXPLAIN in JSON format for hierarchical readability and Enterprise tool consumption. You can learn the details about these new features as well all of the Optimizer based improvements in MySQL 5.6 by following the Optimizer team blog. You can download and try the MySQL 5.6.5 DMR here. (look under "Development Releases")  Please let us know what you think!  The new HA utilities for Replication Administration and Failover are available as part of the MySQL Workbench Community Edition, which you can download here .Also New in MySQL LabsAs has become our tradition when announcing DMRs we also like to provide "Early Access" development features to the MySQL Community via the MySQL Labs.  Today is no exception as we are also releasing the following to Labs for you to download, try and let us know your thoughts on where we need to improve:InnoDB Online OperationsMySQL 5.6 now provides Online ADD Index, FK Drop and Online Column RENAME.  These operations are non-blocking and will continue to evolve in future DMRs.  You can learn the grainy details by following John Russell's blog.InnoDB data access via Memcached API ("NotOnlySQL") - Improved refresh of an earlier feature releaseSimilar to Cluster 7.2, MySQL 5.6 provides direct NotOnlySQL access to InnoDB data via the familiar Memcached API. This provides the ultimate in flexibility for developers who need fast, simple key/value access and complex query support commingled within their applications.Improved Transactional Performance, ScaleThe InnoDB Engineering team has once again under promised and over delivered in the area of improved performance and scale.  These improvements are also included in the aggregated Spring 2012 labs release:InnoDB CPU cache performance improvements for modern, multi-core/CPU systems show great promise with internal tests showing:    2x throughput improvement for read only activity 6x throughput improvement for SELECT range Read/Write benchmarks are in progress More details on the above are available here. You can download all of the above in an aggregated "InnoDB 2012 Spring Labs Release" binary from the MySQL Labs. You can also learn more about these improvements and about related fixes to mysys mutex and hash sort by checking out the InnoDB team blog.MySQL 5.6.5 is another installment in what we believe will be the best release of the MySQL database ever.  It also serves as a shining example of how the MySQL Engineering team at Oracle leads in MySQL innovation.You can get the overall Oracle message on the MySQL 5.6.5 DMR and Early Access labs features here. As always, thanks for your continued support of MySQL, the #1 open source database on the planet!

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  • How can I improve overall system performance?

    - by Decio Lira
    What are your tips for improving overall system performance on ubuntu? Inspired by this question I realized that some default settings may be rather conservative on Ubuntu and that it's possible to tweak it with little or no risk if you wish to make it faster. This is not meant to be application specific (e.g. make firefox load pages faster), but system wide. Preferably 1 tip per answer, with enough detail for people to implement it. A couple of mine would be: Install Preload (via Software Center or sudo apt-get install preload); Change Swappiness value - "which controls the degree to which the kernel prefers to swap when it tries to free memory"; What are yours? PS: Since this is not intended to have a unique answer but rather, several useful tips, I'm making this community wiki out-of-the-box.

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  • Setting up SANED with sane-test

    - by Enoon
    I'm trying to setup a network service for running saned (running the sane-test backend) on Ubuntu 12.10, running it on a virtualbox. I followed the directions found here: https://help.ubuntu.com/community/ScanningHowTo and i got to the point where if i use a front-end like xsane, or use the command scanimage -d test i get the desired behaviour. (i get the test image). But when i try to use the network demon to access the backend (from the localhost) i get Failed to connect. I used telnet on 127.0.0.1 6566 and i got the following error: saned: symbol lookup error: saned: undefined symbol: sanei_w_init I'm a linux newbie, so i could be making some stupid mistake. Any ideas on how to fix this? Thanks [update]After posting this question i logged out, logged back in and it worked. After a few days i tried again and it gave the same error as before. Any help?

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  • Weekend Entity Framework Class in Dallas...

    - by [email protected]
    Zeeshan Nirani, MVP in the Data Programability Group, co-author of the upcoming Entity Framework Recipies book, is teaching a 6 week class on Entity Framework 4.0 at Collin Community College, beginning May 22nd. The class will meet each Saturday morning from 9 am to 1. There is probably nobody in the Metroplex area that knows the Entity Framework as initimately as Zeeshan. Go and sign-up for this course NOW and consider yourself lucky to have the opportunity to attend. You WILL learn the Entity Framework which will be CRITICAL to your success in Microsoft development, as MSFT has made this framework one of their core pieces moving forward.   Contact Zeeshan at [email protected] for more details.      

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