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  • Best practices for caching search queries

    - by David Esteves
    I am trying to improve performance of my ASP.net Web Api by adding a data cache but I am not sure how exactly to go about it as it seems to be more complex than most caching scenarios. An example is I have a table of Locations and an api to retrieve locations via search, for an autocomplete. /api/location/Londo and the query would be something like SELECT * FROM Locations WHERE Name like 'Londo%' These locations change very infrequently so I would like to cache them to prevent trips to the database for no real reason and improve the response time. Looking at caching options I am using the Windows Azure Appfabric system, the problem is it's just a key/value cache. Since I can only retrieve items based on keys I couldn't actually use it for this scenario as far as Im aware. Is what I am trying to do bad use of a caching system? Should I try looking into NoSql DB which could possibly run as a cache for something like this to improve performance? Should I just cache the entire table/collection in a single key with a specific data structure which could assist with the searching and then do the search upon retrieval of the data?

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  • Going home now :-)

    - by Mike Dietrich
    3 weeks of traveling through Asia and Australia - nearly 500 customers and partners in 8 workshops in Tokyo, Seoul, Beijing, Shenzhen, Singapore, Melbourne, Perth and Manila. Great people in all places, many interesting discussions, several new reference prospects for Oracle Database 11g Release 2 - YOU should upgrade as well pretty soon :-) But now it's time to go home. We are a bit exhausted but we really enjoyed it talking to and with you. And I'd suppose we'll meet again the sooner or later. Thanks to everybody - and special thanks to the local colleagues and especially to Abe-san, Kota-san, Blair Layton and Shaheen Ismail for taking care on us, organizing our workshops and the whole setup!!!

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  • Support for 15,000 Partitions in SQL Server 2008 SP2 and SQL Server 2008 R2 SP1

    In SQL Server 2008 and SQL Server 2008 R2, the number of partitions on tables and indexes is limited to 1,000. This paper discusses how SQL Server 2008 SP2 and SQL Server 2008 R2 SP1 address this limitation by providing an option to increase the limit to 15,000 partitions. It describes how support for 15,000 partitions can be enabled and disabled on a database. It also talks about performance characteristics, certain limitations associated with this support, known issues, and their workarounds. This support is targeted to enterprise customers and ISVs with large-scale decision support or data warehouse requirements. The Future of SQL Server MonitoringMonitor wherever, whenever with Red Gate's SQL Monitor. See it live in action now.

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  • Installing ethernet drivers with no install package

    - by Josh
    I recently got my new Sony Vaio laptop and formatted it into Windows 7 Ultimate. I would like to use the Windows Easy Transfer Tool over a network connection to transfer some of my files over from my desktop PC. Before I do this though, I need to install the ethernet LAN drivers (I'm currently using the built in Wifi). I downloaded the original LAN driver that came with my Vaio originally from the Sony website: http://support.vaio.sony.eu/computing/vaio/downloads/preinstalled/index.aspx?l=en_GB&m=VPCEB1Z0E_B [Scroll down to the 450KB Ethernet driver] When I unzip the package, these files are inside: yk62x64.cat yk62x64.dll yk62x64.inf yk62x64.sys As you can see, no installer. Can anyone guide me through how to properly install these drivers? I have thought of using Google but I'm clueless as to what query to use. Thanks.

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  • Oracle Virtualization Friday Spotlight - October 18, 2013

    - by Monica Kumar
    Opening The Oracle VM Templates Blackbox Oracle VM Templates give you the efficiency of speed and the assurance of no guess work. For those in the know, Oracle VM Guest Additions is a great way to empower you to do more interesting things with the Templates. Today’s blog article is to share the secrets with those who are not content with just treating Oracle VM Templates as a black box. Oracle VM Guest Additions is a set of packages that can be installed on the guest operating system of a virtual machine running in the Oracle VM environment. These packages provide the tools to allow bi-directional communication directly between the Oracle VM Manager and the operating system running within the virtual machine. OK here’s where the ‘power-user’ part comes in…. This gives your fine-grained control over the configuration and behavior of components running within the virtual machine directly from Oracle VM Manager. You now have the ability to see and direct what goes on inside your VM from Oracle VM Manager. Get a reporting on IP addressing Use the template configuration facility to automatically configure virtual machines as they are first started Send messages directly to a virtual machine to trigger programmed events Query a virtual machine to obtain information pertaining to previous messages Enough of the theory! To get hands-on how-to’s and talk directly with the product expert on Oracle VM Guest Additions, Robbie de Meyer, or Oracle VM Templates for Oracle Database and RAC Template expert Saar Maoz, join us for the Oct 24th live webcast. You can also read more about the Oracle VM Guest Additions in the whitepaper.

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  • Where to find Information on Software/Technologies Supported by PSRM

    - by Paula Speranza-Hadley
    People often ask where they can find informatoin about software and technologies supported by PSRM and what versions are supported.  This information can be found in the following locations: For X Path - See Script Engine Version dropdown in script Display/maintenance portal  in PSRM for three different kinds of scripts we support. Reference Document: http://docs.oracle.com/cd/E50182_01/PDF/PSRM_Quick_Install_Guide_v2_4_0_0_0.pdf For HTML/Java script -  As supported by supported browsers mentioned in Installation Guides. For information related to supported platforms(OS, Browsers, App servers and Database Servers) -  See Certified and supported Platforms section. Reference Document: http://docs.oracle.com/cd/E50182_01/PDF/PSRM_Installation_Guide_v2_4_0_0_0.pdf For Information related to Oracle client, Java, Micro Focus, Web servers  -  See Installation Checklist section. For Third Party products, copy right and licensing notices (like Apache FWs/libraries) - See License and Copyright Notices section (Appendix B).

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  • What's the format of Real World Performance Day?

    - by william.hardie
    A question that has cropped a lot of late is "what's the format of Real World Performance Day?" Not an unreasonable question you might think. Sure enough, a quick check of the Independent Oracle User Group's website tells us a bit about the Real World Performance Day event, but no formal agenda? This was one of the questions I posed to Tom Kyte (one of the main presenters) in our recent podcast. Tom tells us that this isn't your traditional event where one speaker follows another with loads of slides. In fact, the Real World Performance Day features Tom and fellow Oracle performance experts - Andrew Holdsworth and Graham Wood - continuously on stage throughout the day. All three will be discussing database performance challenges and solutions from development, architectural design and management perspectives. There's going to be multi-terabyte demos on show, less of the traditional slides, and more interactive debate and discussion going on. Tune-in and hear what else Tom has to say about this fairly unique event!

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  • Is SimplePHPBlog a secure blogging engine?

    - by authentictech
    Has anyone used the blog engine SimplePHPBlog? It is a simple blog engine that uses only text files (no database). My problem with it is that the content directory where the texts files are stored appears to require being world writeable/readable (i.e. permission 777) for it to work. This means anyone can access the text files with a browser! These text files include the blog/comment poster's IP and email address! This is not secure or good practice, right?

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  • How do I speed up XML parsing operation?

    - by absentx
    I currently have a php script set up to do some xml parsing. Sometimes the script is set as an on page include and other times it is accessed via an ajax call. The problem is the load time for this particular page is very long. I started to think that the php I had written to find what I need in the XML was written poorly and my script is very resource intense. After much research and testing the problem is indeed not my scripting (well perhaps you could consider it a problem with my scripting), but it looks like it takes a long time to load the particular xml sources. My code is like such: $source_recent = 'my xml feed'; $source_additional = 'the other feed I need'; $xmlstr_recent = file_get_contents($source_recent); $feed_recent = new SimpleXMLElement($xmlstr_recent); $xmlstr_additional = file_get_contents($source_additional); $feed_additional = new SimpleXMLElement($xmlstr_additional); In all my testing, the above code is what takes the time, not the additional processing I do below. Is there anyway around this or am I at the mercy of the load time of the xml URL's? One crazy thought I had to get around it is to load the xml contents into a db every so often, then just query the db for what I need. Thoughts? Ideas?

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  • Pathfinding and BSP with Box2D

    - by Amplify91
    I'm looking into implementing AI in my 2D side-scrolling platformer, and I'm looking into using algorithms such as A*. For many kinds of pathfinding, we need some sort of grid or systems of nodes or polygon areas. My problem is that I am using Box2d for physics and I am not sure how best to create a structure that my AI can use besides placing individual nodes manually (something I really want to avoid) and using some sort of steering behavior. My level design is tile-based with each tile being about half of the height/width of my main character. The tiles are not all square (some are sloped). I'd like to have a system that can see what the terrain looks like for pathfinding and also keep track of the positions of other actors such as enemies. I'd like to avoid directly placing any nodes into my level design except for possible endpoints or goals. This question is related: How do you do AI path following within a 2d physics engine like farseer/box2d?, but it doesn't specify what kind of structure I could use instead of a list of nodes. I'm looking for some kind of grid or type of BSP that I can query for algorithms like A*.

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  • Good PHP BOOKS for starters!

    - by Goma
    I started reading some PHP books. Most of them in their introduction say that this book , unlike other books, it follows a good habits and practices. Now, I do not know which book tells the truth, and which writer is the most experienced in PHP. These are the books that I had a quick look to their first chapter: PHP and MySQL Web Development (Developer's Library) by Luke Welling and Laura Thomson. Build Your Own Database Driven Web Site Using PHP & MySQL by Kevin Yank. PHP and MySQL for Dummies by Janet Valade. Now, it's your time to advise me and tell me about the excellent one that follows best practices, please give an advice from your experience. (It could be any other book!). Regards,

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  • Why do SNMP agents need MIB files?

    - by user1495181
    After reading up on SNMP and some of the questions help here I think understand the agent role as a SNMP service to device (Like SQL, it is an API to storage). When you execute a SQL query the SQL engine does all the work and returns the result - You don't need to be aware of how the storage and where the storage is done. But MIBs are not actual storage , so what is the role of my agent? if the agent only register the MIB like i follow in this tutorial, is it not used as handler at all? Say that I want monitor my application's pending request queue, so I want an agent that all SNMP request for application_pending_request will be fired for it and it will return the queue depth. Why do I need to have an actual MIB when all I need to poll my application queue in order to get result?

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  • Why am I unable to turn off recursion in ISC BIND?

    - by nbolton
    Here's my named.conf.options file: options { directory "/var/cache/bind"; dnssec-enable yes; auth-nxdomain no; # conform to RFC1035 listen-on-v6 { any; }; # disable recursion recursion no; }; I've tried adding allow-recursion { "none"; } before recursion but this also has no effect; I'm testing it by using nslookup on Windows, and using google.com. as the query (and it returns an IP, so I assume recursion is on). This issue occurs on two servers with similar setups.

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  • Reduce Windows DNS Service caching on Window

    - by Nick G
    I'm struggling with DNS caching issues on a Windows based LAN. I've noticed that if I change a DNS record on a domain hosted by a 3rd party nameserver, that I always seem to be the very last person to see the change happen. I can often query the domain using a service which checks propagation around the world like www.whatsmydns.net but I usually find that all other DNS servers are correct and it's only my own server which has the old IP - even 8-12 hours later. This is an issue for us as we're website developers and often making changes to DNS records so these huge delays are frustrating. It seems to be because our primary domain controller server (+Active Directory & DNS) on our LAN (which is also our local DNS server) caches records for AGES (Way beyond it's published TTL). How can I stop the Windows DNS server from caching, or reduce the caching to only an hour or so?

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  • When to use http status code 404

    - by Sybiam
    I am working on a project and after arguing with people at work for about more than a hour. I decided to know what people on stack-exchange might say. We're writing an API for a system, there is a query that should return a tree of Organization or a tree of Goals. The tree of Organization is the organization in which the user is present, In other words, this tree should always exists. In the organization, a tree of goal should be always present. (that's where the argument started). In case where the tree doesn't exist, my co-worker decided that it would be right to answer response with status code 200. And then started asking me to fix my code because the application was falling apart when there is no tree. I'll try to spare flames and fury. I suggested to raise a 404 error when there is no tree. It would at least let me know that something is wrong. When using 200, I have to add special check to my response in the success callback to handle errors. I'm expecting to receive an object, but I may actually receive an empty response because nothing is found. It sounds totally fair to mark the response as a 404. And then war started and I got the message that I didn't understand HTTP status code schema. So I'm here and asking what's wrong with 404 in this case? I even got the argument "It found nothing, so it's right to return 200". I believe that it's wrong since the tree should be always present. If we found nothing and we are expecting something, it should be a 404. Extra Also, I believe the best answer to the problem is to create default objects when organizations are created, having no tree shouldn't be a valid case and should be seen as an undefined behavior. There is no way an account can be used without both trees. For that reasons, they should be always present.

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  • Generate Multiple Choice Questions [closed]

    - by Daniel
    I'm working on a quiz application that will have a number of multiple choice questions. I'm waiting on the content from the client, but I'm hoping to start testing with some placeholder data for the time being. In order for the tests to be worthwhile, I probably need at least 100 multiple choice questions. I wanted to see if anyone knows of a resource or tool that can generate questions/multiple choice answers or propose another creative way to fill my quiz application with placeholder content. Ultimately the data will be in a MySQL database, but I don't really care what format the sample data is in (Excel, Word, JSON, etc.).

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  • How do I fix my locale issue?

    - by HackToHell
    I am getting this message everytime I do something like starting or stopping a service. perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = "en_US:en", LC_ALL = (unset), LC_MESSAGES = "en_US.UTF-8", LANG = "en_US.UTF-8" are supported and installed on your system. perl: warning: Falling back to the standard locale ("C"). locale: Cannot set LC_CTYPE to default locale: No such file or directory locale: Cannot set LC_MESSAGES to default locale: No such file or directory locale: Cannot set LC_ALL to default locale: No such file or directory (Reading database ... 21173 files and directories currently installed.) Removing bind9 ... * Stopping domain name service... bind9 [ OK ] Processing triggers for man-db ... locale: Cannot set LC_CTYPE to default locale: No such file or directory locale: Cannot set LC_MESSAGES to default locale: No such file or directory locale: Cannot set LC_ALL to default locale: No such file or directory How do I fix this error ?

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  • OWB 11.2.0.2: Managing Use of Optional OWB Features

    - by antonio romero
    Most OWB users know that parts of Warehouse Builder are covered with the database license and others require additional options (such as the Oracle Data Integrator Enterprise Edition license). Warehouse Builder 11.2.0.2 adds the ability to disable optional feature groups. This lets you avoid the inadvertent use of most licensed features at the repository level.  This capability is accessed through the 11.2.0.2 Repository Assistant. We’ll look at the basics here. There’s also a new whitepaper that details which features are in the different feature groups associated with licenses. Read on to find out more. In Repository Assistant in 11.2.0.2, in Step 2 (“Choose Operation”), you will see a new task, “Manage Optional Features.” This is where you choose which features to enable or disable.

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  • A hónap könyve: "Achieving Extreme Performance with Oracle Exadata"

    - by Lajos Sárecz
    Luis Moreno Campos ocpdba oracle weblog blogjában találtam a fenti fotót és a hírt, hogy megjelent az elso Oracle Exadata-ról szóló könyv! Már a tartalomjegyzék alapján nagyon ígéretes a könyv. Azt gondolom kötelezo olvasmány mindazoknak, akik használják, használni fogják az Oracle Exadata Database Machine-t, vagy egyszeruen csak érdeklodnek azon Oracle technológiák iránt, melyek annyira kimagasló képességuvé teszik ezt a korszakváltó adatbázis szervert. A könyv az alábbi forrásból érheto el: Achieving Extreme Performance with Oracle Exadata (Osborne ORACLE Press Series) Rick Greenwald Apropó, épp félóra múlva lesz egy érdekes webcast arról, hogyan lehet biztonsággal vegyes terhelést futtatni egy Exadata szerveren. Még lehet regisztrálni!

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  • Oracle OpenWorld 2012 Tweet Meet!

    - by Oracle OpenWorld Blog Team
    By jgelhaus OTN Tweet Meet Do you tweet? What’s your handle?Ever wanted to meet the faces behind all the tweets from Oracle, partners, and fellow customers?Grab a @__ nametag and join in on Tuesday, October 2, from 4:30 p.m. to 6:30 p.m. at the OTN lounge (you know, in that big tent on Howard Street between Moscone North and South). So come and mingle with fellow tweeters. In addition to the great company of tweeters, Oracle Database experts will also be on hand to answer questions. 

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  • Recorded YouTube-like presentation and "live" demos of Oracle Advanced Analytics

    - by chberger
    Ever want to just sit and watch a YouTube-like presentation and "live" demos of Oracle Advanced Analytics?  Then ' target=""click here! This 1+ hour long session focuses primarily on the Oracle Data Mining component of the Oracle Advanced Analytics Option and is tied to the Oracle SQL Developer Days virtual and onsite events.   I cover: Big Data + Big Data Analytics Competing on analytics & value proposition What is data mining? Typical use cases Oracle Data Mining high performance in-database SQL based data mining functions Exadata "smart scan" scoring Oracle Data Miner GUI (an Extension that ships with SQL Developer) Oracle Business Intelligence EE + Oracle Data Mining resutls/predictions in dashboards Applications "powered by Oracle Data Mining for factory installed predictive analytics methodologies Oracle R Enterprise Please contact [email protected] should you have any questions.  Hope you enjoy!  Charlie Berger, Sr. Director of Product Management, Oracle Data Mining & Advanced Analytics, Oracle Corporation

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  • Which online form builders offer conditional logic/branching?

    - by Hari Sundararajan
    I have a survey with the following form fields: Country Age Male/Female Undergraduate/Graduate Question? Yes No If No, what about this and that? Yes No Google Forms and SurveyMonkey don't seem to allow things like the above. For question one I could ask, "What country are you from?" with a textbox as an answer section and work around it. But how do I go about creating questions five and six? I am not able to figure out how to do it except for having one more question that says "If your answer to the previous question was No, then blah blah (else skip this question)". Any suggestions, apart from creating my own custom website with JavaScript and a backend database?

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  • Is ODBC on Windows 2003 slower than on Windows 7?

    - by nbolton
    I am seeing some MSSQL 2005 performance issues, and I am trying to diagnose the cause. I am using SQL profiler to gather query execution times. Both the client (using ODBC), and the SQL server are running on Windows 2003. I am also using Windows 7 (client) with a different Windows 2003 server to compare results. Windows 7 client / Windows 2003 server: SQL management studio: 393ms Through ODBC: 215ms Windows 2003 client: SQL management studio: approx 155ms Through ODBC: 3145ms ... in both cases, I'm running SQL management studio on the client. To me, these figures suggest there's something wrong with the ODBC client on the Windows 2003 server. On Windows, I see that the ODBC "SQL Server" driver is version 6.01.7600.16385 but on Windows 2003, it is 2000.86.3959.00 (by default). Could this be the problem? Is it possible to update an ODBC driver?

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  • MySQL Connector/Net 6.6.3 Beta 2 has been released

    - by fernando
    MySQL Connector/Net 6.6.3, a new version of the all-managed .NET driver for MySQL has been released.  This is the second of two beta releases intended to introduce users to the new features in the release. This release is feature complete it should be stable enough for users to understand the new features and how we expect them to work.  As is the case with all non-GA releases, it should not be used in any production environment.  It is appropriate for use with MySQL server versions 5.0-5.6. It is now available in source and binary form from http://dev.mysql.com/downloads/connector/net/#downloads and mirror sites (note that not all mirror sites may be up to date at this point-if you can't find this version on some mirror, please try again later or choose another download site.) The 6.6 version of MySQL Connector/Net brings the following new features:   * Stored routine debugging   * Entity Framework 4.3 Code First support   * Pluggable authentication (now third parties can plug new authentications mechanisms into the driver).   * Full Visual Studio 2012 support: everything from Server Explorer to Intellisense&   the Stored Routine debugger. Stored Procedure Debugging ------------------------------------------- We are very excited to introduce stored procedure debugging into our Visual Studio integration.  It works in a very intuitive manner by simply clicking 'Debug Routine' from Server Explorer. You can debug stored routines, functions&   triggers. These release contains fixes specific of the debugger as well as other fixes specific of other areas of Connector/NET:   * Added feature to define initial values for InOut stored procedure arguments.   * Debugger: Fixed Visual Studio locked connection after debugging a routine.   * Fix for bug Cannot Create an Entity with a Key of Type String (MySQL bug #65289, Oracle bug #14540202).   * Fix for bug "CacheServerProperties can cause 'Packet too large' error". MySQL Bug #66578 Orabug #14593547.   * Fix for handling unnamed parameter in MySQLCommand. This fix allows the mysqlcommand to handle parameters without requiring naming (e.g. INSERT INTO Test (id,name) VALUES (?, ?) ) (MySQL Bug #66060, Oracle bug #14499549).   * Fixed end of line issue when debugging a routine.   * Added validation to avoid overwriting a routine backup file when it hasn't changed.   * Fixed inheritance on Entity Framework Code First scenarios. (MySql bug #63920 and Oracle bug #13582335).   * Fixed "Trying to customize column precision in Code First does not work" (MySql bug #65001, Oracle bug #14469048).   * Fixed bug ASP.NET Membership database fails on MySql database UTF32 (MySQL bug #65144, Oracle bug #14495292).   * Fix for MySqlCommand.LastInsertedId holding only 32 bit values (MySql bug #65452, Oracle bug #14171960).   * Fixed "Decimal type should have digits at right of decimal point", now default is 2, and user's changes in     EDM designer are recognized (MySql bug #65127, Oracle bug #14474342).   * Fix for NullReferenceException when saving an uninitialized row in Entity Framework (MySql bug #66066, Oracle bug #14479715).   * Fix for error when calling RoleProvider.RemoveUserFromRole(): causes an exception due to a wrong table being used (MySql bug #65805, Oracle bug #14405338).   * Fix for "Memory Leak on MySql.Data.MySqlClient.MySqlCommand", too many MemoryStream's instances created (MySql bug #65696, Oracle bug #14468204).   * Added ANTLR attribution notice (Oracle bug #14379162).   * Fix for debugger failing when having a routine with an if-elseif-else.   * Also the programming interface for authentication plugins has been redefined. Some limitations remains, due to the current debugger architecture:   * Some MySQL functions cannot be debugged currently (get_lock, release_lock, begin, commit, rollback, set transaction level)..   * Only one debug session may be active on a given server. The Debugger is feature complete at this point. We look forward to your feedback. Documentation ------------------------------------- You can view current Connector/Net documentation at http://dev.mysql.com/doc/refman/5.5/en/connector-net.html You can find our team blog at http://blogs.oracle.com/MySQLOnWindows. You can also post questions on our forums at http://forums.mysql.com/. Enjoy and thanks for the support!

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  • Opensource showcase for MVC in Java Swing

    - by Regular John
    I've allready created small desktop CRUD applications using Java/Swing. In hindsight I'm not quite sure if the overall design of these applications is good. I've also done some reading on MVC and looked at different Swing-tutorials. My problem is, that I've got a very theroatical knowledge of MVC and on the other hand, most Swing-resources don't implement the MVC-pattern. Now I would like to get my hands dirty and see how MVC is implemented in Swing in a real-world-application. Are there any opensource project you could recommend? It would be also interesting to have more than one project, to see different approaches. Best fit would be a software, that uses a relational database in the backend, to see an overall design, that I can compare to my former applications.

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