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  • ???? ????????????????????????????

    - by OTN-J Master
    Oracle Corporation????????????????????????????????????????????Oracle.com????????????????????????????????????????????????! ??????????????????????????????OTN?????????OTN Newsletter?Java Developer Newsletter?????????????????2014?5?????????? ??????????Oracle.com???????????????(???????)????????????????????????????????????12?????????????????????????????? A) Oracle.com???????????????B) Oracle.com??????????????????????C) ?????????????????????? Oracle.com???????????????????????????????????????????(???????)??????????????????????12?????????????????????????????????? ?????”OTN Newsletter 5?????????????????”???????2013?5??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????(1) ??????????????? (??????????????????????)(2) ?????????????????????????? ??????????????????????????????????(3) ????????????????   ????????·?????????????????????????(4) ???????????????????????????????????????????? (?????????????????????????????????????????) (5) ????????????????????? (6) ?????????????????????????????? ??????·Oracle.com?????????????????????·Oracle.com??????????FAQ?????????

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  • ??????!WebLogic Server????????! WebLogic Server???@Oracle Days 2013

    - by Masa Sasaki
    WebLogic Server?????????????WebLogic Server????????10?23???????Oracle Days Tokyo 2013??D2-JV-2?????????WebLogic Server????????!WebLogic Server???@Oracle Days?????????WebLogic Server?????????????????????????????????????????????????????????????????LT???WebLogic Server?????Java?????????????????????????????????????????????????WebLogic Server?????????????????????????????(?????? Fusion Middleware?????? ??? ??) ????????????? ?????????????WebLogic Server???????????????????????LT??????????????????????????????????????? Oracle WebLogic Server??????????????? ?WebLogic Server???????????? ?????? ?? ?? ?Oracle JDBC????????????? ??????????????????(OracleACE) ?? ??? ?WebLogic Server???????????TIPS? ?????????????????? ?? ??? ????????????? ??????????????? ? ?? Oracle WebLogic Server???????????????????? ?WebLogic Server????????????????? ?????? ???? ???????????????? ???SSL ?? ??? ?Native Memory Tracking??? ?????????????????? (OracleACE) ?? ??? ?Flight Recorder?????? GlassFish????·????·???? ??? ?? ??? Oracle WebLogic Server????? ??????Oracle Direct?? ?????? ?? ?? ????? WebLogic!? Facebook????WebLogic!??? ?????? ?????? WebLogic Server??? WebLogic Server?????????WebLogic Server???? ?! WebLogic Server??????(???????????) WebLogic Server???????? WebLogic Server??????

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  • Oracle TechCast Live: "MySQL 5.5 Does Windows"

    - by bertrand.matthelie(at)oracle.com
    @font-face { font-family: "Arial"; }@font-face { font-family: "Cambria"; }p.MsoNormal, li.MsoNormal, div.MsoNormal { margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman"; }a:link, span.MsoHyperlink { color: blue; text-decoration: underline; }a:visited, span.MsoHyperlinkFollowed { color: purple; text-decoration: underline; }div.Section1 { page: Section1; } Interested in MySQL on Windows? Join our next Oracle TechCast Live on Tuesday January 11th at 10.00 am PT! MySQL Product Manager Mike Frank will then tell you all about the major MySQL 5.5 performance gains on Windows.   In case you're not familiar with the Oracle TechCast Live events, they're akin to online "fireside chats" with experts about new tools, technologies and trends in application development. They also include live Q&A sessions, and you can ask questions via Twitter & Facebook. You can check out a few archived sessions here.   Get ready to ask your questions to Mike!   We hope many of you will join.

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  • Oracle WebCenter - Well Connected

    - by Brian Dirking
    800x600 Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Calibri","sans-serif"; mso-bidi-font-family:"Times New Roman";} An good post from Dan Elam on the state of the ECM industry (http://www.aiim.org/community/blogs/community/ECM-Vendors-go-to-War) . For those of you who don’t know Dan, he is one of the major forces in the content management industry. He founded eVisory and IMERGE Consulting, he is an AIIM Fellow and a former US Technical Expert to the International Standards Organization (ISO), and has been a driving force behind EmTag, AIIM’s Emerging Technologies Group. His post is interesting – it starts out talking about our Moveoff Documentum campaign, but then it becomes a much deeper insight into the ECM industry. Dan points out that Oracle has been making quiet strides in the ECM industry. In fact, analysts share this view Oracle, pointing out Oracle is growing greater than 20% annually while many of the big vendors are shrinking. And as Dan points out, this cements Oracle as one of the big five in the ECM space – the same week that Autonomy was removed from the Gartner Magic Quadrant for ECM. One of the key things points out is that Oracle WebCenter is well connected. WebCenter has out-of-the-box connections to key enterprise applications such as E-Business Suite, PeopleSoft, Siebel and JD Edwards. Those out-of-the-box integrations make it easy for organizations to drive content right into the places where it is needed, in the midst of business processes. At the same time, WebCenter provides composite interface capabilities to bring together two or more of these enterprise applications onto the same screen. Combine that with the capabilities of Oracle Social Network, you start to see how Oracle is providing a full platform for user engagement. But beyond those connections, WebCenter can also connect to other content management systems. It can index and search those systems from a single point of search, bringing back results in a single combined hitlist. WebCenter can also extend records management capabilities into Documentum, SharePoint, and email archiving systems. From a single console, records managers can define a series, set a retention schedule, and place holds – without having to go to each system to make these updates. Dan points out that there are some new competitive dynamics – to be sure. And it is interesting when a system can interact with another system, enforce dispositions and holds, and enable users to search and retrieve content. Oracle WebCenter is providing the infrastructure to build on, and the interfaces to drive user engagement. It’s an interesting time.

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  • Oracle OpenWorld 2012. Rueda de prensa de Mark Hurd: pilares de la estrategia de Oracle

    - by Fabian Gradolph
    Estamos en la segunda jornada de OpenWorld 2012. La sesión ha comenzado con la presentación de Mark Hurd, quien después de su intervención, ha ofrecido una rueda de prensa multitudinaria. Es probable que más de 80 o 90 periodistas estuviesen presentes en la sala. El presidente de Oracle nos ha presentado una muy buena síntesis sobre la estrategia de la compañía, que básicamente está basada en cuatro pilares. He aquí un breve resumen: 1. Ofrecer los mejores productos y soluciones en cada una de las capas tecnológicas. Es decir, los mejores productos de almacenamiento de información, los mejores servidores, la mejor base de datos… todos ellos basados en estándares de la industria, lo que favorece la interoperabilidad con los productos de otros fabricantes, si esa es la elección del cliente. 2. Integrar los productos desde la fase de diseño y desarrollo para ofrecer a los clientes soluciones que proporcionen un rendimiento extremo. Los mayores exponentes de esta estrategia son los Engineered Systems (sistemas de ingeniería conjunta), que incluyen productos estrella como Exadata, Exalogic, o Exalitycs. Al combinar las mejores capacidades de los productos Oracle e integrarlos verticalmente, se consiguen los siguientes beneficios. Rendimiento extremo de las soluciones tecnológicas. Por ejemplo, la última versión de Exadata, presentada ahora, ofrece una velocidad hasta 100 veces mayor que la anterior. Reducción de costes. Los sistemas integrados permiten reducir la necesidad de espacio, el tiempo de instalación e integración y los costes de mantenimiento. Su mayor rendimiento también se traduce en una menor necesidad de inversión en infraestructura. Simplificación de la gestión y el mantenimiento. Al integrar diferentes tipos de soluciones en una sola, también se simplifica la contratación de sistemas de soporte, centralizándolos en un único proveedor. 3. 3. Una propuesta completa para entornos cloud. La propuesta de Oracle incluye una cloud pública (Oracle Public Cloud), infraestructura para clouds privadas e infraestructura para sistemas híbridos. Así, la compañía ofrece Aplicaciones como Servicio (AaaS), Plataforma como servicio (PaaS) e infraestructura como servicio (IaaS). Al mismo tiempo, facilita soluciones para que las empresas construyan sus propias infraestructuras cloud. La ventaja de la propuesta de Oracle es que se utiliza la misma tecnología para la cloud pública o la privada, de forma que los clientes tengan facilidad para escoger qué aplicaciones mantendrán en un sistema público, cuáles en un sistema privado, etc. La máxima interoperabilidad permite, además, trasnferir aplicaciones de unas modalidades a otras sin problemas. 4. Aplicaciones sectoriales. Oracle está apostando fuertemente por el desarrollo de aplicaciones específicas para los diferentes sectores de actividad. Así, Oracle proporciona soluciones concretas para Banca y Finanzas, Distribución, Logística, Sector Público, Telecomunicaciones y un largo etcétera. Tras sus palabras preliminares hubo una interesante ronda de preguntas. No es posible hacer un resumen de todas ellas, pero me quedo con un mensaje que Mark ha repetido en un par de ocasiones: Oracle quiere seguir creciendo en todos los mercados en los que opera y se trata de una estrategia para crecer. Así lo esperamos todos.

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  • Oracle Employees Support New World Record for IYF Children's Hour

    - by Maria Sandu
    Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 960 students ‘crouched’, ‘touched’ and ‘set’ under the watchful eye of International Rugby Referee Alain Roland, and supported by Oracle employees, to successfully set a new world record for the World’s Largest Scrum to raise funds and awareness for the Irish Youth Foundation. Last year Oracle Employees supported the Irish Youth Foundation by donating funds from their payroll through the Giving Tree Appeal. We were the largest corporate donor to the IYF by raising €3075. To acknowledge our generosity the IYF asked Oracle Leadership in Society team members to participate in their most recent campaign which was to break the Guinness Book of Records by forming the World’s Largest Rugby Scrum. This was a wonderful opportunity for Oracle’s Leadership in Society to promote the charity, support education and to make a mark in the Corporate Social Responsibility field. The students who formed the scrum also gave up their lunch money and raised a total of €3000. This year we hope Oracle Employees will once again support the IYF with the challenge to match that amount. On the 24th of October the sun shone down on the streaming lines of students entering the field. 480 students were decked out in bright red Oracle T-Shirts against the other 480 in blue and white jerseys - all ready to form a striking scrum. Ryan Tubridy the host of the event made the opening announcement and with the blow of a whistle the Scum began. 960 students locked tight together with the Leinster players also at each side. Leinster Manager Matt O’Connor was there along with presenters Ryan Tubridy and George Hook to assist with getting the boys in line and keeping the shape of the scrum. In accordance with Guinness Book of Records rules, the ball was fed into the scrum properly by Ireland and Leinster scrum-half, Eoin Reddan, and was then passed out the line to his Leinster team mates including Ian Madigan, Brendan Macken and Jordi Murphy, also proudly sporting the Oracle T-Shirt. The new World Record was made, everyone gave a big cheer and thankfully nobody got injured! Thank you to everyone in Oracle who donated last year through the Giving Tree Appeal. Your generosity has gone a long way to support local groups both. Last year’s donation was so substantial that the IYF were able to spread it across two youth groups: The first being Ballybough Youth Project in Dublin. The funding gave them the chance to give 24 young people from their project the chance to get away from the inner city and the problems and issues they face in their daily life by taking a trip to the Cavan Centre to spend a weekend away in a safe and comfortable environment; a very rare holiday in these young people’s lives. The Rahoon Family Centre. Used the money to help secure the long term sustainability of their project. They act as an educational/social/fun project that has been working with disadvantaged children for the past 16 years. Their aim is to change young people’s future with fun /social education and supporting them so they can maximize their creativity and potential. We hope you can help support this worthy cause again this year, so keep an eye out for the Children’s Hour and Giving Tree Appeal! About the Irish Youth Foundation The IYF provides opportunities for marginalised children and young people facing difficult and extreme conditions to experience success in their lives. It passionately believes that achievement starts with opportunity. The IYF’s strategy is based on providing safe places where children can go after school; to grow, to learn and to play; and providing opportunities for teenagers from under-served communities to succeed and excel in their lives. The IYF supports innovative grassroots projects operated by dedicated professionals who understand young people and care about them. This allows the IYF to focus on supporting young people at risk of dropping out of school and, in particular, on the critical transition from primary to secondary school; and empowering teenagers from disadvantaged neighborhoods to become engaged in their local communities. Find out more here www.iyf.ie

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  • My Experience at Oracle !!! By Ayush Gupta

    - by Nadiya
    Normal 0 false false false EN-US X-NONE X-NONE Hi! My name is Ayush, a Gratuate from BITS Pilani and now working and living in Bangalore. I joined Oracle in August 2013 as a Senior Consultant (SC) and would like to share my experiences over the first couple of months with you.It has been a wonderful journey so far. The last two months have been very exciting for me. First of all I would like to mention that the training program at Oracle that we went through really prepared us well. It matured us and allowed us to go from developing small applications in college to big enterprise products. Two months of initial training has had a lasting impact for me. I am also really enjoying the knowledge I have gained so far and also learning new things in the form of product training. It's really fun to work here. We are treated like adults and we are responsible for our own workloads.With that I can't keep from mentioning the fun times we as a team have in the form of Young Leadership programme in Hotel Fortune Trinity which included Luxurious buffet lunch too. Wishing it could happen more frequently.  Oracle provides one of the best opportunities to learn various technologies across different platforms. What I like best about working at Oracle is the work life balance. With the option of flexible timings, one can easily enjoy planned evenings with friends or maybe working out at the fitness centre in your building. Be it the birthday celebrations at office or the day long team outing at a resort, It’s all together a different experience. Overall, you get to take full ownership of your project and they give you a free leash on how you design your enhancements/changes.As one of the largest international companies, Oracle is obviously an expert on exploring the potential and possibility of inexperienced new hires. We were taught how to make an outstanding team work in a group training session at the first few weeks. From this experience I realized that perfect cooperation is not about where you come from or what your study background is, everyone can find his or her own role to support the team. Even though I am not that skilled in technology, my background has significantly helped me in learning new technologies in Oracle.My idea and suggestion is: for new joiners, the will to learn is be more important than what you have learnt before. Colleagues here at Oracle are professionals in their field, always friendly and glad to help. So don’t worry, all you need to do is just be confident, and have a nice attitude, Oracle will let you fully display your talent. Come and join us, here you can always find a tailor made role for you! /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-family:"Calibri","sans-serif"; mso-ascii- mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi- mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;}

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  • Performance implications of Synchronous Sockets vs Asynchronous Sockets

    - by Akash Kava
    We are trying to build an SMTP Server to receive mail notifications from various clients over internet. As each of the communication will be longer and it needs to log everything, doing this Asynchronous way is little challenging as well as by using Socket's Asynchronous methods we are not sure of how flow of control and error handling happens. Previously we wrote lot of server/client apps but we always used Synchronous sockets, reason being they are longer sessions and each session also has lot of local data to manage and parsing messages etc. Does anyone have any experience over real performance differences between these two methods? Async calls use ThreadPool which we have experienced many times to just die for no reason. And we fail to restart threadpool etc. In one way Request-Response protocol of HTTP, Async Sockets makes sense, but SMTP/IMAP etc protocols are longer and they have interleaved messages plus state machine of server. So Async methods are really complicated to program. However if anyone can share the performance of Sockets, it will be helpful.

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  • SQL Server 2005 high memory usage and performance problems

    - by emzero
    Hi there guys. I have this ASP.NET/SQLServer2005 website running on a production server (Win2003, QuadCore, 4GB). The site runs smoothly normally, but after 2-3 weeks I notice a slow performance on the site (especifically in one particular page). Also I notice that the SQL Server process is using like 2GBs of RAM. So I restart the service, the site runs fast again and the process 300-400MBs. I'm looking for an explanation of why is this happening? What is SQL Server storing in RAM that takes too much space and degrades the performance? What can I do to avoid this? I'm trying to avoid restarting the SQLServer everytime this happens. Thank you!

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  • subsonic.migrations and Oracle XE

    - by andrecarlucci
    Hello, Probably I'm doing something wrong but here it goes: I'm trying to create a database using subsonic.migrations in an OracleXE version 10.2.0.1.0. I have ODP v 10.2.0.2.20 installed. This is my app.config: <?xml version="1.0" encoding="utf-8" ?> <configuration> <configSections> <section name="SubSonicService" type="SubSonic.SubSonicSection, SubSonic" requirePermission="false"/> </configSections> <connectionStrings> <add name="test" connectionString="Data Source=XE; User Id=test; Password=test;"/> </connectionStrings> <SubSonicService defaultProvider="test"> <providers> <clear/> <add name="test" type="SubSonic.OracleDataProvider, SubSonic" connectionStringName="test" generatedNamespace="testdb"/> </providers> </SubSonicService> </configuration> And that's my first migration: public class Migration001_Init : Migration { public override void Up() { //Create the records table TableSchema.Table records = CreateTable("asdf"); records.AddColumn("RecordName"); } public override void Down() { DropTable("asdf"); } } When I run the sonic.exe, I get this exception: Setting ConfigPath: 'App.config' Building configuration from D:\Users\carlucci\Documents\Visual Studio 2008\Projects\Wum\Wum.Migration\App.config Adding connection to test ERROR: Trying to execute migrate Error Message: System.Data.OracleClient.OracleException: ORA-02253: especifica‡Æo de restri‡Æo nÆo permitida aqui at System.Data.OracleClient.OracleConnection.CheckError(OciErrorHandle errorHandle, Int32 rc) at System.Data.OracleClient.OracleCommand.Execute(OciStatementHandle statementHandle, CommandBehavior behavior, Boolean needRowid, OciRowidDescriptor& rowidDescriptor, ArrayList& resultParameterOrdinals) at System.Data.OracleClient.OracleCommand.ExecuteNonQueryInternal(Boolean needRowid, OciRowidDescriptor& rowidDescriptor) at System.Data.OracleClient.OracleCommand.ExecuteNonQuery() at SubSonic.OracleDataProvider.ExecuteQuery(QueryCommand qry) in D:\@SubSonic\SubSonic\SubSonic\DataProviders\OracleDataProvider.cs:line 350 at SubSonic.DataService.ExecuteQuery(QueryCommand cmd) in D:\@SubSonic\SubSonic\SubSonic\DataProviders\DataService.cs:line 544 at SubSonic.Migrations.Migrator.CreateSchemaInfo(String providerName) in D:\@SubSonic\SubSonic\SubSonic.Migrations\Migrator.cs:line 249 at SubSonic.Migrations.Migrator.GetCurrentVersion(String providerName) in D:\@SubSonic\SubSonic\SubSonic.Migrations\Migrator.cs:line 232 at SubSonic.Migrations.Migrator.Migrate(String providerName, String migrationDirectory, Nullable`1 toVersion) in D:\@SubSonic\SubSonic\SubSonic.Migrations\Migrator.cs:line 50 at SubSonic.SubCommander.Program.Migrate() in D:\@SubSonic\SubSonic\SubCommander\Program.cs:line 264 at SubSonic.SubCommander.Program.Main(String[] args) in D:\@SubSonic\SubSonic\SubCommander\Program.cs:line 90 Execution Time: 379ms What am I doing wrong? Thanks a lot for any help :) Andre Carlucci UPDATE: As pointed by Anton, the problem is the subsonic OracleSqlGenerator. It is trying to create the schema table using this sql: CREATE TABLE SubSonicSchemaInfo ( version int NOT NULL CONSTRAINT DF_SubSonicSchemaInfo_version DEFAULT (0) ) Which doesn't work on oracle. The correct sql would be: CREATE TABLE SubSonicSchemaInfo ( version int DEFAULT (0), constraint DF_SubSonicSchemaInfo_version primary key (version) ) The funny thing is that since this is the very first sql executed by subsonic migrations, NOBODY EVER TESTED it on oracle.

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  • WCF performance improvements

    - by Burt
    I am developing a WPF application that talks to a server via WCF services over the internet. After profiling the application I noticed a lot of time is being taking up by creating the appropriate WCF client proxy and making the call to the server. The code on the server is optimised and doesn't take any time to run yet I am still seeing a 1.5 second delay from when a service is invloked to it returning to the client. A few points to give a bit of background: I am using the ASP.Net membership for security I will eventually hook into the same server side code through a website I would eventually like to have offline support in the application I really need to nail the performance early though as if the app is taking a couple of seconds to come back it is too long for what I am trying to do. Can anyone suggest performance tips that will help me please?

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  • Oracle 9i Session Disconnections

    - by mlaverd
    [Cross-Posting from ServerFault] I am in a development environment, and our test Oracle 9i server has been misbehaving for a few days now. What happens is that we have our JDBC connections disconnecting after a few successful connections. We got this box set up by our IT department and handed over to. It is 'our problem', so options like 'ask you DBA' isn't going to help me. :( Our server is set up with 3 plain databases (one is the main dev db, the other is the 'experimental' dev db). We use the Oracle 10 ojdbc14.jar thin JDBC driver (because of some bug in the version 9 of the driver). We're using Hibernate to talk to the DB. The only thing that I can see that changed is that we now have more users connecting to the server. Instead of one developer, we now have 3. With the Hibernate connection pools, I'm thinking that maybe we're hitting some limit? Anyone has any idea what's going on? Here's the stack trace on the client: Caused by: org.hibernate.exception.GenericJDBCException: could not execute query at org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQLStateConverter.java:126) [hibernate3.jar:na] at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:114) [hibernate3.jar:na] at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66) [hibernate3.jar:na] at org.hibernate.loader.Loader.doList(Loader.java:2235) [hibernate3.jar:na] at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2129) [hibernate3.jar:na] at org.hibernate.loader.Loader.list(Loader.java:2124) [hibernate3.jar:na] at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:401) [hibernate3.jar:na] at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:363) [hibernate3.jar:na] at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:196) [hibernate3.jar:na] at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1149) [hibernate3.jar:na] at org.hibernate.impl.QueryImpl.list(QueryImpl.java:102) [hibernate3.jar:na] ... Caused by: java.sql.SQLException: Io exception: Connection reset at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112) [ojdbc14.jar:Oracle JDBC Driver version - "10.2.0.4.0"] at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146) [ojdbc14.jar:Oracle JDBC Driver version - "10.2.0.4.0"] at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:255) [ojdbc14.jar:Oracle JDBC Driver version - "10.2.0.4.0"] at oracle.jdbc.driver.T4CPreparedStatement.executeForDescribe(T4CPreparedStatement.java:829) [ojdbc14.jar:Oracle JDBC Driver version - "10.2.0.4.0"] at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:1049) [ojdbc14.jar:Oracle JDBC Driver version - "10.2.0.4.0"] at oracle.jdbc.driver.T4CPreparedStatement.executeMaybeDescribe(T4CPreparedStatement.java:854) [ojdbc14.jar:Oracle JDBC Driver version - "10.2.0.4.0"] at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1154) [ojdbc14.jar:Oracle JDBC Driver version - "10.2.0.4.0"] at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3370) [ojdbc14.jar:Oracle JDBC Driver version - "10.2.0.4.0"] at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:3415) [ojdbc14.jar:Oracle JDBC Driver version - "10.2.0.4.0"] at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:208) [hibernate3.jar:na] at org.hibernate.loader.Loader.getResultSet(Loader.java:1812) [hibernate3.jar:na] at org.hibernate.loader.Loader.doQuery(Loader.java:697) [hibernate3.jar:na] at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:259) [hibernate3.jar:na] at org.hibernate.loader.Loader.doList(Loader.java:2232) [hibernate3.jar:na]

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  • How to handle Oracle Store Procedure call with Oracle Types as input or output using EclipseLink

    - by MAK
    Hi, I doing a Proof Of Concept to figure out how efficient to call a store procedure using EclipseLink. I was able to call oracle store procedure using EclispeLink with Scalar/primitive data types (link Integer, varchar etc). I wanted to understand how can I handle Oracle Store procedure from EclipseLink with collection(Oracle Types/User defined types) as input or output parameters. I would really appreciate if some one help me understand this with an example. Thanks MAK

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  • MySQL index cardinality - performance vs storage efficiency

    - by Sean
    Say you have a MySQL 5.0 MyISAM table with 100 million rows, with one index (other than primary key) on two integer columns. From my admittedly poor understanding of B-tree structure, I believe that a lower cardinality means the storage efficiency of the index is better, because there are less parent nodes. Whereas a higher cardinality means less efficient storage, but faster read performance, because it has to navigate through less branches to get to whatever data it is looking for to narrow down the rows for the query. (Note - by "low" vs "high", I don't mean e.g. 1 million vs 99 million for a 100 million row table. I mean more like 90 million vs 95 million) Is my understanding correct? Related question - How does cardinality affect write performance?

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  • Wpf: Tips for better performance

    - by viky
    I am working on a wpf application. In which I am working with a TreeView, each node represents different datatypes, these datatypes are having properties defined and using data template to show their properties. My application reads from xml and create tree accordingly. My problem is that when I load it, it is too slow, I want to know about the tricks that will help me to improve performance of my(any) wpf application. Edit: Please provide me some tips for better performance in wpf!! I am using wpf Profiler but it is not much helpful for me.

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  • Why does PostgresQL query performance drop over time, but restored when rebuilding index

    - by Jim Rush
    According to this page in the manual, indexes don't need to be maintained. However, we are running with a PostgresQL table that has a continuous rate of updates, deletes and inserts that over time (a few days) sees a significant query degradation. If we delete and recreate the index, query performance is restored. We are using out of the box settings. The table in our test is currently starting out empty and grows to half a million rows. It has a fairly large row (lots of text fields). We are search is based of an index, not the primary key (I've confirmed the index is being used, at least under normal conditions) The table is being used as a persistent store for a single process. Using PostgresQL on Windows with a Java client I'm willing to give up insert and update performance to keep up the query performance. We are considering rearchitecting the application so that data is spread across various dynamic tables in a manner that allows us to drop and rebuild indexes periodically without impacting the application. However, as always, there is a time crunch to get this to work and I suspect we are missing something basic in our configuration or usage. We have considered forcing vacuuming and rebuild to run at certain times, but I suspect the locking period for such an action would cause our query to block. This may be an option, but there are some real-time (windows of 3-5 seconds) implications that require other changes in our code. Additional information: Table and index CREATE TABLE icl_contacts ( id bigint NOT NULL, campaignfqname character varying(255) NOT NULL, currentstate character(16) NOT NULL, xmlscheduledtime character(23) NOT NULL, ... 25 or so other fields. Most of them fixed or varying character fiel ... CONSTRAINT icl_contacts_pkey PRIMARY KEY (id) ) WITH (OIDS=FALSE); ALTER TABLE icl_contacts OWNER TO postgres; CREATE INDEX icl_contacts_idx ON icl_contacts USING btree (xmlscheduledtime, currentstate, campaignfqname); Analyze: Limit (cost=0.00..3792.10 rows=750 width=32) (actual time=48.922..59.601 rows=750 loops=1) - Index Scan using icl_contacts_idx on icl_contacts (cost=0.00..934580.47 rows=184841 width=32) (actual time=48.909..55.961 rows=750 loops=1) Index Cond: ((xmlscheduledtime < '2010-05-20T13:00:00.000'::bpchar) AND (currentstate = 'SCHEDULED'::bpchar) AND ((campaignfqname)::text = '.main.ee45692a-6113-43cb-9257-7b6bf65f0c3e'::text)) And, yes, I am aware there there are a variety of things we could do to normalize and improve the design of this table. Some of these options may be available to us. My focus in this question is about understanding how PostgresQL is managing the index and query over time (understand why, not just fix). If it were to be done over or significantly refactored, there would be a lot of changes.

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  • How to maximize http.sys file upload performance

    - by anelson
    I'm building a tool that transfers very large streaming data sets (possibly on the order of terabytes in a single stream; routinely in the tens of gigabytes) from one server to another. The client portion of the tool will read blocks from the source disk, and send them over the network. The server side will read these blocks off the network and write them to a file on the server disk. Right now I'm trying to decide which transport to use. Options are raw TCP, and HTTP. I really, REALLY want to be able to use HTTP. The HttpListener (or WCF if I want to go that route) make it easy to plug in to the HTTP Server API (http.sys), and I can get things like authentication and SSL for free. The problem right now is performance. I wrote a simple test harness that sends 128K blocks of NULL bytes using the BeginWrite/EndWrite async I/O idiom, with async BeginRead/EndRead on the server side. I've modified this test harness so I can do this with either HTTP PUT operations via HttpWebRequest/HttpListener, or plain old socket writes using TcpClient/TcpListener. To rule out issues with network cards or network pathways, both the client and server are on one machine and communicate over localhost. On my 12-core Windows 2008 R2 test server, the TCP version of this test harness can push bytes at 450MB/s, with minimal CPU usage. On the same box, the HTTP version of the test harness runs between 130MB/s and 200MB/s depending upon how I tweak it. In both cases CPU usage is low, and the vast majority of what CPU usage there is is kernel time, so I'm pretty sure my usage of C# and the .NET runtime is not the bottleneck. The box has two 6-core Xeon X5650 processors, 24GB of single-ranked DDR3 RAM, and is used exclusively by me for my own performance testing. I already know about HTTP client tweaks like ServicePointManager.MaxServicePointIdleTime, ServicePointManager.DefaultConnectionLimit, ServicePointManager.Expect100Continue, and HttpWebRequest.AllowWriteStreamBuffering. Does anyone have any ideas for how I can get HTTP.sys performance beyond 200MB/s? Has anyone seen it perform this well on any environment?

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  • Performance Improvement: Alternative for array_flip function.

    - by Rachel
    Is there any way I can avoid using array_flip to optimize performance. I am doing a select statement from database, preparing the query and executing it and storing data as an associative array in $resultCollection and than I have array op and for each element in $resultCollection am storing its outputId in op[] as evident from the code. I have explained code and so my question is how can I achieve an similar alternative for array_flip with using array_flip as I want to improve performance. $resultCollection = $statement->fetchAll(PDO::FETCH_ASSOC); $op = array(); //Looping through result collection and storing unicaOfferId into op array. foreach ($resultCollection as $output) { $op[] = $output['outputId']; } //Here op array has key as 0, 1, 2...and value as id {which I am interested in} //Flip op array to get unica offer ids as key $op = array_flip($op); //Doing a flip to get id as key. foreach ($ft as $Id => $Off) { $ft[$Id]['is_set'] = isset($op[$Id]); }

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  • How to install WE8EBCDIC500 on Oracle XE?

    - by wishihadabettername
    I need to make the "WE8EBCDIC500" character set available in an Oracle XE installation (on my desktop) to import a mainframe-generated file. Running SELECT value FROM v$nls_valid_values WHERE parameter='CHARACTERSET' does not show this character set to be installed and I get KUP-03006: error initializing handle for character set WE8EBCDIC500 when attempting to use it. How can this be done? Thanks.

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  • Performance logging tips

    - by Germstorm
    I am developing large data collecting ASP.Net/Windows service application-pair that uses Microsoft SQL Server 2005 through LINQ2Sql. Performance is always the issue. Currently the application is divided into multiple larger processing parts, each logging the duration of their work. This is not detailed and does not help us with anything. It would be nice to have some database tables that contain statistics that the application itself collected from its own behavior. What logging tips and data structures do you recommend to spot the parts that cause performance problems?

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  • Declarative JDOQL vs Single-String JDOQL : performance

    - by DrDro
    When querying with JDOQL is there a performance difference between using the declarative version and the Single-String version: Example from the JDOQL doc: //Declarative JDOQL : Query q = pm.newQuery(org.jpox.Person.class, "lastName == \"Jones\" && age < age_limit"); q.declareParameters("double age_limit"); List results = (List)q.execute(20.0); //Single-String JDOQL : Query q = pm.newQuery("SELECT FROM org.jpox.Person WHERE lastName == \"Jones\"" + " && age < :age_limit PARAMETERS double age_limit"); List results = (List)q.execute(20.0); Other then performance, are there any reasons for which one is better to use then the other or is it just about the one with which we feel more comfortable.

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  • Performance concern when using LINQ "everywhere"?

    - by stiank81
    After upgrading to ReSharper5 it gives me even more useful tips on code improvements. One I see everywhere now is a tip to replace foreach-statements with LINQ queries. Take this example: private Ninja FindNinjaById(int ninjaId) { foreach (var ninja in Ninjas) { if (ninja.Id == ninjaId) return ninja; } return null; } This is suggested replaced with the following using LINQ: private Ninja FindNinjaById(int ninjaId) { return Ninjas.FirstOrDefault(ninja => ninja.Id == ninjaId); } This looks all fine, and I'm sure it's no problem regarding performance to replace this one foreach. But is it something I should do in general? Or might I run into performance problems with all these LINQ queries everywhere?

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  • Can GPU capabilities impact virtual machine performance?

    - by Dave White
    While this many not seem like a programming question directly, it impacts my development activities and so it seems like it belongs here. It seems that more and more developers are turning to virtual environments for development activities on their computers, SharePoint development being a prime example. Also, as a trainer, I have virtual training environments for all of the classes that I teach. I recently purchased a new Dell E6510 to travel around with. It has the i7 620M (Dual core, HyperThreaded cpu running at 2.66GHz) and 8 GB of memory. Reading the spec sheet, it sounded like it would be a great laptop to carry around and run virtual machines on. Getting the laptop though, I've been pretty disappointed with the user experience of developing in a virtual machine. Giving the Virtual Machine 4 GB of memory, it was slow and I could type complete sentences and watch the VM "catchup". My company has training laptops that we provide for our classes. They are Dell Precision M6400 Intel Core 2 Duo P8700 running at 2.54Ghz with 8 GB of memory and the experience on this laptops is night and day compared to the E6510. They are crisp and you barely aware that you are running in a virtual environment. Since the E6510 should be faster in all categories than the M6400, I couldn't understand why the new laptop was slower, so I did a component by component comparison and the only place where the E6510 is less performant than the M6400 is the graphics department. The M6400 is running a nVidia FX 2700m GPU and the E6510 is running a nVidia 3100M GPU. Looking at benchmarks of the two GPUs suggest that the FX 2700M is twice as fast as the 3100M. http://www.notebookcheck.net/Mobile-Graphics-Cards-Benchmark-List.844.0.html 3100M = 111th (E6510) FX 2700m = 47th (Precision M6400) Radeon HD 5870 = 8th (Alienware) The host OS is Windows 7 64bit as is the guest OS, running in Virtual Box 3.1.8 with Guest Additions installed on the guest. The IDE being used in the virtual environment is VS 2010 Premium. So after that long setup, my question is: Is the GPU significantly impacting the virtual machine's performance or are there other factors that I'm not looking at that I can use to boost the vm's performance? Do we now have to consider GPU performance when purchasing laptops where we expect to use virtualized development environments? Thanks in advance. Cheers, Dave

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  • MYSQL Convert rows to columns performance problem

    - by Tarski
    I am doing a query that converts rows to columns similar to this post but have encountered a performance problem. Here is the query:- SELECT Info.Customer, Answers.Answer, Answers.AnswerDescription, Details.Code1, Details.Code2, Details.Code3 FROM Info LEFT OUTER JOIN Answers ON Info.AnswerID = Answers.AnswerID LEFT OUTER JOIN (SELECT ReferenceNo, MAX(CASE DetailsIndicator WHEN 'cde1' THEN DetailsCode ELSE NULL END ) Code1, MAX(CASE DetailsIndicator WHEN 'cde2' THEN DetailsCode ELSE NULL END ) Code2, MAX(CASE DetailsIndicator WHEN 'cde3' THEN DetailsCode ELSE NULL END ) Code3 FROM DetailsData GROUP BY ReferenceNo) Details ON Info.ReferenceNo = Details.ReferenceNo There are less than 300 rows returned, but the Details table is about 180 thousand rows. The query takes 45 seconds to run and needs to take only a few seconds. When I type show processlist; into MYSQL it is hanging on "Sending Data". Any thoughts as to what the performance problem might be?

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