Help: Out of Memory Error...
Hi All, We are about to deploy a new application for our client that is built on Orion. The application consists of some Servlets, statefull and stateless session beans and CM entity beans. We have been testing the application for a month now and did not experience any problems. However today we set up a client application that sequentially submits XML documents to the Servlet which controls a Statefull Session bean. (This is also how our web-application (and that of others) talk to this servlet (via XML). Normally a human is entering data in a web application and the data is marshalled in an XML document and send to the Servlet). The client-application is supposed to submit 2 XML documents sequentially to the servlet, which parses it, calls some methods of a statefull session bean (which controls other stateless session beans and entity beans) and sends an XML reply back. Every XML request takes about 1.5s to process. So far so good. However after an hour (or so) of running, Orion gets an java.lang.OutOfMemory Exception (see below). Does anybody known a solution. It is very important because we are about to deploy our application in production environment. Maybe we should delimit the number of (entity) bean instances? For every XML request about 20 records (hence entity beans) are created. BTW We are using SQL-server as a database. Thanks very much in advance, Arjen Schoneveld 11/28/01 6:28 PM nbwo: Servlet error java.lang.OutOfMemoryError no stack trace available 11/28/01 6:28 PM Error in bean NBWOSession java.lang.OutOfMemoryError no stack trace available 11/28/01 6:28 PM Error in bean Requests: Error loading state java.rmi.RemoteException: java.lang.IllegalStateException: Transaction expired: java.lang.OutOfMemoryError at com.dvs.nbwo.toolbox.ejb.entity.RequestsBean.ejbLoad(RequestsBean.java:8 6) at Requests_EntityBeanWrapper3.loadState(Requests_EntityBeanWrapper3.java:7 17) at com.evermind[Orion/1.5.2 (build 10460)].server.ejb.EntityEJBObject.endTransaction(Unknown Source) at com.evermind[Orion/1.5.2 (build 10460)].server.ApplicationServerTransactionSynchronization._vib(Unknown Source) at com.evermind[Orion/1.5.2 (build 10460)].server.ApplicationServerTransaction._vib(Unknown Source) at com.evermind[Orion/1.5.2 (build 10460)].server.ApplicationServerTransactionSynchronization.afterCompleti on(Unknown Source) at com.evermind[Orion/1.5.2 (build 10460)].server.ApplicationServerTransaction._end(Unknown Source) at com.evermind[Orion/1.5.2 (build 10460)].server.ApplicationServerTransaction.end(Unknown Source) at NBWOSession_StatefulSessionBeanWrapper27.storeData(NBWOSession_StatefulS essionBeanWrapper27.java:3919) at com.dvs.nbwo.toolbox.servlets.NBWOServlet.maakResultaatWaardebepalingsBe richt(NBWOServlet.java:1375) at com.dvs.nbwo.toolbox.servlets.NBWOServlet.doNbwoToetsing(NBWOServlet.jav a:977) at com.dvs.nbwo.toolbox.servlets.NBWOServlet.doAction(NBWOServlet.java:168) at org.dexels.toolbox.server.ToolboxServerServlet.doPost(ToolboxServerServl et.java:395) at javax.servlet.http.HttpServlet.service(HttpServlet.java:211) at javax.servlet.http.HttpServlet.service(HttpServlet.java:309) at javax.servlet.http.HttpServlet.service(HttpServlet.java:336) at com.evermind[Orion/1.5.2 (build 10460)]._cxb._abe(Unknown Source) at com.evermind[Orion/1.5.2 (build 10460)]._cxb.include(Unknown Source) at org.dexels.toolbox.server.Postman.dispatch(Postman.java:197) at org.dexels.toolbox.server.Postman.doPost(Postman.java:513) at javax.servlet.http.HttpServlet.service(HttpServlet.java:211) at javax.servlet.http.HttpServlet.service(HttpServlet.java:309) at javax.servlet.http.HttpServlet.service(HttpServlet.java:336) at com.evermind[Orion/1.5.2 (build 10460)]._cxb._abe(Unknown Source) at com.evermind[Orion/1.5.2 (build 10460)]._cxb._uec(Unknown Source) at com.evermind[Orion/1.5.2 (build 10460)]._io._twc(Unknown Source) at com.evermind[Orion/1.5.2 (build 10460)]._io._gc(Unknown Source) at com.evermind[Orion/1.5.2 (build 10460)]._if.run(Unknown Source) 11/28/01 6:28 PM Error in bean Requests: Error while delisting bean from TX com.evermind[Orion/1.5.2 (build 10460)].transaction.MarshallingXAException at com.evermind[Orion/1.5.2 (build 10460)].server.ejb.EntityEJBObject.endTransaction(Unknown Source) at com.evermind[Orion/1.5.2 (build 10460)].server.ApplicationServerTransactionSynchronization._vib(Unknown Source) at com.evermind[Orion/1.5.2 (build 10460)].server.ApplicationServerTransaction._vib(Unknown Source) at com.evermind[Orion/1.5.2 (build 10460)].server.ApplicationServerTransactionSynchronization.afterCompleti on(Unknown Source) at com.evermind[Orion/1.5.2 (build 10460)].server.ApplicationServerTransaction._end(Unknown Source) at com.evermind[Orion/1.5.2 (build 10460)].server.ApplicationServerTransaction.end(Unknown Source) at NBWOSession_StatefulSessionBeanWrapper27.storeData(NBWOSession_StatefulS essionBeanWrapper27.java:3919
RE: Microsoft JDBC Driver - Issues w/ Data Source
All, We have been using Orion MS-SQL server successfully in a project. The JDBC driver we are using is called Opta2000 (see http://www.inetsoftware.de). Here's an excerpt from our data-sources.xml: data-source class=com.evermind.sql.DriverManagerDataSource name=NBWO_BACKEND location=core/NBWO_BACKEND xa-location=xa/NBWO_BACKEND ejb-location=NBWO_BACKEND connection-driver=com.inet.tds.TdsDriver username=sa password=sa url=jdbc:inetdae7:nbtodev:1433?database=nbwo_backend inactivity-timeout=120 / We've had no troubles so far. Regards, Arjen Schoneveld -- Dexels BV The Netherlands -Oorspronkelijk bericht- Van: Mitesh Pancholy Verzonden: za 17-11-2001 0:29 Aan: Orion-Interest CC: Onderwerp: Re: Microsoft JDBC Driver - Issues w/ Data Source Geoff, Orion SQLServer = = bad combo, you will learn through suffering as we have :) What you need to do is to unzip the contents of the jar file under the lib folder, and you did reference all 3 files in the class path right. Also use the orion data source, don't use the msft source. So your data-source.xml should look like this. data-source class=com.evermind.sql.DriverManagerDataSource schema=database-schemas/ms-sql.xml xa-location=XADS location=DS ejb-location=poolname name=poolname connection-driver=com.microsoft.jdbc.sqlserver.SQLServerDriver url=jdbc:microsoft:sqlserver://servername:1433;DatabaseName=dbname username=username password=password / RANT: The people who are using Orion Ms SQL Server need to start putting more knowledge on the list. I'll take the lead with some stuff, but people also need to contribute :) - Original Message - From: [EMAIL PROTECTED] To: Orion-Interest [EMAIL PROTECTED] Sent: Friday, November 16, 2001 8:25 AM Subject: Microsoft JDBC Driver - Issues w/ Data Source I'm having some issues with using the Microsoft SQL Server JDBC Driver with Orion. Let me give you some context: Although I have some past experience with Orion (servlets, beans, jsp), I've never used its Data Sources, so I know next to nothing about them. And, although the community and documentation have improved of late, Orion's documentation is still pretty sparse. When it came time to spend some time with EJB, I moved over to JBoss, which has stronger documentation, for a while, and while on JBoss, I started making use of the Microsoft SQL Server driver beta, which has proved to be quite reasonable (which is not too surprising, since it's the Merant driver). Due to some performance issues, I wanted to see how the application we're working on would run under Orion, so I downloaded the latest, and started to try and configure it. The basic steps were still pretty easy, but now I'm stuck on the data source - no matter what I do, I can't seem to get Orion to recognize the SQL Server driver. Has anyone tried it yet? Am I missing something obvious? I put the driver JARs (three of them: msbase, msutil, mssqlserver) in orion/lib. I modified the data-sources.xml to use the driver, as follows: data-source name=MicrosoftSqlServer location=jdbc/SqlServerDS connection-driver=com.microsoft.jdbc.sqlserver.SQLServerDriver url=jdbc:microsoft:sqlserver://panthro:1433;DatabaseName=dbVoicenetDevG eoff ;SelectMethod=cursor username=user password=password inactivity-timeout=30 class=com.evermind.sql.DriverManagerDataSource / When orion starts, it says the following: Error initializing data-source 'jdbc/SqlServerDS': DriverManagerDataSource driver 'com.microsoft.jdbc.sqlserver.SQLServerDriver' not found What does this mean? It can't find the driver? The JARs are in orion lib, I've checked that several times, including that the driver name is right, and the class is in the JAR. I can't swear that Orion is loading the JARs, because it doesn't put that out to the console or log files, so I don't really know that it's doing that, but I'm assuming it is. It does say 'DriverManagerdataSource driver', so perhaps
