I have a problem with random "inserting an already existing bean" errors at a client - about every month or so.
the error occurs on a line where i am not doing any data inserts of my own. The error happens on the home.create() Object ref2 = ctx.lookup("ejb/DestinationGroupSubstituteAccess"); javax.ejb.EJBHome substituteHome = (javax.ejb.EJBHome) PortableRemoteObject.narrow(ref2, javax.ejb.EJBHome.class); EJBObject substituteAccess = substituteHome.create(); The stack dump is as follows 2004-11-12 07:36:21,426 ERROR [org.jboss.ejb.plugins.LogInterceptor] TransactionRolledbackException, causedBy: java.lang.IllegalStateException: INSERTING AN ALREADY EXISTING BEAN, ID = 1098215578440 at org.jboss.ejb.plugins.AbstractInstanceCache.insert(AbstractInstanceCache.java:222) at org.jboss.ejb.plugins.StatefulSessionFilePersistenceManager.createSession(StatefulSessionFilePersistenceManager.java:199) at org.jboss.ejb.StatefulSessionContainer.createHome(StatefulSessionContainer.java:441) at sun.reflect.GeneratedMethodAccessor115.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at org.jboss.ejb.StatefulSessionContainer$ContainerInterceptor.invokeHome(StatefulSessionContainer.java:756) at org.jboss.ejb.plugins.SecurityInterceptor.invokeHome(SecurityInterceptor.java:105) at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invokeHome(CachedConnectionInterceptor.java:215) at org.jboss.ejb.plugins.StatefulSessionInstanceInterceptor.invokeHome(StatefulSessionInstanceInterceptor.java:128) at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:111) at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:178) at org.jboss.ejb.plugins.TxInterceptorCMT.invokeHome(TxInterceptorCMT.java:52) at org.jboss.ejb.plugins.LogInterceptor.invokeHome(LogInterceptor.java:129) at org.jboss.ejb.StatefulSessionContainer.invokeHome(StatefulSessionContainer.java:368) at org.jboss.ejb.Container.invoke(Container.java:730) at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:517) at org.jboss.invocation.local.LocalInvoker.invoke(LocalInvoker.java:98) at org.jboss.invocation.InvokerInterceptor.invoke(InvokerInterceptor.java:102) at org.jboss.proxy.TransactionInterceptor.invoke(TransactionInterceptor.java:77) at org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:80) at org.jboss.proxy.ejb.HomeInterceptor.invoke(HomeInterceptor.java:198) at org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:76) at $Proxy59.create(Unknown Source) at com.canopyint.connect.service.mdb.DestinationDuplicateMDB.processMessage(DestinationDuplicateMDB.java:81) at com.canopyint.connect.common.MdbBase.onMessage(MdbBase.java:201) at sun.reflect.GeneratedMethodAccessor113.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at org.jboss.ejb.MessageDrivenContainer$ContainerInterceptor.invoke(MessageDrivenContainer.java:391) at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:186) at org.jboss.ejb.plugins.MessageDrivenInstanceInterceptor.invoke(MessageDrivenInstanceInterceptor.java:88) at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:107) at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:178) at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:60) at org.jboss.ejb.plugins.RunAsSecurityInterceptor.invoke(RunAsSecurityInterceptor.java:100) at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:204) at org.jboss.ejb.MessageDrivenContainer.invoke(MessageDrivenContainer.java:302) at org.jboss.ejb.plugins.jms.JMSContainerInvoker.invoke(JMSContainerInvoker.java:962) at org.jboss.ejb.plugins.jms.JMSContainerInvoker$MessageListenerImpl.onMessage(JMSContainerInvoker.java:1038) at org.jboss.jms.asf.StdServerSession.onMessage(StdServerSession.java:243) at org.jboss.mq.SpyMessageConsumer.sessionConsumerProcessMessage(SpyMessageConsumer.java:603) at org.jboss.mq.SpyMessageConsumer.addMessage(SpyMessageConsumer.java:417) at org.jboss.mq.SpySession.run(SpySession.java:296) at org.jboss.jms.asf.StdServerSession.run(StdServerSession.java:178) at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:642) at java.lang.Thread.run(Thread.java:536) My environment is: jboss-3.0.4_tomcat-4.1.12 j2sdkee1.3.1 j2sdk1.4.1_01 jakarta-struts-1.1-b2 Any ideas? 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