Hello all, I'm really really stuck on a persistence issue and would like some help please. jboss-4.2.2.GA Hibernate 3 MySQL 5.0 I have an EJB that is a SessionBean & TimedObject. It wakes up every 200 ms to check a directory for any files to process. (XML files) I'm using a <local-tx-datasource>. I've tried using <no-tx-datasource>, but not all the data gets saved to the DB (no error messages). The EJB has no static member varibles. The EJB makes a call to another EJB to do the actual persistence. This is the statck trace I get... | 11:34:26,468 WARN [loggerI18N] [com.arjuna.ats.internal.jta.transaction.arjunacore.lastResource.disallow] [com.arjuna.ats.internal.jta.transaction.arjunacore.lastResource.disallow] Adding multiple last resources is disallowed. Current resource is org.jboss.resource.connectionmanager.TxConnectionManager$LocalXAResource@a488b9 | 11:34:26,515 ERROR [LogInterceptor] EJBException in method: public abstract void javax.ejb.TimedObject.ejbTimeout(javax.ejb.Timer), causedBy | : | java.lang.IllegalStateException: Unable to persist timer | at org.jboss.ejb.txtimer.DatabasePersistencePolicy.insertTimer(DatabasePersistencePolicy.java:124) | at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) | at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) | at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) | at java.lang.reflect.Method.invoke(Method.java:597) | at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155) | at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94) | at org.jboss.mx.server.Invocation.invoke(Invocation.java:86) | at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264) | at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659) | at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210) | at $Proxy29.insertTimer(Unknown Source) | at org.jboss.ejb.txtimer.TimerServiceImpl.createTimer(TimerServiceImpl.java:256) | at org.jboss.ejb.txtimer.TimerServiceImpl.createTimer(TimerServiceImpl.java:171) | at org.jboss.ejb.StatelessSessionEnterpriseContext$TimerServiceWrapper.createTimer(StatelessSessionEnterpriseContext.java:280) | at com.kbtflawt.server.ejb.DirectoryPoller.ejbTimeout(DirectoryPoller.java:247) | at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) | at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) | at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) | at java.lang.reflect.Method.invoke(Method.java:597) | at org.jboss.invocation.Invocation.performCall(Invocation.java:359) | at org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invoke(StatelessSessionContainer.java:237) | at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:158) | at org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invoke(StatelessSessionInstanceInterceptor.java:169) | at org.jboss.ejb.plugins.CallValidationInterceptor.invoke(CallValidationInterceptor.java:63) | at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:121) | at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:404) | at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:181) | at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:168) | at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:205) | at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:138) | at org.jboss.ejb.SessionContainer.internalInvoke(SessionContainer.java:648) | at org.jboss.ejb.Container.invoke(Container.java:960) | at org.jboss.ejb.txtimer.TimedObjectInvokerImpl.callTimeout(TimedObjectInvokerImpl.java:99) | at org.jboss.ejb.txtimer.TimerImpl$TimerTaskImpl.run(TimerImpl.java:561) | at java.util.TimerThread.mainLoop(Timer.java:512) | at java.util.TimerThread.run(Timer.java:462) | Caused by: org.jboss.util.NestedSQLException: Could not enlist in transaction on entering meta-aware object!; - nested throwable: (javax.transaction.SystemException: java.lang.Throwable: Unabled to enlist resource, see the previous warnings. tx=TransactionImple < ac, BasicAction: | -3f57fffe:884:47fdecfb:3566 status: ActionStatus.ABORT_ONLY >); - nested throwable: (org.jboss.resource.JBossResourceException: Could not enlist in transaction on entering meta-aware object!; - nested throwable: (javax.transaction.SystemException: java.lang.Throwable: Unabled to | enlist resource, see the previous warnings. tx=TransactionImple < ac, BasicAction: -3f57fffe:884:47fdecfb:3566 status: ActionStatus.ABORT_ONLY >)) | at org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:94) | at org.jboss.ejb.txtimer.GeneralPurposeDatabasePersistencePlugin.insertTimer(GeneralPurposeDatabasePersistencePlugin.java:199) | at org.jboss.ejb.txtimer.DatabasePersistencePolicy.insertTimer(DatabasePersistencePolicy.java:120) | ... 36 more | 11:34:26,609 ERROR [TimerImpl] Error invoking ejbTimeout: javax.ejb.EJBException: Failed to create timer | | | can someone give me some advice please? thanks Jeff View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4143125#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...