Hi, I've a question concerning JBoss and JDBC. We're generating reports using JExcel and JDBC. After generating one report (we receive the DB-connections using JNDI), the ConnectionManager seems to close the DB-connection. Do we have to close the connection manually and get a "fresh" connection from the pool? Here is our Exception: 2008-03-27 19:22:07,501 INFO [org.jboss.resource.connectionmanager.CachedConnectionManager] Closing a connection for you. Please close them yourself: org.jboss.resource.adapter.jdbc.WrappedConnection@11b6923 java.lang.Throwable: STACKTRACE at org.jboss.resource.connectionmanager.CachedConnectionManager.registerConnection(CachedConnectionManager.java:290) at org.jboss.resource.connectionmanager.BaseConnectionManager2.allocateConnection(BaseConnectionManager2.java:417) at org.jboss.resource.connectionmanager.BaseConnectionManager2$ConnectionManagerProxy.allocateConnection(BaseConnectionManager2.java:842) at org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:88) at de.blb.rczl.onlinereports.common.report.BlbRcZlResourceManagerDefaultImpl.(BlbRcZlResourceManagerDefaultImpl.java:71) at de.blb.rczl.onlinereports.common.report.BlbRcZlResourceManagerDefaultImpl.(BlbRcZlResourceManagerDefaultImpl.java:47) at de.blb.rczl.onlinereports.ejb.BlbRcZlReportManager.onMessage(BlbRcZlReportManager.java:152) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.jboss.invocation.Invocation.performCall(Invocation.java:359) at org.jboss.ejb.MessageDrivenContainer$ContainerInterceptor.invoke(MessageDrivenContainer.java:495) at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:158) at org.jboss.ejb.plugins.MessageDrivenInstanceInterceptor.invoke(MessageDrivenInstanceInterceptor.java:116) 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:350) at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:181) at org.jboss.ejb.plugins.RunAsSecurityInterceptor.invoke(RunAsSecurityInterceptor.java:109) at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:205) at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:138) at org.jboss.ejb.MessageDrivenContainer.internalInvoke(MessageDrivenContainer.java:402) at org.jboss.ejb.Container.invoke(Container.java:960) at org.jboss.ejb.plugins.jms.JMSContainerInvoker.invoke(JMSContainerInvoker.java:987) at org.jboss.ejb.plugins.jms.JMSContainerInvoker$MessageListenerImpl.onMessage(JMSContainerInvoker.java:1287) at org.jboss.jms.asf.StdServerSession.onMessage(StdServerSession.java:266) at org.jboss.mq.SpyMessageConsumer.sessionConsumerProcessMessage(SpyMessageConsumer.java:891) at org.jboss.mq.SpyMessageConsumer.addMessage(SpyMessageConsumer.java:170) at org.jboss.mq.SpySession.run(SpySession.java:323) at org.jboss.jms.asf.StdServerSession.run(StdServerSession.java:194) at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:756) at java.lang.Thread.run(Thread.java:595) Regards, Sascha View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4139437#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...