Spawning thread in the stateful session bean

I ran into an interesting issue: I am spawning a thread inside
my stateful session bean's ejbCreate(...) method. The spawned
thread runs in an infinite loop until some stop signal. The
thread uses some BMP entity beans to access some data from DB,
it creates some BMP entity beans as well as creates another
stateful session bean in each iteration. The application ran
into a crash. Now I have a couple questions:
- First, is it an allowed operation to have a stateful session
bean spawn off threads? Am I violating the specs?
- Second, is it also allowed to have that thread create another
bmp entity bean and another stateful session bean? Again, am I
violating the specs also in here?
Your responses will be very much appreciated.
- Simon

From the EJB 2.0 Spec, Section 24.1.2:
<quote>
These networking functions are reserved for the EJB Container.
Allowing the enterprise bean to use these functions could compromise
security and decrease the Container’s ability to properly manage the
runtime environment.
• The enterprise bean must not attempt to manage threads. The
enterprise bean must not attempt to start, stop, suspend, or resume
a thread; or to change a thread’s priority or name. The enter-prise
bean must not attempt to manage thread groups.
<quote>
And, spawning threads in weblogic is highly discouraged in any
server-side component. An application should not be designed this
way.
Bill
Simon wrote:
I ran into an interesting issue: I am spawning a thread inside
my stateful session bean's ejbCreate(...) method. The spawned
thread runs in an infinite loop until some stop signal. The
thread uses some BMP entity beans to access some data from DB,
it creates some BMP entity beans as well as creates another
stateful session bean in each iteration. The application ran
into a crash. Now I have a couple questions:
- First, is it an allowed operation to have a stateful session
bean spawn off threads? Am I violating the specs?
- Second, is it also allowed to have that thread create another
bmp entity bean and another stateful session bean? Again, am I
violating the specs also in here?
Your responses will be very much appreciated.
- Simon

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         at oracle.jbo.uicli.binding.JUCtrlActionBinding.isActionEnabled(JUCtrlActionBinding.java:247)
         at com.kunteng.fabric.jclientview.MyJUNavigationBar._isEnabled(MyJUNavigationBar.java:1558)
         at com.kunteng.fabric.jclientview.MyJUNavigationBar._updateButtonStates(MyJUNavigationBar.java:1506)
         at com.kunteng.fabric.jclientview.MyJUNavigationBar$1.run(MyJUNavigationBar.java:1419)
         at java.awt.event.InvocationEvent.dispatch(Unknown Source)
         at java.awt.EventQueue.dispatchEvent(Unknown Source)
         at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
         at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
         at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
         at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
         at java.awt.EventDispatchThread.run(Unknown Source)
    ## Detail 0 ##
    oracle.oc4j.rmi.OracleRemoteException: Error resuming transaction
         at com.evermind.server.ejb.EJBTransactionManager.resumeRemote(EJBTransactionManager.java:202)
         at com.evermind.server.ejb.StatefulSessionEJBObject.OC4J_transactionPostSuspend(StatefulSessionEJBObject.java:784)
         at com.evermind.server.ejb.interceptor.system.TxBeanManagedInterceptor.invoke(TxBeanManagedInterceptor.java:44)
         at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:69)
         at com.evermind.server.ejb.interceptor.system.DMSInterceptor.invoke(DMSInterceptor.java:52)
         at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:69)
         at com.evermind.server.ejb.StatefulSessionEJBObject.OC4J_invokeMethod(StatefulSessionEJBObject.java:840)
         at RemoteBaseManageAppModule_StatefulSessionBeanWrapper4.doMessage(RemoteBaseManageAppModule_StatefulSessionBeanWrapper4.java:491)
         at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
         at java.lang.reflect.Method.invoke(Method.java:585)
         at com.evermind.server.rmi.RmiMethodCall.run(RmiMethodCall.java:53)
         at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
         at java.lang.Thread.run(Thread.java:595)
    at connection to /192.168.1.254
         at com.evermind.server.rmi.RMICall.EXCEPTION_ORIGINATES_FROM_THE_REMOTE_SERVER(RMICall.java:110)
         at com.evermind.server.rmi.RMICall.throwRecordedException(RMICall.java:128)
         at com.evermind.server.rmi.RMIClientConnection.obtainRemoteMethodResponse(RMIClientConnection.java:472)
         at com.evermind.server.rmi.RMIClientConnection.invokeMethod(RMIClientConnection.java:416)
         at com.evermind.server.rmi.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:63)
         at com.evermind.server.rmi.RecoverableRemoteInvocationHandler.invoke(RecoverableRemoteInvocationHandler.java:28)
         at com.evermind.server.ejb.StatefulSessionRemoteInvocationHandler.invoke(StatefulSessionRemoteInvocationHandler.java:31)
         at __Proxy6.doMessage(Unknown Source)
         at oracle.jbo.client.remote.ejb.RootApplicationModuleImpl.invokeDoMessage(RootApplicationModuleImpl.java:485)
         at oracle.jbo.client.remote.ejb.RootApplicationModuleImpl.doMessage(RootApplicationModuleImpl.java:325)
         at oracle.jbo.client.remote.ejb.EJBApplicationModuleImpl.doMessage(EJBApplicationModuleImpl.java:194)
         at oracle.jbo.client.remote.ApplicationModuleImpl.doMessage(ApplicationModuleImpl.java:6887)
         at oracle.jbo.client.remote.ApplicationModuleImpl.sendServiceMessage(ApplicationModuleImpl.java:1122)
         at oracle.jbo.client.remote.ApplicationModuleImpl.sendServiceMessage(ApplicationModuleImpl.java:1150)
         at oracle.jbo.client.remote.ApplicationModuleImpl.sendRequest2(ApplicationModuleImpl.java:1219)
         at oracle.jbo.client.remote.ApplicationModuleImpl.sendRequest(ApplicationModuleImpl.java:1187)
         at oracle.jbo.client.remote.ApplicationModuleImpl.sendRequestReceiveResponse(ApplicationModuleImpl.java:1234)
         at oracle.jbo.client.remote.ApplicationModuleImpl.sendRequestReceiveValues(ApplicationModuleImpl.java:1250)
         at oracle.jbo.client.remote.ApplicationModuleImpl.isRangeAt(ApplicationModuleImpl.java:3856)
         at oracle.jbo.client.remote.RowSetIteratorImpl.isRangeAtTop(RowSetIteratorImpl.java:1109)
         at oracle.jbo.client.remote.RowSetImpl.isRangeAtTop(RowSetImpl.java:861)
         at oracle.jbo.client.remote.ViewUsageImpl.isRangeAtTop(ViewUsageImpl.java:968)
         at oracle.jbo.uicli.binding.JUCtrlActionBinding.isOperationEnabled(JUCtrlActionBinding.java:409)
         at oracle.jbo.uicli.binding.JUCtrlActionBinding.isActionEnabled(JUCtrlActionBinding.java:247)
         at com.kunteng.fabric.jclientview.MyJUNavigationBar._isEnabled(MyJUNavigationBar.java:1558)
         at com.kunteng.fabric.jclientview.MyJUNavigationBar._updateButtonStates(MyJUNavigationBar.java:1506)
         at com.kunteng.fabric.jclientview.MyJUNavigationBar$1.run(MyJUNavigationBar.java:1419)
         at java.awt.event.InvocationEvent.dispatch(Unknown Source)
         at java.awt.EventQueue.dispatchEvent(Unknown Source)
         at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
         at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
         at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
         at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
         at java.awt.EventDispatchThread.run(Unknown Source)
         Nested exception is:
    javax.transaction.InvalidTransactionException: Cannot resume transaction that has been rolledback, rollback cause=Timed out
         at com.evermind.server.ApplicationServerTransaction.resume(ApplicationServerTransaction.java:330)
         at com.evermind.server.ApplicationServerTransactionManager.resume(ApplicationServerTransactionManager.java:494)
         at com.evermind.server.ApplicationServer$2.resume(ApplicationServer.java:4559)
         at com.evermind.server.ejb.EJBTransactionManager.resume(EJBTransactionManager.java:209)
         at com.evermind.server.ejb.EJBTransactionManager.resumeRemote(EJBTransactionManager.java:200)
         at com.evermind.server.ejb.StatefulSessionEJBObject.OC4J_transactionPostSuspend(StatefulSessionEJBObject.java:784)
         at com.evermind.server.ejb.interceptor.system.TxBeanManagedInterceptor.invoke(TxBeanManagedInterceptor.java:44)
         at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:69)
         at com.evermind.server.ejb.interceptor.system.DMSInterceptor.invoke(DMSInterceptor.java:52)
         at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:69)
         at com.evermind.server.ejb.StatefulSessionEJBObject.OC4J_invokeMethod(StatefulSessionEJBObject.java:840)
         at RemoteBaseManageAppModule_StatefulSessionBeanWrapper4.doMessage(RemoteBaseManageAppModule_StatefulSessionBeanWrapper4.java:491)
         at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
         at java.lang.reflect.Method.invoke(Method.java:585)
         at com.evermind.server.rmi.RmiMethodCall.run(RmiMethodCall.java:53)
         at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
         at java.lang.Thread.run(Thread.java:595)
    at connection to /192.168.1.254
         at oracle.oc4j.rmi.OracleRemoteException.receive(OracleRemoteException.java:123)
         at oracle.oc4j.rmi.RmiTransport.annotateException(RmiTransport.java:141)
         at com.evermind.server.rmi.RMIClientConnection.handleMethodInvocationResponse(RMIClientConnection.java:812)
         at com.evermind.server.rmi.RMIClientConnection.handleOrmiCommandResponse(RMIClientConnection.java:242)
         at com.evermind.server.rmi.RMIClientConnection.dispatchResponse(RMIClientConnection.java:197)
         at com.evermind.server.rmi.RMIClientConnection.processReceivedCommand(RMIClientConnection.java:179)
         at com.evermind.server.rmi.RMIConnection.handleCommand(RMIConnection.java:154)
         at com.evermind.server.rmi.RMIConnection.listenForOrmiCommands(RMIConnection.java:126)
         at com.evermind.server.rmi.RMIConnection.run(RMIConnection.java:105)
         at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:814)
         at java.lang.Thread.run(Unknown Source)

    when i use BC4J Test tool to connect to the Stateful Session Bean ,meet the same error .The full error message is
    oracle.jbo.JboException: JBO-29000: Error resuming transaction; nested exception is:
         javax.transaction.InvalidTransactionException: Cannot resume transaction that has been rolledback, rollback cause=Timed out
         at oracle.jbo.client.remote.ejb.RootApplicationModuleImpl.processRemoteJboException(RootApplicationModuleImpl.java:435)
         at oracle.jbo.client.remote.ejb.RootApplicationModuleImpl.doMessage(RootApplicationModuleImpl.java:333)
         at oracle.jbo.client.remote.ejb.EJBApplicationModuleImpl.doMessage(EJBApplicationModuleImpl.java:194)
         at oracle.jbo.client.remote.ApplicationModuleImpl.doMessage(ApplicationModuleImpl.java:6887)
         at oracle.jbo.client.remote.ApplicationModuleImpl.sendServiceMessage(ApplicationModuleImpl.java:1122)
         at oracle.jbo.client.remote.ApplicationModuleImpl.sendServiceMessage(ApplicationModuleImpl.java:1150)
         at oracle.jbo.client.remote.ApplicationModuleImpl.sendRequest2(ApplicationModuleImpl.java:1219)
         at oracle.jbo.client.remote.ApplicationModuleImpl.sendRequest(ApplicationModuleImpl.java:1187)
         at oracle.jbo.client.remote.ApplicationModuleImpl.createAndInitRow(ApplicationModuleImpl.java:3989)
         at oracle.jbo.client.remote.RowSetIteratorImpl.createAndInitRow(RowSetIteratorImpl.java:1602)
         at oracle.jbo.client.remote.RowSetIteratorImpl.createRow(RowSetIteratorImpl.java:1553)
         at oracle.jbo.client.remote.RowSetImpl.createRow(RowSetImpl.java:1022)
         at oracle.jbo.client.remote.ViewUsageImpl.createRow(ViewUsageImpl.java:1168)
         at oracle.jbo.jbotester.NavBar$rsInsert.doAction(NavBar.java:151)
         at oracle.jbo.jbotester.AbstractJboAction.actionPerformed(AbstractJboAction.java:81)
         at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1849)
         at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2169)
         at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
         at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
         at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:234)
         at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:231)
         at java.awt.Component.processMouseEvent(Component.java:5488)
         at javax.swing.JComponent.processMouseEvent(JComponent.java:3126)
         at java.awt.Component.processEvent(Component.java:5253)
         at java.awt.Container.processEvent(Container.java:1966)
         at java.awt.Component.dispatchEventImpl(Component.java:3955)
         at java.awt.Container.dispatchEventImpl(Container.java:2024)
         at java.awt.Component.dispatchEvent(Component.java:3803)
         at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212)
         at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3892)
         at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
         at java.awt.Container.dispatchEventImpl(Container.java:2010)
         at java.awt.Window.dispatchEventImpl(Window.java:1774)
         at java.awt.Component.dispatchEvent(Component.java:3803)
         at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
         at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
         at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
         at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
         at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
         at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
    ## Detail 0 ##
    oracle.oc4j.rmi.OracleRemoteException: Error resuming transaction
         at com.evermind.server.ejb.EJBTransactionManager.resumeRemote(EJBTransactionManager.java:202)
         at com.evermind.server.ejb.StatefulSessionEJBObject.OC4J_transactionPostSuspend(StatefulSessionEJBObject.java:784)
         at com.evermind.server.ejb.interceptor.system.TxBeanManagedInterceptor.invoke(TxBeanManagedInterceptor.java:44)
         at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:69)
         at com.evermind.server.ejb.interceptor.system.DMSInterceptor.invoke(DMSInterceptor.java:52)
         at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:69)
         at com.evermind.server.ejb.StatefulSessionEJBObject.OC4J_invokeMethod(StatefulSessionEJBObject.java:840)
         at RemoteBaseManageAppModule_StatefulSessionBeanWrapper4.doMessage(RemoteBaseManageAppModule_StatefulSessionBeanWrapper4.java:491)
         at sun.reflect.GeneratedMethodAccessor20.invoke(Unknown Source)
         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
         at java.lang.reflect.Method.invoke(Method.java:585)
         at com.evermind.server.rmi.RmiMethodCall.run(RmiMethodCall.java:53)
         at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
         at java.lang.Thread.run(Thread.java:595)
    at connection to FUWUQI/192.168.1.254
         at com.evermind.server.rmi.RMICall.EXCEPTION_ORIGINATES_FROM_THE_REMOTE_SERVER(RMICall.java:110)
         at com.evermind.server.rmi.RMICall.throwRecordedException(RMICall.java:128)
         at com.evermind.server.rmi.RMIClientConnection.obtainRemoteMethodResponse(RMIClientConnection.java:472)
         at com.evermind.server.rmi.RMIClientConnection.invokeMethod(RMIClientConnection.java:416)
         at com.evermind.server.rmi.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:63)
         at com.evermind.server.rmi.RecoverableRemoteInvocationHandler.invoke(RecoverableRemoteInvocationHandler.java:28)
         at com.evermind.server.ejb.StatefulSessionRemoteInvocationHandler.invoke(StatefulSessionRemoteInvocationHandler.java:31)
         at __Proxy2.doMessage(Unknown Source)
         at oracle.jbo.client.remote.ejb.RootApplicationModuleImpl.invokeDoMessage(RootApplicationModuleImpl.java:485)
         at oracle.jbo.client.remote.ejb.RootApplicationModuleImpl.doMessage(RootApplicationModuleImpl.java:325)
         at oracle.jbo.client.remote.ejb.EJBApplicationModuleImpl.doMessage(EJBApplicationModuleImpl.java:194)
         at oracle.jbo.client.remote.ApplicationModuleImpl.doMessage(ApplicationModuleImpl.java:6887)
         at oracle.jbo.client.remote.ApplicationModuleImpl.sendServiceMessage(ApplicationModuleImpl.java:1122)
         at oracle.jbo.client.remote.ApplicationModuleImpl.sendServiceMessage(ApplicationModuleImpl.java:1150)
         at oracle.jbo.client.remote.ApplicationModuleImpl.sendRequest2(ApplicationModuleImpl.java:1219)
         at oracle.jbo.client.remote.ApplicationModuleImpl.sendRequest(ApplicationModuleImpl.java:1187)
         at oracle.jbo.client.remote.ApplicationModuleImpl.createAndInitRow(ApplicationModuleImpl.java:3989)
         at oracle.jbo.client.remote.RowSetIteratorImpl.createAndInitRow(RowSetIteratorImpl.java:1602)
         at oracle.jbo.client.remote.RowSetIteratorImpl.createRow(RowSetIteratorImpl.java:1553)
         at oracle.jbo.client.remote.RowSetImpl.createRow(RowSetImpl.java:1022)
         at oracle.jbo.client.remote.ViewUsageImpl.createRow(ViewUsageImpl.java:1168)
         at oracle.jbo.jbotester.NavBar$rsInsert.doAction(NavBar.java:151)
         at oracle.jbo.jbotester.AbstractJboAction.actionPerformed(AbstractJboAction.java:81)
         at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1849)
         at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2169)
         at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
         at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
         at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:234)
         at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:231)
         at java.awt.Component.processMouseEvent(Component.java:5488)
         at javax.swing.JComponent.processMouseEvent(JComponent.java:3126)
         at java.awt.Component.processEvent(Component.java:5253)
         at java.awt.Container.processEvent(Container.java:1966)
         at java.awt.Component.dispatchEventImpl(Component.java:3955)
         at java.awt.Container.dispatchEventImpl(Container.java:2024)
         at java.awt.Component.dispatchEvent(Component.java:3803)
         at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212)
         at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3892)
         at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
         at java.awt.Container.dispatchEventImpl(Container.java:2010)
         at java.awt.Window.dispatchEventImpl(Window.java:1774)
         at java.awt.Component.dispatchEvent(Component.java:3803)
         at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
         at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
         at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
         at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
         at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
         at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
         Nested exception is:
    javax.transaction.InvalidTransactionException: Cannot resume transaction that has been rolledback, rollback cause=Timed out
         at com.evermind.server.ApplicationServerTransaction.resume(ApplicationServerTransaction.java:330)
         at com.evermind.server.ApplicationServerTransactionManager.resume(ApplicationServerTransactionManager.java:494)
         at com.evermind.server.ApplicationServer$2.resume(ApplicationServer.java:4559)
         at com.evermind.server.ejb.EJBTransactionManager.resume(EJBTransactionManager.java:209)
         at com.evermind.server.ejb.EJBTransactionManager.resumeRemote(EJBTransactionManager.java:200)
         at com.evermind.server.ejb.StatefulSessionEJBObject.OC4J_transactionPostSuspend(StatefulSessionEJBObject.java:784)
         at com.evermind.server.ejb.interceptor.system.TxBeanManagedInterceptor.invoke(TxBeanManagedInterceptor.java:44)
         at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:69)
         at com.evermind.server.ejb.interceptor.system.DMSInterceptor.invoke(DMSInterceptor.java:52)
         at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:69)
         at com.evermind.server.ejb.StatefulSessionEJBObject.OC4J_invokeMethod(StatefulSessionEJBObject.java:840)
         at RemoteBaseManageAppModule_StatefulSessionBeanWrapper4.doMessage(RemoteBaseManageAppModule_StatefulSessionBeanWrapper4.java:491)
         at sun.reflect.GeneratedMethodAccessor20.invoke(Unknown Source)
         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
         at java.lang.reflect.Method.invoke(Method.java:585)
         at com.evermind.server.rmi.RmiMethodCall.run(RmiMethodCall.java:53)
         at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
         at java.lang.Thread.run(Thread.java:595)
    at connection to FUWUQI/192.168.1.254
         at oracle.oc4j.rmi.OracleRemoteException.receive(OracleRemoteException.java:123)
         at oracle.oc4j.rmi.RmiTransport.annotateException(RmiTransport.java:141)
         at com.evermind.server.rmi.RMIClientConnection.handleMethodInvocationResponse(RMIClientConnection.java:812)
         at com.evermind.server.rmi.RMIClientConnection.handleOrmiCommandResponse(RMIClientConnection.java:242)
         at com.evermind.server.rmi.RMIClientConnection.dispatchResponse(RMIClientConnection.java:197)
         at com.evermind.server.rmi.RMIClientConnection.processReceivedCommand(RMIClientConnection.java:179)
         at com.evermind.server.rmi.RMIConnection.handleCommand(RMIConnection.java:154)
         at com.evermind.server.rmi.RMIConnection.listenForOrmiCommands(RMIConnection.java:126)
         at com.evermind.server.rmi.RMIConnection.run(RMIConnection.java:105)
         at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:814)
         at java.lang.Thread.run(Thread.java:595)
    ----- LEVEL 1: DETAIL 0 -----
    oracle.oc4j.rmi.OracleRemoteException: Error resuming transaction
         at com.evermind.server.ejb.EJBTransactionManager.resumeRemote(EJBTransactionManager.java:202)
         at com.evermind.server.ejb.StatefulSessionEJBObject.OC4J_transactionPostSuspend(StatefulSessionEJBObject.java:784)
         at com.evermind.server.ejb.interceptor.system.TxBeanManagedInterceptor.invoke(TxBeanManagedInterceptor.java:44)
         at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:69)
         at com.evermind.server.ejb.interceptor.system.DMSInterceptor.invoke(DMSInterceptor.java:52)
         at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:69)
         at com.evermind.server.ejb.StatefulSessionEJBObject.OC4J_invokeMethod(StatefulSessionEJBObject.java:840)
         at RemoteBaseManageAppModule_StatefulSessionBeanWrapper4.doMessage(RemoteBaseManageAppModule_StatefulSessionBeanWrapper4.java:491)
         at sun.reflect.GeneratedMethodAccessor20.invoke(Unknown Source)
         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
         at java.lang.reflect.Method.invoke(Method.java:585)
         at com.evermind.server.rmi.RmiMethodCall.run(RmiMethodCall.java:53)
         at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
         at java.lang.Thread.run(Thread.java:595)
    at connection to FUWUQI/192.168.1.254
         at com.evermind.server.rmi.RMICall.EXCEPTION_ORIGINATES_FROM_THE_REMOTE_SERVER(RMICall.java:110)
         at com.evermind.server.rmi.RMICall.throwRecordedException(RMICall.java:128)
         at com.evermind.server.rmi.RMIClientConnection.obtainRemoteMethodResponse(RMIClientConnection.java:472)
         at com.evermind.server.rmi.RMIClientConnection.invokeMethod(RMIClientConnection.java:416)
         at com.evermind.server.rmi.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:63)
         at com.evermind.server.rmi.RecoverableRemoteInvocationHandler.invoke(RecoverableRemoteInvocationHandler.java:28)
         at com.evermind.server.ejb.StatefulSessionRemoteInvocationHandler.invoke(StatefulSessionRemoteInvocationHandler.java:31)
         at __Proxy2.doMessage(Unknown Source)
         at oracle.jbo.client.remote.ejb.RootApplicationModuleImpl.invokeDoMessage(RootApplicationModuleImpl.java:485)
         at oracle.jbo.client.remote.ejb.RootApplicationModuleImpl.doMessage(RootApplicationModuleImpl.java:325)
         at oracle.jbo.client.remote.ejb.EJBApplicationModuleImpl.doMessage(EJBApplicationModuleImpl.java:194)
         at oracle.jbo.client.remote.ApplicationModuleImpl.doMessage(ApplicationModuleImpl.java:6887)
         at oracle.jbo.client.remote.ApplicationModuleImpl.sendServiceMessage(ApplicationModuleImpl.java:1122)
         at oracle.jbo.client.remote.ApplicationModuleImpl.sendServiceMessage(ApplicationModuleImpl.java:1150)
         at oracle.jbo.client.remote.ApplicationModuleImpl.sendRequest2(ApplicationModuleImpl.java:1219)
         at oracle.jbo.client.remote.ApplicationModuleImpl.sendRequest(ApplicationModuleImpl.java:1187)
         at oracle.jbo.client.remote.ApplicationModuleImpl.createAndInitRow(ApplicationModuleImpl.java:3989)
         at oracle.jbo.client.remote.RowSetIteratorImpl.createAndInitRow(RowSetIteratorImpl.java:1602)
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  • Stateful Session Bean Initialization (EJB 3.0)

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         Truncated. see log file for complete stacktrace
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         Truncated. see log file for complete stacktrace
    >
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    Caused By: java.io.IOException: No EJBs found in the ejb-jar file {0}. Please ensure the ejb-jar contains EJB declarations via an ejb-jar.xml deployment descriptor or at least one class annotated with the @Stateless, @Stateful or @MessageDriven EJB annotation.
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         at weblogic.application.internal.flow.ModuleListenerInvoker.prepare(ModuleListenerInvoker.java:199)
         Truncated. see log file for complete stacktrace
    >
    #### Cannot run application MyTest1 due to error deploying to IntegratedWebLogicServer.
    [09:48:54 PM] #### Deployment incomplete. ####
    [09:48:54 PM] Remote deployment failed (oracle.jdevimpl.deploy.common.Jsr88RemoteDeployer)
    [Application MyTest1 stopped and undeployed from Server Instance IntegratedWebLogicServer]
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    package test.core;
    import java.util.ArrayList;
    import java.util.List;
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    import javax.ejb.Remote;
    import javax.ejb.Stateful;
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    sincerely
    Israel S Llorens

    not working... i tried to make the stateful session bean Control.. and is still not working the error i get now is this one:
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         Truncated. see log file for complete stacktrace
    Caused By: weblogic.deployment.EnvironmentException: [J2EE:160200]Error resolving ejb-ref 'gecu.view.LoginBean/controlBean' from module 'GeCU_Web_view_root' of application 'GeCU_Web'. The ejb-ref does not have an ejb-link and the JNDI name of the target bean has not been specified. Attempts to automatically link the ejb-ref to its target bean failed because no EJBs in the application were found to implement the 'gecu.model.ControlSession' interface. Please link or map this ejb-ref to its target EJB and ensure the interfaces declared in the ejb-ref are correct.
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         at weblogic.servlet.internal.WebAppModule.activateContexts(WebAppModule.java:1497)
         Truncated. see log file for complete stacktrace
    >
    <04-jun-2010 16H29' CEST> <Error> <Deployer> <BEA-149202> <Encountered an exception while attempting to commit the 9 task for the application 'GeCU_Web'.>
    <04-jun-2010 16H29' CEST> <Warning> <Deployer> <BEA-149004> <Failures were detected while initiating deploy task for application 'GeCU_Web'.>
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    weblogic.application.ModuleException: Could not setup environment
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         at weblogic.servlet.internal.WebAppModule.activate(WebAppModule.java:442)
         at weblogic.application.internal.flow.ModuleStateDriver$2.next(ModuleStateDriver.java:375)
         at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:41)
         at weblogic.application.internal.flow.ModuleStateDriver.activate(ModuleStateDriver.java:95)
         Truncated. see log file for complete stacktrace
    Caused By: weblogic.deployment.EnvironmentException: [J2EE:160200]Error resolving ejb-ref 'gecu.view.LoginBean/controlBean' from module 'GeCU_Web_view_root' of application 'GeCU_Web'. The ejb-ref does not have an ejb-link and the JNDI name of the target bean has not been specified. Attempts to automatically link the ejb-ref to its target bean failed because no EJBs in the application were found to implement the 'gecu.model.ControlSession' interface. Please link or map this ejb-ref to its target EJB and ensure the interfaces declared in the ejb-ref are correct.
         at weblogic.deployment.BaseEnvironmentBuilder.autowireEJBRef(BaseEnvironmentBuilder.java:427)
         at weblogic.deployment.EnvironmentBuilder.addEJBReferences(EnvironmentBuilder.java:502)
         at weblogic.servlet.internal.CompEnv.activate(CompEnv.java:157)
         at weblogic.servlet.internal.WebAppServletContext.activate(WebAppServletContext.java:3117)
         at weblogic.servlet.internal.WebAppModule.activateContexts(WebAppModule.java:1497)
         Truncated. see log file for complete stacktrace
    >
    [04:29:35 PM] #### Deployment incomplete. ####
    [04:29:35 PM] Remote deployment failed

  • How to intantiate Stateful session bean in EJB 3 ?

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    Just the spec. NetBeans should only be providing the ability to add an ejbCreate method if the bean exposes a Local or Remote 2.x view.
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