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passionatepaul
 Post subject: Problem WAS ExtendedJTATransaction not avail job submission
PostPosted: Tue Feb 14, 2006 11:34 pm 
Newbie

Joined: Tue Feb 14, 2006 8:25 pm
Posts: 3
Hibernate version: 3.1.2

Application Server: Websphere version 6.0.1

Application Server: IBM DB2 v8.1

Using Stateless Session bean with Hibernate

Problem
    I’m having problem with the WAS6 ExtendedJTATransaction when submitting a job to execute a method from the Quartz scheduler. Refer to dump 1 below for details. This problem does not occur when the execute method is called directly. In doing research I discovered the paper
    “Problem with WAS ExtendedJTATransaction not available when using MDB” in http://opensource2.atlassian.com/projects/hibernate/browse/HHH-1287 which states there is similar problem when using Message Driven beans. They suggest as a work around to change code in the Hibernate ConnectionManager method afterTransaction to call a new method isAgressiveReleaseNoTransactionCheck instead of method isAgressiveRelease. Refer to code below for details.

    I made these changes describe above but then got the same error after calling ConnectionManager method afterStatement. See dump 2 for details.
    I then made similar changes to call isAgressiveRelease and it is now working. Refer to code below for details

    I am writing this to ensure that future releases have this bug fix and if there are any implications in the code I have changed.


ConnectionManager Code changes to fix problem as describe in “Problem with WAS ExtendedJTATransaction not available when using MDB”

Code:
    public void afterTransaction()
    {
        if (isAfterTransactionRelease())
        {
            aggressiveRelease();
        }
        else if (isAggressiveReleaseNoTransactionCheck() && batcher.hasOpenResources())
        {
            log.info("forcing batcher resource cleanup on transaction completion; forgot to close ScrollableResults/Iterator?");
            batcher.closeStatements();
            aggressiveRelease();
        }
        else if (isOnCloseRelease())
        {
            //     log a message about potential connection leaks
            log.debug("transaction completed on session with on_close connection release mode; be sure to close the session to release JDBC resources!");
        }
        batcher.unsetTransactionTimeout();
}
   
private boolean isAggressiveReleaseNoTransactionCheck()
    {
        if (releaseMode == ConnectionReleaseMode.AFTER_STATEMENT)
        {
            return true;
        }

        boolean inAutoCommitState;
        try
        {
            inAutoCommitState = isAutoCommit();
        }
        catch (SQLException e)
        {
            //        assume we are in an auto-commit state
            inAutoCommitState = true;
        }
        return releaseMode == ConnectionReleaseMode.AFTER_TRANSACTION && inAutoCommitState;
    }


ConnectionManager Code changes to fix problem with afterStatement
Code:
   public boolean isAggressiveRelease()
    {
        boolean inAutoCommitState;
        boolean noTranactionInProgress = true;

        try
        {
             noTranactionInProgress = !callback.isTransactionInProgress();
        }
        catch (HibernateException he)
        {
            // This is a workaround forThe problem occurs when the afterCompletion callback event fires
            // and the ConnectionManager.isAggressiveRelease() method is called from ConnectionManager.afterSatement().
        }
        try
        {
            inAutoCommitState = noTranactionInProgress && isAutoCommit();
        }
        catch (SQLException e)
        {
            // assume we are in an auto-commit state
            inAutoCommitState = true;
        }
        // release connections
        return releaseMode == ConnectionReleaseMode.AFTER_STATEMENT
                || (releaseMode == ConnectionReleaseMode.AFTER_TRANSACTION && inAutoCommitState);
    }


Dump 1 - Initial Problem
Code:
rg.hibernate.HibernateException: javax.naming.NameNotFoundException: Name comp/websphere not found in context "java:".
   at au.com.zurich.greenslips.framework.WebSphereExtendedJTATransactionLookup$TransactionManagerAdapter$TransactionAdapter.<init>(WebSphereExtendedJTATransactionLookup.java:155)
   at au.com.zurich.greenslips.framework.WebSphereExtendedJTATransactionLookup$TransactionManagerAdapter$TransactionAdapter.<init>(WebSphereExtendedJTATransactionLookup.java:141)
   at au.com.zurich.greenslips.framework.WebSphereExtendedJTATransactionLookup$TransactionManagerAdapter.getTransaction(WebSphereExtendedJTATransactionLookup.java:109)
   at au.com.zurich.greenslips.framework.CMTTransaction.getTransaction(CMTTransaction.java:103)
   at au.com.zurich.greenslips.framework.CMTTransaction.isActive(CMTTransaction.java:122)
   at org.hibernate.jdbc.JDBCContext.isTransactionInProgress(JDBCContext.java:178)
   at org.hibernate.jdbc.ConnectionManager.isAggressiveRelease(ConnectionManager.java:142)
   at org.hibernate.jdbc.ConnectionManager.afterStatement(ConnectionManager.java:170)
   at org.hibernate.jdbc.AbstractBatcher.closePreparedStatement(AbstractBatcher.java:480)
   at org.hibernate.jdbc.AbstractBatcher.closeStatement(AbstractBatcher.java:218)
   at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:198)
   at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:230)
   at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:141)
   at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:296)
   at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
   at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:980)
   at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:353)
   at org.hibernate.transaction.CacheSynchronization.beforeCompletion(CacheSynchronization.java:63)
   at au.com.zurich.greenslips.framework.WebSphereExtendedJTATransactionLookup$1.invoke(WebSphereExtendedJTATransactionLookup.java:191)
   at $Proxy2.beforeCompletion(Unknown Source)
   at com.ibm.ws.jtaextensions.SynchronizationCallbackWrapper.beforeCompletion(SynchronizationCallbackWrapper.java:65)
   at com.ibm.ws.Transaction.JTA.RegisteredSyncs.distributeBefore(RegisteredSyncs.java:171)
   at com.ibm.ws.Transaction.JTA.TransactionImpl.prePrepare(TransactionImpl.java:2109)
   at com.ibm.ws.Transaction.JTA.TransactionImpl.stage1CommitProcessing(TransactionImpl.java:1538)
   at com.ibm.ws.Transaction.JTA.TransactionImpl.commit(TransactionImpl.java:1372)
   at com.ibm.ws.Transaction.JTA.TranManagerImpl.commit(TranManagerImpl.java:231)
   at com.ibm.ws.Transaction.JTA.TranManagerSet.commit(TranManagerSet.java:156)
   at com.ibm.ejs.csi.TranStrategy.commit(TranStrategy.java:716)
   at com.ibm.ejs.csi.TranStrategy.postInvoke(TranStrategy.java:167)
   at com.ibm.ejs.csi.TransactionControlImpl.postInvoke(TransactionControlImpl.java:564)
   at com.ibm.ejs.container.EJSContainer.postInvoke(EJSContainer.java:3798)
   at au.com.zurich.greenslips.framework.EJSLocalStatelessDispatcher_c0400e9a.dispatch(EJSLocalStatelessDispatcher_c0400e9a.java:43)
   at au.com.zurich.greenslips.stp.cmd.StpTaskJobHelper.update(StpTaskJobHelper.java:63)
   at au.com.zurich.greenslips.stp.cmd.StpTaskJob.saveState(StpTaskJob.java:902)
   at au.com.zurich.greenslips.stp.cmd.StpTaskJob.postProcessStatusUpdate(StpTaskJob.java:450)
   at au.com.zurich.greenslips.stp.cmd.StpTaskJob.processRq(StpTaskJob.java:384)
   at au.com.zurich.greenslips.stp.cmd.StpTaskJob.execute(StpTaskJob.java:241)
   at org.quartz.core.JobRunShell.run(JobRunShell.java:191)
   at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:516)

Dump 2 - After Statement Problem
Code:
[org.hibernate.HibernateException: javax.naming.NameNotFoundException: Name comp/websphere not found in context "java:".
   at au.com.zurich.greenslips.framework.WebSphereExtendedJTATransactionLookup$TransactionManagerAdapter$TransactionAdapter.<init>(WebSphereExtendedJTATransactionLookup.java:155)
   at au.com.zurich.greenslips.framework.WebSphereExtendedJTATransactionLookup$TransactionManagerAdapter$TransactionAdapter.<init>(WebSphereExtendedJTATransactionLookup.java:141)
   at au.com.zurich.greenslips.framework.WebSphereExtendedJTATransactionLookup$TransactionManagerAdapter.getTransaction(WebSphereExtendedJTATransactionLookup.java:109)
   at au.com.zurich.greenslips.framework.CMTTransaction.getTransaction(CMTTransaction.java:103)
   at au.com.zurich.greenslips.framework.CMTTransaction.isActive(CMTTransaction.java:122)
   at org.hibernate.jdbc.JDBCContext.isTransactionInProgress(JDBCContext.java:178)
   at org.hibernate.jdbc.ConnectionManager.isAggressiveRelease(ConnectionManager.java:155)
   at org.hibernate.jdbc.ConnectionManager.afterStatement(ConnectionManager.java:225)
   at org.hibernate.jdbc.AbstractBatcher.closePreparedStatement(AbstractBatcher.java:480)
   at org.hibernate.jdbc.AbstractBatcher.closeStatement(AbstractBatcher.java:218)
   at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:198)
   at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:230)
   at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:141)
   at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:296)
   at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
   at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:980)
   at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:353)
   at org.hibernate.transaction.CacheSynchronization.beforeCompletion(CacheSynchronization.java:63)
   at au.com.zurich.greenslips.framework.WebSphereExtendedJTATransactionLookup$1.invoke(WebSphereExtendedJTATransactionLookup.java:191)
   at $Proxy2.beforeCompletion(Unknown Source)
   at com.ibm.ws.jtaextensions.SynchronizationCallbackWrapper.beforeCompletion(SynchronizationCallbackWrapper.java:65)
   at com.ibm.ws.Transaction.JTA.RegisteredSyncs.distributeBefore(RegisteredSyncs.java:171)
   at com.ibm.ws.Transaction.JTA.TransactionImpl.prePrepare(TransactionImpl.java:2109)
   at com.ibm.ws.Transaction.JTA.TransactionImpl.stage1CommitProcessing(TransactionImpl.java:1538)
   at com.ibm.ws.Transaction.JTA.TransactionImpl.commit(TransactionImpl.java:1372)
   at com.ibm.ws.Transaction.JTA.TranManagerImpl.commit(TranManagerImpl.java:231)
   at com.ibm.ws.Transaction.JTA.TranManagerSet.commit(TranManagerSet.java:156)
   at com.ibm.ejs.csi.TranStrategy.commit(TranStrategy.java:716)
   at com.ibm.ejs.csi.TranStrategy.postInvoke(TranStrategy.java:167)
   at com.ibm.ejs.csi.TransactionControlImpl.postInvoke(TransactionControlImpl.java:564)
   at com.ibm.ejs.container.EJSContainer.postInvoke(EJSContainer.java:3798)
   at au.com.zurich.greenslips.framework.EJSLocalStatelessDispatcher_c0400e9a.dispatch(EJSLocalStatelessDispatcher_c0400e9a.java:43)
   at au.com.zurich.greenslips.stp.cmd.StpTaskJobHelper.update(StpTaskJobHelper.java:63)
   at au.com.zurich.greenslips.stp.cmd.StpTaskJob.saveState(StpTaskJob.java:902)
   at au.com.zurich.greenslips.stp.cmd.StpTaskJob.processDoc(StpTaskJob.java:523)
   at au.com.zurich.greenslips.stp.cmd.StpTaskJob.processRq(StpTaskJob.java:347)
   at au.com.zurich.greenslips.stp.cmd.StpTaskJob.execute(StpTaskJob.java:241)
   at org.quartz.core.JobRunShell.run(JobRunShell.java:191)
   at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:516)
Caused by: javax.naming.NameNotFoundException: Name comp/websphere not found in context "java:".
   at com.ibm.ws.naming.ipbase.NameSpace.getParentCtxInternal(NameSpace.java:1716)
   at com.ibm.ws.naming.ipbase.NameSpace.lookupInternal(NameSpace.java:1062)
   at com.ibm.ws.naming.ipbase.NameSpace.lookup(NameSpace.java:985)
   at com.ibm.ws.naming.urlbase.UrlContextImpl.lookup(UrlContextImpl.java:1263)
   at com.ibm.ws.naming.java.javaURLContextRoot.lookup(javaURLContextRoot.java:198)
   at com.ibm.ws.naming.java.javaURLContextRoot.lookup(javaURLContextRoot.java:139)
   at javax.naming.InitialContext.lookup(InitialContext.java:361)
   at au.com.zurich.greenslips.framework.WebSphereExtendedJTATransactionLookup$TransactionManagerAdapter$TransactionAdapter.<init>(WebSphereExtendedJTATransactionLookup.java:146)
   ... 38 more
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