ORA-02051: another session or branch in same transaction failed or finalized

Question

I have a problem with my XA Transaction.

If you look at the picture, the XA Transaction flow order is numbered. The call number 3 is the half-workaround I have found so far to half-solve the problem. I mean, if I don't make the SELECT 1 query to Database 2 before accesing the ejb 2, the Transaction fails.

I say half-solves the problem, because when I put the SELECT 1 query, the Servlet doesn't crash and I can complete the Transaction. But this workaround is not applicable in other scenarios where for example an external B2B client don't have and shouldn't have access to our internal Database 2, so they can't make the SELECT 1 query to fix it.

The concrete exception point is in the Hibernate beforeComplete Synchronization. It crashes when Hibernate is flushing cache to Database 2 but Oracle throws this error:

ORA-02051: another session or branch in same transaction failed or finalized

After spending days making proves and reading the OMG "Transaction Service Specification" and chapter 10 of the book "Mastering EJB" i cannot understand why my XA Transaction fails ;)

I Would be very grateful if someone can help me in either way.

The Full stack trace is this:

> 2014-11-11 18:27:27,365 DEBUG [ORB.thread.pool : 0] [LogicalConnectionImpl] [f59d55f3-8361-4c80-975c-8df36f89b7c3] Obtained JDBC connection
2014-11-11 18:27:27,428 DEBUG [ORB.thread.pool : 0] [SqlExceptionHelper] [f59d55f3-8361-4c80-975c-8df36f89b7c3] could not execute statement [n/a]
java.sql.SQLSyntaxErrorException: ORA-02051: otra sesi?? bifurcaci??ha fallado o terminado en la misma transacci??
    at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:445)
    at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:396)
    at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:879)
    at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:450)
    at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:192)
    at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:531)
    at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:207)
    at oracle.jdbc.driver.T4CPreparedStatement.executeForRows(T4CPreparedStatement.java:1044)
    at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1329)
    at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3584)
    at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:3665)
    at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeUpdate(OraclePreparedStatementWrapper.java:1352)
    at com.ibm.ws.rsadapter.jdbc.WSJdbcPreparedStatement.pmiExecuteUpdate(WSJdbcPreparedStatement.java:1185)
    at com.ibm.ws.rsadapter.jdbc.WSJdbcPreparedStatement.executeUpdate(WSJdbcPreparedStatement.java:802)
    at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:186)
    at org.hibernate.engine.jdbc.batch.internal.NonBatchingBatch.addToBatch(NonBatchingBatch.java:58)
    at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3079)
    at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3521)
    at org.hibernate.action.internal.EntityInsertAction.execute(EntityInsertAction.java:88)
    at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:393)
    at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:385)
    at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:301)
    at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:349)
    at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:56)
    at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1159)
    at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:404)
    at org.hibernate.engine.transaction.synchronization.internal.SynchronizationCallbackCoordinatorNonTrackingImpl.beforeCompletion(SynchronizationCallbackCoordinatorNonTrackingImpl.java:106)
    at org.hibernate.engine.transaction.synchronization.internal.RegisteredSynchronization.beforeCompletion(RegisteredSynchronization.java:53)
    at com.ibm.ws.uow.ComponentContextSynchronizationWrapper.beforeCompletion(ComponentContextSynchronizationWrapper.java:65)
    at com.ibm.tx.jta.impl.RegisteredSyncs.coreDistributeBefore(RegisteredSyncs.java:291)
    at com.ibm.ws.tx.jta.RegisteredSyncs.distributeBefore(RegisteredSyncs.java:153)
    at com.ibm.ws.tx.jta.TransactionImpl.prePrepare(TransactionImpl.java:2339)
    at com.ibm.tx.jta.impl.TransactionImpl.internalPrepare(TransactionImpl.java:1422)
    at com.ibm.ws.Transaction.JTS.TransactionWrapper.prepare(TransactionWrapper.java:204)
    at com.ibm.ws.Transaction.JTS.WSCoordinatorImpl.prepare(WSCoordinatorImpl.java:144)
    at com.ibm.ws.Transaction.JTS._WSCoordinatorImplBase._invoke(_WSCoordinatorImplBase.java:50)
    at com.ibm.CORBA.iiop.ServerDelegate.dispatchInvokeHandler(ServerDelegate.java:669)
    at com.ibm.CORBA.iiop.ServerDelegate.dispatch(ServerDelegate.java:523)
    at com.ibm.rmi.iiop.ORB.process(ORB.java:523)
    at com.ibm.CORBA.iiop.ORB.process(ORB.java:1575)
    at com.ibm.rmi.iiop.Connection.doRequestWork(Connection.java:3039)
    at com.ibm.rmi.iiop.Connection.doWork(Connection.java:2922)
    at com.ibm.rmi.iiop.WorkUnitImpl.doWork(WorkUnitImpl.java:64)
    at com.ibm.ejs.oa.pool.PooledThread.run(ThreadPool.java:118)
    at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1815)

UPDATE:

Same use case WORKS FINE on Wildfly attacking either an Oracle Database Server, Oracle XE or Postgresql. So it seams it's a WAS problem. What do you think?