AQ Adapter error: Could not create XML document carrying AQ Headers

Question

I'm having problem with the AQ adapter (ADT) sample that comes with the SOA 10g install.
I am running 10.1.3.4 on XP, using Oracle XE.
I can use the sample sql script to enque and deque. However, when I deploy the sample ADT (BPEL project), I see errors in the opmn log. The BPEL instance is not even created.
I see another post with similar question, Re: Debugging BPEL when using Oracle AQ but no answer.
Any help is greatly appreciated. Thx!
----------------- err log --------------
<2009-07-15 00:04:31,656> <INFO> <collaxa> <ServerManager::loadProcesses> Done loading processes for all domains
<2009-07-15 00:04:32,031> <INFO> <default.collaxa.cube.activation> <AQ Adapter::Inbound> MessageReader_ctor: Initialized MessageReader for queue CUSTOMER_IN_QUEUE, consumer = null)
<2009-07-15 00:12:15,984> <ERROR> <default.collaxa.cube.activation> <AQ Adapter::Inbound> MessageReader_ReadMessage: Could not create XML document carrying AQ Headers: [Ljava.lang.StackTraceElement;@e7af3a
<2009-07-15 00:12:15,984> <ERROR> <default.collaxa.cube.activation> <AQ Adapter::Inbound>
java.lang.Exception: java.lang.NullPointerException
     at oracle.tip.adapter.aq.database.MessageReader.readMessage(MessageReader.java:750)
     at oracle.tip.adapter.aq.inbound.AQActivationSpecDequeuer.run(AQActivationSpecDequeuer.java:261)
     at oracle.tip.adapter.fw.jca.work.WorkerJob.go(WorkerJob.java:51)
     at oracle.tip.adapter.fw.common.ThreadPool.run(ThreadPool.java:280)
     at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.NullPointerException
     at oracle.oc4j.sql.proxy.StatementBCELProxy.oc4j_releaseToCache(StatementBCELProxy.java:67)
     at oracle.oc4j.sql.proxy.StatementBCELProxy.oc4j_releaseTarget(StatementBCELProxy.java:79)
     at oracle.oc4j.sql.proxy.SQLBCELProxy.oc4j_close(SQLBCELProxy.java:95)
     at oracle.oc4j.sql.proxy.StatementBCELProxy.close(StatementBCELProxy.java:92)
     at oracle.AQ.AQOracleQueue.destroyStmt(AQOracleQueue.java:3099)
     at oracle.AQ.AQOracleQueue.dequeue(AQOracleQueue.java:1793)
     at oracle.AQ.AQOracleQueue.dequeue(AQOracleQueue.java:1307)
     at oracle.tip.adapter.aq.database.MessageReader.readMessage(MessageReader.java:485)
     ... 4 more
<2009-07-15 00:12:16,203> <FATAL> <default.collaxa.cube.activation> <AdapterFramework::Inbound> Uncaught exception oracle.as.j2ee.transaction.tpc.ProtocolErrorWithNotification in JCA-work-instance:AQ Adapter-0 - cause: Branch [oracle.oc4j.sql.xa.EmulatedXAResource@14d9865, Xid( Global Id 34.5f.1e.a8.ff.ff.ff.ff.cd.b9.38.7d.22.01.00.00.7a.02.00.00.00.00.00.00, Format Id 1330790740, Branch Id 7c.e5.55.76.00.00.00.00.00.00.00.00.00.00.00.01), oracle.oc4j.sql.xa.EmulatedXAResource@14d9865, state={PREPARED}, exception error code=] in transaction Global Transaction Xid( Global Id 34.5f.1e.a8.ff.ff.ff.ff.cd.b9.38.7d.22.01.00.00.7a.02.00.00.00.00.00.00, Format Id 1330790740), type=orabpel, state=COMMITTING, time in completion or recovering=0)
....

Answer 1

thanks for the reply. I did look into that post, and couldn't found where to set that option either.
However, my PC was rebooted a few times today (I didn't change anything with BPEL), and I just re-ran the test now, that problem disappeared! It is working fine now.