I used the datasource in a web container as below. No EJB, JMS, or concurrency is involved. In oracle-xa-ds.xml, the track-connection-by-tx is true. JBoss is 3.2.3

1. get the UserTransaction
UserTransaction ut=...(from JNDI).
ut.begin();
2. get Connection
Connection con=... (from JNDI).
3. does some database updates.
4. commit
con.close();
ut.commit();

The first round is good. However, when it comes to second round, I got an exception at step 2.

XAException: tx=TransactionImpl:XidImpl [FormatId=257, GlobalId=jasonlaptop//27, BranchQual=] errorCode=XAER_PROTO
javax.transaction.xa.XAException
at oracle.jdbc.xa.OracleXAResource.disallowLocalTxnMode(OracleXAResource.java:1047)
at oracle.jdbc.xa.client.OracleXAResource.start(OracleXAResource.java:153)
at org.jboss.resource.adapter.jdbc.xa.XAManagedConnection.start(XAManagedConnection.java:143)
at org.jboss.tm.TransactionImpl.startResource(TransactionImpl.java:1148)
at org.jboss.tm.TransactionImpl.enlistResource(TransactionImpl.java:636)
at org.jboss.resource.connectionmanager.TxConnectionManager$TxConnectionEventListener.enlist(TxConnectionManager.java:455)
at org.jboss.resource.connectionmanager.TxConnectionManager.managedConnectionReconnected(TxConnectionManager.java:343)
at org.jboss.resource.connectionmanager.BaseConnectionManager2.allocateConnection(BaseConnectionManager2.java:483)
at org.jboss.resource.connectionmanager.BaseConnectionManager2$ConnectionManagerProxy.allocateConnection(BaseConnectionManager2.java:814)
at org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:102)


Is this because that my UserTransaction is not used correctly? Thanks

jason