2002-09-18 11:39:24,652 WARN [org.jboss.resource.connectionmanager.LocalTxConnectionManager$LocalConnectionEventListener] prepare called on a local tx. You are not getting the semantics you expect!
I suggest you ask David in the connector jca forum.
I think it means you have 2 one-phase connections in the same transaction so you can properly rollback when an error occures.