[com.arjuna.ats.internal.jta.transaction.arjunacore.lastResource.disallow] Adding multiple last resources is disallowed. Current resource is org.jboss.resource.connectionmanager.TxConnectionManager$LocalXAResource@1044bcb
2010-06-14 18:38:00,353 TRACE [org.jboss.resource.connectionmanager.TxConnectionManager] (WorkerThread#0[127.0.0.1:45941]) Failed to enlist resource
You might have multiple local-tx-datasource being used in a single JTA transaction, it is unsafe check this
http://community.jboss.org/wiki/Multiple1PC