why is the following setting commented? <!-- | <property name="hibernate.transaction.factory_class">org.hibernate.transaction.JTATransactionFactory</property> | --> You should not have to change the default connection release mode because your chosen TransactionFactory class already specifies the most appropriate mode. Flushing before completion and auto-closing the session are not recommended because jBPM flushes and closes the session for you. Hope this helps. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4009755#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...