similar issue for me and same exception. the difference for me is that i don't have a class-wide transaction attribute set. just one method calling another. caller does not support transactions and the called method requires a new transaction. my methods: | @TransactionAttribute(TransactionAttributeType.NOT_SUPPORTED) | public void persistInt(SimpleInt myInt) { | persistIntImplementation(getUser(), myInt); | } | | | @TransactionAttribute(TransactionAttributeType.REQUIRES_NEW) | private void persistIntImplementation(User user, SimpleInt myInt) { | myInt.setValue(myInt.getValue() + 1); | em.persist(myInt); | } | View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4220380#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...