warning !!! just lost a lot of time with the following. When you want to do bean managed transactions, do NOT use a seam managed persistent context (injected with @In) but use a EJB3 container managed persistent context (injected with @PersistenceContext). BMT how to summary mark bean as BMT @TransactionManagement(TransactionManagementType.BEAN) inject em @PersistenceContext // NOT !!! @In private EntityManager entityManager; inject user transaction @Resource private UserTransaction userTransaction; start / commit / rollback transaction on userTransaction object userTransaction.begin(); // etc View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4090194#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...