By the way, in case it helps, here is the Hibernate code that does the same thing: SessionFactory factory = new AnnotationConfiguration().configure().buildSessionFactory(); | TransactionManager txManager = DummyTransactionManager.getInstance(); | txManager.begin(); | Session session = factory.getCurrentSession(); | session.createQuery("update C c set c.id = 1").executeUpdate(); | txManager.commit(); // kaboom!! View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4027692#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...