JBoss AS 4.0.5.GA, MySQL, nothing unusual about config, Windows XP Examples I have seen suggest that if you modify or create CMP entitybeans inside a session bean method then at the exit of that method these changes will be saved to the DB (flushed without calling em.merge or em.persist). I am not seeing this behavior. I have an app that I did several iterations of the above and the data is never saved. Calling em.flush() doesn't work either. If I call em.merge() it works? The merge call works but as documentation suggests that is inefficient. What's the deal? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4116591#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...