I've not seen it done like that (same interface for both local/remote) ... try making your DAO layer local only. I'm not sure how you have things setup if you will get a local or remote interface injected. I think if it's the remote interface your entities will be serialized and thus detached. I've things setup like: @Remote | public interface AddressManagerRemote extends AddressManagerInterface { | } | ... | @Local | public interface AddressManagerLocal extends AddressManagerInterface { | } | ... | @Stateless | @Remote(AddressManager.class) | @Local(AddressManagerLocal.class) | public class AddressManagerBean implements AddressManagerRemote { | } | Then I can choose to use the local interface if required (in my SLSB's etc). View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4136372#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...