Thanks for your advice, ALRubinger. In my project, I put a session bean together with it's entity classes in one JAR file (.ejb3). So, 3 session beans means 3 .ejb3 files. I didn't throw my EJB3 files into an EAR , because i think it's not too important ;) CMIIW. I just deploy them into server directly, and it works. Any consequences of doing this? Best regards Bustanil View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3995255#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...