Thanx! After looking a bit on the trailblazer, it confirmed your story. But still... What am I doing wrong... The trailblazer: anonymous wrote : To deploy the entity beans in an application, you can just package their class files in a JAR file. The EJB 3.0 specification also requires a persistence.xml file in the META-INF directory of the JAR file. The persistence.xml file defines which database is used with those entity beans and specifies the default behavior of the EntityManager. In my deploy nothing happens. The server do not react to concept.jar being copied to the deploy folder. The jar has a META-INF folder and has a MANIFEST.FS and a persistence.xml there. But nothing... Ideas? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3958690#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...