I have the same problem so a solution would be very nice. "raja05" wrote : | from the EJB Spec, | Quote: | | A persistence unit must have a name. Only one persistence unit of any given name may be defined within a single EJB-JAR file, within a single WAR file, within a single application client jar, or within an EAR (in the EAR root or lib directory). | But as understand it then JBoss 4.0.x will not support the new ear file layout - so does this work with the current version of JBoss? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3971208#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...