Okay in that case, probably you can place the persistence.xml in the META-INF folder of any one of the ejb jars. Let's assume you placed it in msp1_ejb.jar. The persistence.xml can then contain this: <?xml version="1.0" encoding="UTF-8"?> | <persistence xmlns="http://java.sun.com/xml/ns/persistence"> | <persistence-unit name="msp-par"> | <jta-data-source>java:/@deployeddatabase@</jta-data-source> | <jar-file>../</jar-file> | <jar-file>../../msp2_ejb.jar</jar-file> | <properties> | <property name="hibernate.hbm2ddl.auto" value="false"/> | <property name="com.intellij.javaee.persistence.datasource" value="Datasource"/> | </properties> | </persistence-unit> | </persistence> This way both the ejb jar files will be scanned for the entities. I tried this scenario on my local setup of JBoss-4.2.2 and this seems to be working. It picked up the entities that were spread across (and not replicated) the 2 ejb jars. Try it out and see if it works for you. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4139384#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...