Hi people. I indeed faced the same problem--> http://www.nabble.com/Sharing-persistence-unit-among-several-ejb-jars-in-a-collapsed-EAR-to17628307.html I had a main project containing my application, and a dependent project containing entities that were to be managed by a persistence unit declared in the main project. Using the JUnit test Eclipse facilities led me to your problem, namely the persistence unit is deployed only for the main project, not for the depending project. But my application worked fine when I packaged it as a war and dropped it to a openEJB enabled Tomcat. This got rid of the classpath problem David points at.
I suggest you try the same just to ensure that everything else works correctly. Anyway, David I'm looking forward to test your new OpenEJB build ! Regards, Juan Manuel -- View this message in context: http://www.nabble.com/Eclipse-Multiple-Projects-and-Missing-persistence.xml-tp16391627p17793566.html Sent from the OpenEJB User mailing list archive at Nabble.com.