I've also tried deploying the EAR with the RAR inside it and shared libs in the root of the EAR. I deployed that first and then deployed the -ds.xml seperately with the ear# syntax. I got a class not found exception: java.lang.ClassNotFoundException: No ClassLoaders found for: uk.co.thebadgerset.index.ra.ManagedConnectionFactoryImpl Presumably because the .ear is being deployed in an isolated class loader? I'll try deploying it with that way with the flat class loader and see what happens... (won't be able to run it though, as in the original post i said that i'm using the isolated class loader because of JAXB library conflicts). View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3963029#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...