anonymous wrote : Other strange thing that I discovered is that the /lib/pu.jar explicitly needs to be definded in the application.xml file else the persistence-unit won't be initialized. Other dependencies in this directory get found. Is this also a bug? No. If you just put your jar in the /lib directory, it doesn't get processed for deployment purposes. All deployables must be listed in application.xml. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4079758#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...