Why are you declaring the Datasource into application.xml ? It should be in jboss-app.xml : for example: <jboss-app> | | <module> | <service>myapp-ds.xml</service> | </module> | | </jboss-app> Place this jboss-app.xml in the META-INF folder of your EAR. And place the -ds.xml at the root of the EAR. hope it helps Francesco View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4250149#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...