Looks like you made some incorrect changes to the -ds.xml file which is resulting in this. Can you post the contents of this file? P.S: JBoss-5 CR2 is the latest JBoss-5 version that's available. Beta4 has now become old :-) So you probably would want to use the CR2 While posting the logs or code or xml content, remember to wrap it in a code block using the Code button in the message editor window and please hit the Preview button to make sure your post is correctly formatted View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4185944#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...