I would help if you told us under what conditions you are getting this error. And if you supplied a complete stack trace, if there is one. I am guessing that this is being caused by a JNDI lookup. If that is the case, post the code you are using to do the lookup, and the JNDI tree contents (use jmx console, the JNDIView mbean, the listall operation). View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4158151#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...