Please provide this information for both your machine and the server: 1) Operating system 2) JDK version 3) JBossAS version 4) Where is the JDK installed 5) Where is JBossAS installed How are you running and packaging your application? Is it an EAR or a WAR? Exploded directory or archive file? On your machine are you running from within an IDE? Can you post the contents of the EAR or WAR. Use "jar -ft xxx" where xxx is the name of the ear or war. Also if, you have an ear, post the contents of the application.xml file. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4155492#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...