Hello Juergen Zimmermann, If you are running two instances of the AS on the same machine or configured non-default ports see http://jira.jboss.com/jira/browse/JBAS-3309 If this is not the case, in the jmx-console, see the list of the JNDI viewable items and make sure your bean is visible: http://localhost:8080/jmx-console/HtmlAdaptor?action=inspectMBean&nam... Are there any exceptions displayed in the console, like "incompatible versions" or some thing else? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3988982#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...