Ah, it's the ClassLoaderDomainMBean that has | /** | * Find the classloader for a class | * | * @param name the class name | * @return the classloader or null if it is not loaded by a managed classloader | * @throws ClassNotFoundException when the class is not found | */ | ObjectName findClassLoaderForClass(String name) throws ClassNotFoundException; | Try this on DefaultDomain for RARDeployment class. If this one doesn't find it, try other domains if you can find it. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4267775#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...