I think you simply have the wrong MBean. There's ones for Tomcat: http://www.opennms.org/index.php/Tomcat_5.5_JMX_How-To View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4098921#4098921 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4098921