Hi all, as we know, the below jboss-service.xml description can define a timerservice mbean to generate the heartbeat, and the mbean which implements the notification listener interface can handle the heartbeat message. jboss.monitor.heartbeat JBoss is alive! 60sec <depends optional-attribute-name="TimerMBean"> jboss.monitor:name=Heartbeat,type=Timer My question is how to do it using ejb3 annotations instead of the xml? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4194644#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...