The load balancer (Apache) is what handles failover. The request comes into apache and it decides how to handle it. If it sees the request's session is associated with a backend server that is no longer available, Apache picks a different server (i.e. fails over). If it passes the request through to a backend server and the request fails with a recoverable problem (e.g. ConnectException connecting to the backend server), it tries a different backend server (i.e. fails over). View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4210746#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...