Thanks for quick reply... Actually my requirement is, When any user logs in, i have to set a flag like LoggedIn to true, And when the user logs out or on session invalidation, I have to set back that flag to false. This is to avoid the user to create 2 sessions at the same time... For Session invalidation case, we are supposed to implement HttpSessionListener, and we have update that flag to false... Can you suggest me the detailed solution for this... Thank you... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3987053#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...