Thanks for quick reply . I want to know Message based chat application we are going to develop. that time how it will help for me. assume that . I have DB in list of user. whenever the user login , the same name I want to create Topic JNDI for that user. and provide publish the message and recive the message. When ever the user log out The Topic JNDI will delete automatically . This kind of scenario possible for JBOSS. please provide some more information about my question. Thanks and Regards P.Sasikumar Ellaar,chennai View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4129678#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...