Hi Jaikiran, Thanks for your reply. Sorry to bother you by posting same issue at multiple places. I have already gone through this link twice, but my problem still remains same. The configuration specified on the link describes how to set the maxsize of instance pool and timeout time. But my question is: My problem is to configure the Stateless Session bean Instance Pool on JBoss start up. We need a pool of instance pool (“x” number of stateless session bean) On the startup of the server the instance pool of session bean does not have any instance of bean. The instances are instantiated only when request is made i.e. lazy loading. Please do let me know how I can configure the same. Thanks, Puneet View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4139331#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...