What do you mean by lock the session? Seam already serializes all access to session so you don't need to worry about concurrency. Is this what you mean? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4027242#4027242 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4027242