anonymous wrote : Well, it could be, but not sure that this TreeMap could get too big. I have to check if somewhere else in the code I have similar maps. | Still, about my first question: if all SFSB are destroyed, when can serialization happen? Passivation applies only on inactive beans right? And how about garbage collection? Does it involve any calls to the jboss.serial library? | That I don't know... I hope Carlo would see this message.. Carlo? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4165177#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...