Ok, my situation is the following. I've to execute a very large number of process instances but they're not started all in the same time. This number can be even 1 million per day! Some of this instances will live for a few minutes, since the answer they wait for arrives soon, while the others will wait days... So can I free the useless memory usage of this kind of processes (since they're doing no work at all) or not? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4072870#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...