We cannot control who has a reference to a transaction as it is exposed to code outside of TS. If there is any code which has a reference to the transaction impl, for whatever reason, then all instances referenced by that transaction cannot be garbaged collected. There is no reason for the transaction impl to keep a reference to the coordinator and associated objects once the transaction has completed. We should disassociate on completion. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4028056#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...