Andy Yeung [http://community.jboss.org/people/andy.yeung] created the discussion "Re: Dispose of knowledgeSession when use with persistence" To view the discussion, visit: http://community.jboss.org/message/635634#635634 -------------------------------------------------------------- I did the following to make this issue gone. I am not quite certain that if every steps needed to be done or not. 1. I added a CountDownLatch in BlockingCommandBasedWSHumanTaskHandler and let my main thread to wait for it. In the GetCompletedTaskResponseHandler and GetResultContentResponseHandler handler I execute countDown based on the result to release the lock to ensure the response handler completed before I dispose the session in main thread. 2. I move the transaction scope to wrap my whole complete task logic. 3. I also find that it was triggering multiple callback to TaskCompletedHandler due to some reason. I partially fix that part. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/635634#635634] Start a new discussion in jBPM at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]