User development, A new message was posted in the thread "Entity Manager with BMT and Transaction Timeout": http://community.jboss.org/message/528562#528562 Author : Alexander Hartner Profile : http://community.jboss.org/people/ejb3workshop Message: -------------------------------------------------------------- Thanks for responsing. Here is my bean code.   First the MDB which shows the injection of an entityManager, usertransaction and a datasource:   Then further down the stack we begin a new userTransaction and load some entity via the entity manager     However further down the stack we access a collection on the account which loads further linked entities and failes with the LazyInitializationException.   This problem only occurs under load and is most likely caused by a slow down while accessing the database. However I am not too concerned about performance at this stage, just want to know how I can debug this issue and see what happened to my entity manager session. My suspicion is that since I am using a User Transaction that the global timeout which I set to 3600 (=1 hour) is not applied. If this is the case where do you set the default transaction timeout for a user transaction or the hibernate session. Usually the first time the exception is thrown is between 20 and 30 minutes after submitting a large volume of work. -------------------------------------------------------------- To reply to this message visit the message page: http://community.jboss.org/message/528562#528562