Tom Jenkinson [https://community.jboss.org/people/tomjenkinson] created the discussion "Re: EnityManager.close() before or after JTA afterCompletion()?" To view the discussion, visit: https://community.jboss.org/message/795988#795988 -------------------------------------------------------------- Hi Seyvet, If you look at those two stack traces you can see a common line: at com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.afterCompletion(TwoPhaseCoordinator.java:402) The only ordering that can be guaranteed is for interposed synchronizations (registered by the TransactionSynchronizationRegistry): http://docs.oracle.com/javaee/5/api/javax/transaction/TransactionSynchron... http://docs.oracle.com/javaee/5/api/javax/transaction/TransactionSynchron... There was a little mistype in my original response which I will now refactor in the original to say: ... foreach ResourceManager    rm::commit() foreach InterposedSynchronization    s::beforeCompletion(); foreach Synchronization    s::afterCompletion(); i.e. When it comes to afterCompletion, interposed synchronizations will be called *first* which is one way (if you only have two synchronizations ;) ) to guarentee order. -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/795988#795988] Start a new discussion in JBoss Transactions Development at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]