What does your setRollbackOnly() method do? Also, what does your begin() and commit() methods do? Could I see their implementation? As long as these delegate to a Transaction or UserTransaction object, and these transactions are obtained from the *same* TransactionManager instance you have registered with the cache, all should work. Also, do you have a debug log for the cache? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4203526#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...