Now I'm totally confused... are you still getting "JTS5041: The resource manager is doing work outside a global transaction"?
CMT is easier because you don't need to check the tx status in your bean to decide if there is already a transaction in progress or you need to start one. Also, you don't need to have try - commit - catch - rollback code everywhere in your beans. So it's usually really the best choice.
Regards,
-marina
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