Is it possible for a stateless session bean to employ a JTA UserTransaction object?
Yes, but with restrictions. By definition, a stateless session bean has no state; hence, each method invocation must be independent. (The bean can be "swapped out" between method invocations.) Thus, a stateless session bean can obtain a UserTransaction object via the EJBContext using the getUserTransaction() method, but it must start and finish each transaction within the scope of a method invocation.