Doubt in BMT

[kumar mahesh]

...
UserTransaction ut = validContext.getUserTransaction();
ut.begin();
......
ut.setRollbackOnly();
.......
ut.commit();


Is it correct to invoke the setRollBackOnly method in a BMT. What will happen when this method is invoked?

[Nikhil Jain]

This works. UserTransaction can invoke setRollbackOnly method. But this method should be of UserTransaction rather than EJBContext.

I tried this, javax.persistence.TransactionRequiredException: EntityManager must be access within a transaction & on the client it said
BMT stateful bean 'Process' did not complete user transaction properly status=STATUS_MARKED_ROLLBACK.

But why did it give such error on the server. Should'nt it have given a better exception like, EJBTransactionRolledbackException .Exception etc

[Nikhil Jain]

http://www.coderanch.com/t/157891/java-EJB-SCBCD/certification/When-UserTransaction-setRollbackOnly-UserTransaction-rollback

http://www.coderanch.com/t/162878/java-EJB-SCBCD/certification/rollback-vs-setRollbackOnly

[Nikhil Jain]

ejbContext.setRollbackOnly();

In CMT, this method causes TransactionRequiredException. But it should be transactionRolledBackexception. This error is generated when server tries to commit.

Any Idea?