A MDB Question

[krithika desai]

Pretty basic. If i send a message to a MDB and an exception gets thrown while performing an operation, depending upon my trans-attribute setting, things will be rolled back or otherwise?.Now does the message that I sent get back to the message queue? and will it retry the whole thing again later @ some other point of time?
If it does is there any timeout and max tries setting?

[Pradeep bhatt]

If the message sending code is a part of a transaction and some error occurs which results in Tx rollbacvk, the message is not delivered.

[Pradeep bhatt]

http://java.sun.com/products/jms/tutorial/1_3_1-fcs/doc/jmsj2ee.html#1029338

[Ashish Sarin]

If 'Required' transaction attribute is specified for the onMessage(javax.jms.Message) method ONLY then the message will be redelivered to the MDB instance. In case of MDBs designed with BMT no message is re-delivered because message delivery is never a part of transaction in case of BMTs.
regards
ashish sarin

[krithika desai]

thanks ashish, pradeep,
that helps. I guess the app servers do allow us to configure the number of retries then?.

[Ashish Sarin]

I don't think so. It is probably handled by the Application Server behind the scenes.
regards
ashish sarin