Message Acknowledgement

What is Message Acknowledgement?

Message acknowledgement is purely Listener (consumer) concept. It is a way to tell JMS provider that the message has been consumer or not. On the producer side, the only notion of acknowledgement consists of a successful invocation of either the topic publisher's publish method or the queue sender's send method.

How a message is acknowledged automatically? or What are different acknowledgement modes?

1. AUTO_ACKNOWLEDGE:

2. DUPS_OK_ACKNOWLEDGE:

3. CLIENT_ACKNOWLEDGE:

Reference:

• 1. http://www.novell.com/documentation/extend52/Docs/help/MP/jms/concepts/details.html