This week's book giveaway is in the OCAJP forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide 1Z0-808 and have Jeanne Boyarsky & Scott Selikoff on-line! See this thread for details.
I am trying to understand the JMS acknowledgment modes and I have three basic questions.
1.Who requests for an acknowledgement is it the consumer or the producer? 2.What does it mean that the client session has been acknowledged? 3.In DUPS_OK_ACKNOWLEDGE Mode, why is it that a message may be redelivered to the client again?