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Difficulty Level: AllBeginnerIntermediateExpert
Ques 1. How many messaging models do JMS provide for and what are they?
Ques 2. Why do the TopicSession.createDurableSubscriber and TopicSession.unubscribe calls raise JMSException with the message "ORA - 4020 - deadlock detected while trying to lock object"?
Ques 3. Why doesn’t the JMS API provide end-to-end synchronous message delivery and notification of delivery?
Ques 4. What are the core JMS-related objects required for each JMS-enabled application?