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JMS Interview Questions and Answers

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?