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What is the effect of using Persistant messages?

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Ans: Persistent messages are usually logged. Logging messages reduces the performance of your application, so use persistent messages for essential data only. If the data in a message can be discarded if the queue manager stops or fails, use a nonpersistent message.
WebSphere MQ messages:
Messages are made up of Two parts: Message descriptor, Application data
Types of messages
Datagram: A Message sent with no response expected.
Request: A Message sent for which a response is expected.
Reply: A Response Message for a requested message.
Report: A Message that describes the occurrence or event
Ex COA/COD
Sizes ?
Qmanagerà10000 Msgs Maxmsglengthà4 Mb
Queueà5000 Msgs Maxmsglengthà4 Mb

 
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