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MQSeries.net Forum Index » IBM MQ Java / JMS » Understanding Admin Queue for Pub/Sub

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sley
PostPosted: Mon Jun 03, 2002 9:23 am    Post subject: Understanding Admin Queue for Pub/Sub Reply with quote

Novice

Joined: 18 Dec 2001
Posts: 11
Hi.
I'm currently using IBM JMS Pub/Sub SupportPac (MA88) and would like to understand more about it. Currently, we set up a durable subscriber using the client id, subscription name & topic. I see that within the SYSTEM.JMS.ADMIN.QUEUE, an entry is inserted for the durable subscriber. However, all topics currently are published to the SYSTEM.JMS.D.SUBSCRIBER.QUEUE. When I look into the queue, I only see that there is one copy of the message posted to the topic.

My various durable subscribers are able to receive the messages from this queue that relate to their specific topic. However, I'm curious how the subscribers are able to do this. If all the subscribers are listening to the same queue, then how will two subscribers listening to the same topic be able to receive two copies of the message? What is the relationship between the SYSTEM.JSM.ADMIN.QUEUE and the SYSTEM.JMS.D.SUBSCRIBER.QUEUE?

thanks again for all your help.
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