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MQSeries.net Forum Index » WebSphere Message Broker (ACE) Support » Weird behavior with Pub/Sub

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autorun
PostPosted: Fri Apr 26, 2002 3:05 pm    Post subject: Reply with quote

Apprentice

Joined: 02 Feb 2002
Posts: 29

Hi all,

The Pub/Sub used to work nicely, but I had an interesting experience as below. I registered a topic for two queues, then both of them appeared on Control Center. However, when a message was published as that topic, only one of the them received that message. I deregistered and registered that broken one, it worked again.

Any clue on it?

Thank you very much!!!
Autorun

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abiram8
PostPosted: Sun Apr 28, 2002 8:22 am    Post subject: Reply with quote

Master

Joined: 27 Mar 2002
Posts: 207
Location: India

Hi,
Do you mean by the Q in the Control center in Subscription Panel & rest of the messages is un clear please let me know since we are using multiple Q scenario


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autorun
PostPosted: Tue Apr 30, 2002 7:15 am    Post subject: Reply with quote

Apprentice

Joined: 02 Feb 2002
Posts: 29

Hi,

Here is what I found,

1. Register QueueA and QueueB for a topic /US/Stock/IBM;
2. Both subscription for QueueA and QueueB are shown on Control Center. In fact, it is also confirmed that the subscription is success based on the reply messages in my reply queue during subscription;
3. Send a message (MsgStock) to a publishing message flow for the topic /US/Stock/IBM;
4. PROBLEM is here: Only QueueA can receive the message MsgStock;
5. Deregister and register QueueB again;
6. Both QueueA and QueueB can receive message MsgStock now;

Best regards,
Autorun
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MillsPerry
PostPosted: Wed May 01, 2002 12:51 pm    Post subject: Reply with quote

Acolyte

Joined: 08 Oct 2001
Posts: 59
Location: ZyQuest, inc.

Just curious. Did you reboot the server between steps 5 and 6? I often experience chaotic behavior with pub/sub, and sometimes a reboot seems to clear it out.

... of course the five other systems using that server don't always appreciate the reboot.
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autorun
PostPosted: Wed May 01, 2002 1:15 pm    Post subject: Reply with quote

Apprentice

Joined: 02 Feb 2002
Posts: 29

Greetings,

No, I didn't reboot the system at all.

Best regards,
Autorun
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