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| csdenis |
 Posted: Wed Apr 21, 2004 7:52 pm Post subject: A dummy question |
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Novice
Joined: 06 Oct 2002
Posts: 24
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Sorry but I am new in MQ clustering. If 2 QueueManagers are in the same cluster, when I try to put message to another queue manager's local queue (which is already shared), do I need to specify the name of the remote queue manager? I am using Java.
openOptions = MQC.MQOO_OUTPUT;
outQ =
qMgr.accessQueue(
"SOME_QUEUE",
openOptions,
"", <-- Do I need to specifiy this queue manager variable?
"",
""); |
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| Michael Dag |
| Posted: Wed Apr 21, 2004 11:24 pm Post subject: |
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Jedi Knight
Joined: 13 Jun 2002
Posts: 2607
Location: The Netherlands (Amsterdam)
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you need to open the queue as if it was a local queue.
no need to specify the remote queuemanager, just the
one you are connecting to.
_________________
Michael
MQSystems Facebook page |
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| csdenis |
| Posted: Thu Apr 22, 2004 12:29 am Post subject: |
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Novice
Joined: 06 Oct 2002
Posts: 24
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| MichaelDag wrote: |
you need to open the queue as if it was a local queue.
no need to specify the remote queuemanager, just the
one you are connecting to. |
Thanks for your help! |
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| jefflowrey |
| Posted: Thu Apr 22, 2004 3:00 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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Since you are so new to clustering, let me remind you of something very basic.
You can not issue GETs against cluster queues. You can only issue a GET against a LOCAL queue (whether or not it's shared in the cluster).
So if you have QueueA on QueueManagerB, and your application is connected to QueueManager A, you can only PUT to QueueA.
_________________
I am *not* the model of the modern major general. |
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| PeterPotkay |
| Posted: Thu Apr 22, 2004 4:18 am Post subject: |
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Poobah
Joined: 15 May 2001
Posts: 7723
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| Quote: |
openOptions = MQC.MQOO_OUTPUT;
outQ =
qMgr.accessQueue(
"SOME_QUEUE",
openOptions,
"", <-- Do I need to specifiy this queue manager variable?
"",
"");
|
You don't need to if there is only one queue in the cluster, since the message can only go there.
You don't need to if there are multiple queues by that name in the cluster, since your message will round robin among them all, assuming the queue is OPENed with BIND_NOT_FIXED. But if one of the queues is actually defined locally, ALL your messages will go to the local instance.
You CAN specify the queue manager variable if you want to route the messages to a particular instance of the queue on a specific queue manager in the cluster. This is often necessary when you are doing request/replies in a cluster. The request can go to any queue on any queue manager usually, but the reply needs to go back specifically to the queue manager that sent the request.
_________________
Peter Potkay
Keep Calm and MQ On |
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