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| bay hoe san |
 Posted: Sat May 12, 2007 8:19 am Post subject: System Cluster Queues |
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Centurion
Joined: 27 Nov 2006
Posts: 117
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Hello,
( 1) May I know what's the usage of the following queues in cluster qmgrs:
1. SYSTEM.CLUSTER.COMMAND.QUEUE
2. SYSTEM.CLUSTER.REPOSITORY.QUEUE
3. SYSTEM.CLUSTER.TRANSMIT.QUEUE
( 2) What is the cause if the queue depth of the above queues are > 0? Is it ok? Any rectification?
Is there any more system cluster queues which I have missed out?
( 3) Pls advise. Thank you.
.Hoe San. |
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| marcin.kasinski |
| Posted: Sat May 12, 2007 8:55 am Post subject: Re: System Cluster Queues |
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Sentinel
Joined: 21 Dec 2004
Posts: 850
Location: Poland / Warsaw
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| bay hoe san |
| Posted: Sun May 13, 2007 2:34 am Post subject: |
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Centurion
Joined: 27 Nov 2006
Posts: 117
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Hello,
( 1) Thanks for your URL.
( 2) What is the cause if the queue depth of the above queues are > 0? Is it ok or it signifies problem? Any rectification?
( 3) I recently read about something called "subscriptions" on cluster qmgrs. Any expert wana share/explain?
Thanks.
.Hoe San. |
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| marcin.kasinski |
| Posted: Sun May 13, 2007 2:44 am Post subject: |
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Sentinel
Joined: 21 Dec 2004
Posts: 850
Location: Poland / Warsaw
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| bay hoe san wrote: |
Hello,
( 2) What is the cause if the queue depth of the above queues are > 0? Is it ok or it signifies problem? Any rectification?
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From URL above:
| Quote: |
| These queues typically contain large numbers of messages. |
| bay hoe san wrote: |
Hello,
( 3) I recently read about something called "subscriptions" on cluster qmgrs. Any expert wana share/explain?
Thanks.
.Hoe San. |
Are you talking about pub/sub subscriptions ?
Can you give us any context.
_________________
Marcin |
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| Nigelg |
| Posted: Mon May 14, 2007 12:03 am Post subject: |
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Grand Master
Joined: 02 Aug 2004
Posts: 1046
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Qmgrs which are part of a cluster use the pub/sub paradigm to exchange cluster metadata between the full and repos qmgrs.
Partial repos qmgrs publish data about the qmgr and the cluster queues to the full repos qmgrs, and subscribe to data about other qmgrs and queues in the cluster.
Full repos qmgrs publish data about qmgrs and queues to the subscribers, i.e. the other qmgrs in the cluster.
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MQSeries.net helps those who help themselves.. |
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| bay hoe san |
| Posted: Mon May 14, 2007 1:16 am Post subject: |
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Centurion
Joined: 27 Nov 2006
Posts: 117
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Hello,
( 1) If I can recall correctly, the word "subscription" came when I was searching for system.cluster.command.queue and I saw an article mentioning "problem in the repository subscription code leading to these errors". I guessed is some terminlogy use by IBM for clustering concepts.
( 2) Any clue on what's "subscription"?
Thanks.
.Hoe San. |
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| fjb_saper |
| Posted: Mon May 14, 2007 12:31 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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See Nigel's explanation above... 
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MQ & Broker admin |
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