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| Sharing Q-Mgrs or isolated Q-Mgrs? |
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| kme_1998 |
 Posted: Mon Aug 26, 2002 3:14 am Post subject: Sharing Q-Mgrs or isolated Q-Mgrs? |
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Novice
Joined: 04 Jun 2001
Posts: 14
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From the vast experience out there please speak up. What is generally considered best practice for running Q-mgrs in MVS. Large company with multiple business units. What are peoples opinions regarding simplicity of admin vs. advantage of isolation? Should every unit get their own or all share a couple Q_MGRS. Most of the data exists in shared LPAR environment.
This is a difficult question with many assumptions but would love to hear opinions on both sides. |
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| oz1ccg |
| Posted: Tue Aug 27, 2002 4:01 am Post subject: |
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Yatiri
Joined: 10 Feb 2002
Posts: 628
Location: Denmark
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Well,
That's a tuff question  Anyhow when dealing with MVS, there are no reason for having a QMGR per project/business unit.
There are strong security, high availablity, enought capacity (there are a mousetrap with max. msg length and number channels..) it's less overhead, and there are a limited number of subsystems available.
If you meet performace problems it can be a reason for adding one or more qmgrs.... I haven't faced it yet.
It's the same as with DB2, do you give every business unit their own DB2 subsystem with datasharing ? NO, you don't. It's the same approach with MQSeries one MQ per LPAR for production and evt. one for testing purpose.
The main benefits here is simple administration (small number of MQs to tune), you can give the business units their own pagesets/CF-structures to cover their data. But shared logging etc.
The biggest problem is to expand pageset size, while running (keep always some extra defined in the QMGRs, so you in flight can move/add queues if space problems.
Some of my customers are doing it this way, one production QMGR per LPAR covering all their business units.
OperTune from BMC can add pagesets while running. 
What benefit can we get when giving each business unit their own QMGR ? The only one I can see is stopping it without borther the other business units..
Just my $0.02
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Regards, Jørgen
Home of BlockIP2, the last free MQ Security exit ver. 3.00
Cert. on WMQ, WBIMB, SWIFT. |
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