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| Unusual (maybe) Queue Sharing Setup |
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| cicsprog |
 Posted: Thu Apr 10, 2025 11:15 am Post subject: Unusual (maybe) Queue Sharing Setup |
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Partisan
Joined: 27 Jan 2002
Posts: 347
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I have a customer that would like to make use of QSG. It's been over 12 years since I was involved in a QSG setup.
They want me to setup QSG with two mqms on the same LPAR. At a previous site I always had a multi LPAR setup with QSG. Obviously, they aren't really exploiting the real usefulness of a HA setup with QSG. But I'm doing what their asking.
1) I assume it's possible to setup QSG on a single LPAR with two mqms?
2) Would anything odd happen in this type of configuration?
Thanks for any tips. |
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| hughson |
| Posted: Tue Apr 15, 2025 10:51 pm Post subject: |
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Padawan
Joined: 09 May 2013
Posts: 1959
Location: Bay of Plenty, New Zealand
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The first question that comes to my mind is, where is the Coupling Facility in this set up? In addition to this single LPAR, you must have a CF right?
Cheers,
Morag
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Morag Hughson @MoragHughson
IBM MQ Technical Education Specialist
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| cicsprog |
| Posted: Wed Apr 16, 2025 7:51 am Post subject: |
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Partisan
Joined: 27 Jan 2002
Posts: 347
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I did ask IBM and they did say this is possible as far as creating QSG on a single LPAR.
Yes, there is a Coupling Facility. DB2 is making use of it.
At the moment I'm just following through the manual on how to configure all the pieces. Can you recommend a good naming convent for the QSG names? AS I mentioned they currently have
PRD1 as the Prod LPAR
TST2 as there QA Developemnt LPAR
QAL1 as their sandbox LPAR |
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| hughson |
| Posted: Thu Apr 17, 2025 2:18 am Post subject: |
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Padawan
Joined: 09 May 2013
Posts: 1959
Location: Bay of Plenty, New Zealand
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You already have a CF - good - where is it? Is it hardware or on another LPAR?
Anyway, if your question is "can I have two members of the same QSG running on the same LPAR?" then yes. Remember that you might want to have a VIPA for each, because they won't be able to bind to the same IP address for listening on when running on the same LPAR.
If your question is "can I create a QSG if I only have one LPAR?" then I'm not so sure. I don't know whether the CF can run in the same LPAR. However, if you already have a CF, then wherever it is, that question is already answered. And perhaps this second interpretation of your original question is not an accurate interpretation.
Wrt naming conventions for QSGNames - I've never seen anyone cover that. I would be inclined to take whatever 3-char prefix I imagine you might have for queue managers along with a number to give you queue manager names, and replace the number with a letter G perhaps for a group name. Just an idea though. I would recommend a 4-char QSG name even though you are allowed less. It's just a bit weird if you don't. I think there are @ symbols that go in place of the missing char or something like that, so use all four letters you have.
Cheers,
Morag
_________________
Morag Hughson @MoragHughson
IBM MQ Technical Education Specialist
Get your IBM MQ training here!
MQGem Software |
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| bruce2359 |
| Posted: Thu Apr 17, 2025 11:18 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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It's been a while, but:
Coupling Facility Control Code (CFCC) is licensed internal code (LIC). CFCC runs in a dedicated LPAR or in a Coupling Facility (CF) or both.
Multiple z/OS qmgrs in a single LPAR or across multiple LPARS can be part of a QSG.
For testing purposes many shops run new CFCC code in an LPAR before deploying it to a CF. Same when modifying and testing structure definitions.
For high-availability, big shops run duplicated CF's. To reduce cost a bit, a shop can run CFCC code in an LPAR instead of a 2nd CF.
What did I miss?
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I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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| cicsprog |
| Posted: Thu Apr 17, 2025 3:30 pm Post subject: |
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Partisan
Joined: 27 Jan 2002
Posts: 347
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| bruce2359 |
| Posted: Thu Apr 17, 2025 4:56 pm Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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yw at
_________________
I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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