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| Heba_MQ |
 Posted: Tue May 24, 2022 9:50 am Post subject: qmgrs with same name but different versions |
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Apprentice
Joined: 19 Apr 2020
Posts: 39
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Dear All
is it possible to create qmgrs with same name on the same machine but with different mq installations
we have qmgr QM1 on aix machine installation1 with MQ version 7.5
the installation path is /usr/mqm and it is default installation
I installed version 9.2 on /opt/IBM/MQ and the installation path becomes /opt/IBM/MQ/usr/mqm and it took installation2
I used /opt/IBM/MQ/usr/mqm/bin/crtmqm QM2 - and it was associated with installation1 although IBM mentioned it should be associated with the installation issued the crtmqm command which is Installation2 ? any idea why ?
Also can I create qmgr with same name QM1 and associate it with Installation2 ?
Thanks
Heba |
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| gbaddeley |
| Posted: Tue May 24, 2022 3:48 pm Post subject: |
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Jedi Knight
Joined: 25 Mar 2003
Posts: 2538
Location: Melbourne, Australia
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| Quote: |
| is it possible to create qmgrs with same name on the same machine but with different mq installations |
I don't think /var/mqm/mqs.ini will allow duplicate queue manager stanza names, even if the InstallationName was different for each one.
To avoid any possible confusion, queue manager names should be unique across an entire network. 
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Glenn |
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| hughson |
| Posted: Wed May 25, 2022 12:29 am Post subject: |
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Padawan
Joined: 09 May 2013
Posts: 1959
Location: Bay of Plenty, New Zealand
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It is not possible. Remember that each queue manager has a directory in the MQ data directory under the qmgrs folder. There is only one data directory regardless of how many installations so there cannot be two folders with the same name.
The installation path is different from the data path. When you have multiple installations then there are different installation paths, but there is always only one data path.
In the error you mention with the crtmqm command, could you show us the full error message you saw so we can comment further?
Cheers,
Morag
_________________
Morag Hughson @MoragHughson
IBM MQ Technical Education Specialist
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| bruce2359 |
| Posted: Wed May 25, 2022 3:59 am Post subject: Re: qmgrs with same name but different versions |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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| Heba_MQ wrote: |
| is it possible to create qmgrs with same name on the same machine but with different mq installations |
Do you mean "in the same LPAR" or "in the same o/s instance? Machine is not a precise term.
You can have the same qmgr name in different LPARs, different o/s instances. Let confusion reign.
If memory serves, v5.3 introduced QMID the internally generated unique name of the queue manager - within this unique o/s instance, composed of qmgrname.datatimestamp.
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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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| fjb_saper |
| Posted: Wed May 25, 2022 11:32 am Post subject: Re: qmgrs with same name but different versions |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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| Heba_MQ wrote: |
Dear All
is it possible to create qmgrs with same name on the same machine but with different mq installations
we have qmgr QM1 on aix machine installation1 with MQ version 7.5
the installation path is /usr/mqm and it is default installation
I installed version 9.2 on /opt/IBM/MQ and the installation path becomes /opt/IBM/MQ/usr/mqm and it took installation2
I used /opt/IBM/MQ/usr/mqm/bin/crtmqm QM2 - and it was associated with installation1 although IBM mentioned it should be associated with the installation issued the crtmqm command which is Installation2 ? any idea why ?
Also can I create qmgr with same name QM1 and associate it with Installation2 ?
Thanks
Heba |
Before creating the qmgr in 9.2 did you source the environment using setmqenv ?? 
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MQ & Broker admin |
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| gbaddeley |
| Posted: Wed May 25, 2022 3:14 pm Post subject: |
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Jedi Knight
Joined: 25 Mar 2003
Posts: 2538
Location: Melbourne, Australia
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| hughson wrote: |
| It is not possible. Remember that each queue manager has a directory in the MQ data directory under the qmgrs folder. |
By default, yes. However each qmgr can have its own setting for Prefix and DataPath in mqs.ini. These allow each qmgr to have separate data, eg. on HA cluster disks. The recovery logs can also be on separate disks, as set in each qm.ini. Note that there is another technique for doing HA config, using the default directories, with symbolic links for each qmgr to the physical directory.
Something that may prevent duplicate qmgr names on the same server is the /var/mqm/sockets directory. This has sub directories for each qmgr name.
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Glenn |
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| PeterPotkay |
| Posted: Thu May 26, 2022 5:25 pm Post subject: |
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Poobah
Joined: 15 May 2001
Posts: 7722
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Heba_MQ,
What are you trying to accomplish? Maybe there is a better way.
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Peter Potkay
Keep Calm and MQ On |
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| Andyh |
| Posted: Fri May 27, 2022 3:59 am Post subject: |
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Master
Joined: 29 Jul 2010
Posts: 239
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| gbaddeley wrote: |
| Quote: |
| is it possible to create qmgrs with same name on the same machine but with different mq installations |
I don't think /var/mqm/mqs.ini will allow duplicate queue manager stanza names, even if the InstallationName was different for each one.
To avoid any possible confusion, queue manager names should be unique across an entire network. |
IBM documents the AMQ_MQS_INI_LOCATION as one of "A list of server and client environment variables intended for customer use", but there's minimal information on how this environment variable might be used. |
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| bruce2359 |
| Posted: Fri May 27, 2022 6:43 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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| gbaddeley wrote: |
| Something that may prevent duplicate qmgr names on the same server is the /var/mqm/sockets directory. This has sub directories for each qmgr name. |
In the interest of precision and clarity: "server" is imprecise. (And, "server" appears widely in IBM MQ doc.) The OP used the similarly imprecise term "machine".
I suspect the OP is asking if it's possible to have multiple qmgrs with the same name in one o/s instance.
_________________
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.
Last edited by bruce2359 on Fri May 27, 2022 8:25 am; edited 1 time in total |
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| Heba_MQ |
| Posted: Fri May 27, 2022 7:54 am Post subject: |
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Apprentice
Joined: 19 Apr 2020
Posts: 39
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Many Thanks for all replies -
The error that I got is that qmgr already exists
the people I am working with wanted to have two version of MQ 7.5 and 9.2 and have two qmgrs with the same name and keep one up at a time and test
(as they did not want to change the setting from the WebSphere using the MQ objects )...
but any idea why when I created the QM2 with the full path of the bin dir of installation2, it was also created with Installation1 ?
Many Thanks friends for your help
Heba |
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| hughson |
| Posted: Sun May 29, 2022 6:57 pm Post subject: |
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Padawan
Joined: 09 May 2013
Posts: 1959
Location: Bay of Plenty, New Zealand
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| Heba_MQ wrote: |
| The error that I got is that qmgr already exists |
Which is accurate 
| Heba_MQ wrote: |
the people I am working with wanted to have two version of MQ 7.5 and 9.2 and have two qmgrs with the same name and keep one up at a time and test
(as they did not want to change the setting from the WebSphere using the MQ objects )... |
Perhaps we can instead help you with the settings they are worried about so that you can use two differently named queue managers. Can you expand on what they needed to change and perhaps we can provide alternative ways of running that would allow easy switching.
| Heba_MQ wrote: |
| but any idea why when I created the QM2 with the full path of the bin dir of installation2, it was also created with Installation1 ? |
I assume your currently set MQ environment (setmqenv) was pointing at Installation1.
Cheers,
Morag
_________________
Morag Hughson @MoragHughson
IBM MQ Technical Education Specialist
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