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Message
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| lavanbpt |
 Posted: Sun May 03, 2020 11:40 am Post subject: MQ on z/os - Change STGCLASS |
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Newbie
Joined: 30 Apr 2020
Posts: 6
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Hi All,
I am trying to change my STGCLASS object on z/OS to point to a different PSID. But I keep hitting the error, that its in use.
As per the IBM link (unable to post it here as I am new ! )
You can change a storage class only when:
All queues that use this storage class are empty, and have no uncommitted activity.
All queues that use this storage class are closed.
i have made sure that both above hold good.
But I still cannot do this. Still get the error that STGCLASS is in use.
Any thoughts please? |
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| bruce2359 |
| Posted: Sun May 03, 2020 2:30 pm Post subject: Re: MQ on z/os - Change STGCLASS |
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Poobah
Joined: 05 Jan 2008
Posts: 9486
Location: US: west coast, almost. Otherwise, enroute.
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| lavanbpt wrote: |
Hi All,
I am trying to change my STGCLASS object on z/OS to point to a different PSID. But I keep hitting the error, that its in use.
As per the IBM link (unable to post it here as I am new ! )
You can change a storage class only when:
All queues that use this storage class are empty, and have no uncommitted activity.
All queues that use this storage class are closed.
i have made sure that both above hold good.
But I still cannot do this. Still get the error that STGCLASS is in use.
Any thoughts please? |
Exactly how did you make sure that
- queues are empty
- have no uncommitted activity
- queues that use this storage class are closed
_________________
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| bruce2359 |
| Posted: Sun May 03, 2020 4:56 pm Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9486
Location: US: west coast, almost. Otherwise, enroute.
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Moved to mainframe forum.
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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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| hughson |
| Posted: Sun May 03, 2020 7:22 pm Post subject: |
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Padawan
Joined: 09 May 2013
Posts: 1967
Location: Bay of Plenty, New Zealand
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Issue the following command:-
| Code: |
| DISPLAY QLOCAL(*) WHERE(STGCLASS EQ your-stg-class) CURDEPTH IPPROCS OPPROCS |
and make sure that all CURDEPTH, IPPROCS and OPPROCS are zero.
Next, for each queue listed from the above command, issue this command:-
| Code: |
| DISPLAY QSTATUS(q-name) TYPE(HANDLE) |
and make sure every single one reports "NO QSTATUS FOUND".
Finally, for each queue listed from the first command, issue this command:-
| Code: |
| DISPLAY QSTATUS(q-name) TYPE(QUEUE) UNCOM |
and make sure UNCOM is NO.
Cheers,
Morag
_________________
Morag Hughson @MoragHughson
IBM MQ Technical Education Specialist
Get your IBM MQ training here!
MQGem Software |
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| lavanbpt |
| Posted: Mon May 04, 2020 6:12 am Post subject: |
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Newbie
Joined: 30 Apr 2020
Posts: 6
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| Thanks very much. That is exactly what I did. I have checked all this and can confirm all tick. So the STGCLASS should be free for change as per IBM links. |
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| bruce2359 |
| Posted: Mon May 04, 2020 6:34 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9486
Location: US: west coast, almost. Otherwise, enroute.
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Please post the entire error message. Which STGCLASS is in use?
What MQ version/release/modification?
_________________
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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| lavanbpt |
| Posted: Thu May 07, 2020 12:17 am Post subject: |
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Newbie
Joined: 30 Apr 2020
Posts: 6
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MQ is at v 9.1
The error as seen on z/OS host is:
CSQM101I qmgrname CSQMAPRO STGCLASS is currently in use |
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| bruce2359 |
| Posted: Thu May 07, 2020 3:31 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9486
Location: US: west coast, almost. Otherwise, enroute.
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Which STGCLASS?
_________________
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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| lavanbpt |
| Posted: Thu May 07, 2020 4:48 am Post subject: |
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Newbie
Joined: 30 Apr 2020
Posts: 6
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Its on an user defined STGLASS. not one of the defaults recommended (NODEFINE, DEFAULT, REMOTE etc.).
The affected STGCLASS has only one queue using it. |
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| bruce2359 |
| Posted: Thu May 07, 2020 5:11 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9486
Location: US: west coast, almost. Otherwise, enroute.
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Is the qmgr in a parallel sysplex? Is the queue a local queue? Or is it a shared queue? Does the stgclass map to a coupling facility structure?
_________________
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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| lavanbpt |
| Posted: Thu May 07, 2020 6:06 am Post subject: |
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Newbie
Joined: 30 Apr 2020
Posts: 6
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| Its a plain local queue. Not shared. And its empty with no PROCS attached. |
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| bruce2359 |
| Posted: Thu May 07, 2020 7:24 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9486
Location: US: west coast, almost. Otherwise, enroute.
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I've changed STGCLASS defs from time to time, and never had your issue. PMR time.
If I may ask, why are you changing STGCLASS? What problem/issue are you experiencing?
Way back in the real-DASD and limited central storage days (think dinosaurs, before SSD), we would change STGCLASS to refer to PSIDs on newer/faster DASD volumes to address performance issues.
_________________
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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| lavanbpt |
| Posted: Thu May 07, 2020 9:56 am Post subject: |
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Newbie
Joined: 30 Apr 2020
Posts: 6
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Its just that the old STGCLASS don't conform to the new org standards coming in with respect to the PSIDs they point to.
Agreed. I thought this would be straightforward too! |
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| bruce2359 |
| Posted: Thu May 07, 2020 1:13 pm Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9486
Location: US: west coast, almost. Otherwise, enroute.
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ah, the bane of organizational standards for their own sake.
_________________
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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| hughson |
| Posted: Thu May 07, 2020 1:16 pm Post subject: |
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Padawan
Joined: 09 May 2013
Posts: 1967
Location: Bay of Plenty, New Zealand
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| lavanbpt wrote: |
Its on an user defined STGLASS. not one of the defaults recommended (NODEFINE, DEFAULT, REMOTE etc.).
The affected STGCLASS has only one queue using it. |
Are you absolutely CERTAIN that it has only one queue using it? i.e. you have checked by issuing a command like:-
| Code: |
| DISPLAY QLOCAL(*) WHERE(STGCLASS EQ your-stg-class) CURDEPTH IPPROCS OPPROCS |
or do you just KNOW that it has only one queue using it, because that was how it was meant to be?
Cheers,
Morag
_________________
Morag Hughson @MoragHughson
IBM MQ Technical Education Specialist
Get your IBM MQ training here!
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