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| Changing shareoptions on an active log |
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| belchman |
 Posted: Mon Jun 27, 2011 5:42 am Post subject: Changing shareoptions on an active log |
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Partisan
Joined: 31 Mar 2006
Posts: 386
Location: Ohio, USA
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I have searched all of the manuals and MP16 and cannot find a definitive answer so I am hoping one of you have done this and are ore certain than I am.
I am reasonably certain, but need to be dead certain, that if I issue the following command against a running queue manager the MQ MSTR task will not notice until the next time it is bounced.
This is production so I need more confidence than a gut feeling  Even though I will have change documentation in place, I want to have confidence when I ask for approval and management asks me of the risks.
"ALTER 'MQP.MQP1.LOGCOPY1.DS03.DATA' SHAREOPTIONS (2 3)"
Currently, the file is shareable and is logging
"MQP.MQP1.LOGCOPY1.DS03 HAS SHAREOPTIONS LESS THAN (2 3) - CFSTRUCTURE RECOVERY NOT POSSIBLE"
The QSG is built and ready, we just do not have any shared objects yet, so the error is not so troubling for me.
Part of me wants to issue the alter now and the change (from QMGR Task scope) will be put into effect the next IPL or qmgr bounce.
Part of me doubts my gut when it says "don't worry".
What do you folks think?
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Make three correct guesses consecutively and you will establish a reputation as an expert. ~ Laurence J. Peter |
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| cicsprog |
| Posted: Mon Jun 27, 2011 9:30 am Post subject: |
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Partisan
Joined: 27 Jan 2002
Posts: 347
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| You need to look at the DFP manuals for your answer - not the MQ ones. It always safer to do this type of change when no apps have a VSAM file open. |
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| belchman |
| Posted: Mon Jun 27, 2011 9:48 am Post subject: |
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Partisan
Joined: 31 Mar 2006
Posts: 386
Location: Ohio, USA
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Thx cicsprog...
I decided to err on the side of caution and run my "change shareoptions JCL" during the next maintenance window prior to IPL.
I will gander at your DFP manual as well jut to learn something new.
_________________
Make three correct guesses consecutively and you will establish a reputation as an expert. ~ Laurence J. Peter |
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| cicsprog |
| Posted: Mon Jun 27, 2011 10:00 am Post subject: |
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Partisan
Joined: 27 Jan 2002
Posts: 347
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| I meant DFS manuals. GOOGLE VSAM SHAREOPTIONS and you'll be able to get the IBM manuals |
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| bruce2359 |
| Posted: Mon Jun 27, 2011 10:57 am Post subject: Re: Changing shareoptions on an active log |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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| belchman wrote: |
Currently, the file is shareable and is logging |
Not sure what this means... what file? Do you mean dataset?
| belchman wrote: |
"MQP.MQP1.LOGCOPY1.DS03 HAS SHAREOPTIONS LESS THAN (2 3) - CFSTRUCTURE RECOVERY NOT POSSIBLE" |
Is this an error message of some kind? What are you quoting? Where is the CSQnnnn message number?
What are the current SHR options?
And, why do you want to change SHR option?
_________________
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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| belchman |
| Posted: Mon Jun 27, 2011 11:04 am Post subject: |
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Partisan
Joined: 31 Mar 2006
Posts: 386
Location: Ohio, USA
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They are log datasets for the queue managers. They are now in the newly created queue sharing group and the logs need to be shareable.
The warning being thrown on one of the two queue managers is
CSQJ250I (MQP1 CSQJDS02 DATA SET 678
MQP.MQP1.LOGCOPY1.DS03 HAS SHAREOPTIONS LESS THAN (2 3) - CF
STRUCTURE RECOVERY NOT POSSIBLE
This weekend, I will alter the datasets, setting them to SHAREOPTIONS (2 3)
We can argue over semantics, but IMHO, a dataset is a file is a dataset. But these are datasets
_________________
Make three correct guesses consecutively and you will establish a reputation as an expert. ~ Laurence J. Peter |
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| bruce2359 |
| Posted: Mon Jun 27, 2011 11:39 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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This is pretty explicit about what you need to do to allow CF structure rebuild: http://publib.boulder.ibm.com/infocenter/wmqv7/v7r0/index.jsp?topic=/com.ibm.mq.csqsao.doc/zm14880_.htm
System programmer response
If you want CF structure recovery, use the Access Method Services ALTER function to correct the SHAREOPTIONS for the data set; for example
ALTER dsname.DATA SHAREOPTIONS(2 3)
Then restart the queue manager that owns the data set.
I'd leave things as they are for now; and make the change at next qmgr restart.
_________________
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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