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What is the maximum CPU execution time


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Robert Sample

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PostPosted: Thu Oct 18, 2012 5:17 pm
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What is "8 months and 25 days"? We IPLed our mainframe on September 23, 2012. The previous IPL was July 11, 2011. We therefore had started tasks that ran for 14 months and 12 days with no issues. If your trainer told you no job can run more than 8 months and 25 days, then your trainer is wrong and need to go back to school as well.
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kvelisetti
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PostPosted: Thu Oct 18, 2012 5:17 pm
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thank you.
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Akatsukami

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PostPosted: Thu Oct 18, 2012 5:20 pm
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kvelisetti wrote:
Thank you robert. but my trainer mentioned it as 8 months and 25 days.

Your trainer is badly confused...at least. I suggest that you smile and nod, ignore everything that heesh says, and seek more accurate sources of information.
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kvelisetti
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PostPosted: Thu Oct 18, 2012 5:25 pm
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icon_smile.gif thank you
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Bill Woodger

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PostPosted: Thu Oct 18, 2012 5:40 pm
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From the z/OS JCL Language Reference (an irony in the name, but there we are:

Quote:
minutes
Specifies the maximum number of minutes a job may use the processor. Minutes must be a number from 0 through 357912 (248.55 days).

Do not code TIME=0 on a JOB statement. The results are unpredictable.

seconds
Specifies the maximum number of seconds that a job may use the processor, in addition to any minutes that you specify. Seconds must be a number from 0 through 59.


Why somebody decided to "convert" CPU minutes into a number of "days" I have not the slightest idea. If those many minutes are specified, the job will not suddenly stop after "eight months and something days". Remember also. There is no "standard" length for a "month" even... so how some "exact" number of months and days could be meaningful even at that level, I don't know.
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dbzTHEdinosauer

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PostPosted: Thu Oct 18, 2012 6:49 pm
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as a footnote to this thread,
the TIME parameter is effectively ignored
by sites as they grow more sophisticated in their operations set-up.
thru use of CLASS JOB parameter,
the amount of time a job is run, is sorta 'set in stone'.
So, instead of wasting time coding a TIME JOB parm,
ask your operations group for the CLASS definitions documentation,
(which you did not bother to read during your orientation week).
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enrico-sorichetti

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PostPosted: Thu Oct 18, 2012 8:01 pm
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from the ts profile

Quote:
Occupation : associate software engineer


another IBM employee ? icon_cool.gif
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