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JOBNAMES and JOBUMBER

 
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Arunkumar Chandrasekaran

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Joined: 01 Jun 2010
Posts: 61
Location: India

PostPosted: Thu Nov 29, 2012 5:51 pm    Post subject: JOBNAMES and JOBUMBER
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Hi ,
I have one doubt. Is there any possibility of same jobnumber is assigned to same job over a period of time??

My job is running every friday.Is there any possibility to get the same jobnumber which is assigned previously( last week ,last month,last year or any time)??

Please help.
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David Robinson

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Joined: 21 Dec 2011
Posts: 175
Location: UK

PostPosted: Thu Nov 29, 2012 6:06 pm    Post subject:
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Absolutely. Once a job with a given number has been purged from the spool, that number is available for re-use.

JES does not keep a record of which jobs have previously been allocated which numbers.
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Arunkumar Chandrasekaran

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Location: India

PostPosted: Thu Nov 29, 2012 6:11 pm    Post subject:
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Hi David Thanks for the reply.
Actually my jobs are stored in JHS(Job History System).Once it ran it will be moved to JHS.

Can I find same jobnumber for my job for more than once in JHS??
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David Robinson

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PostPosted: Thu Nov 29, 2012 6:23 pm    Post subject:
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I'm not familiar with JHS. I assume it's some type of job output / archiving / distribution / print utility such as CA's Dispatch.

In which case, JES sends it's output to JHS and that's it. JES does not consult JHS when allocating a new job number.

But, I'm making assumptions here as I've never heard of JHS.
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Robert Sample

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Joined: 06 Jun 2008
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Location: Bellevue, IA

PostPosted: Thu Nov 29, 2012 6:26 pm    Post subject:
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It is entirely possible. JES has an initialization parameter that tells it the highest job number it can assign. After it assigns that job number, the next assigned job number will be 1, then 2, then 3, etc. So depending upon your site configuration parameter, and how many jobs enter the system every day, it is entirely possible for the same number to wind up being used for the same job. It may not be very likely, but the probablility is definitely greater than zero.
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Akatsukami

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Joined: 03 Oct 2009
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Location: Bloomington, IL

PostPosted: Thu Nov 29, 2012 8:17 pm    Post subject:
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Note that if the job runs with a frequency such that JES number assignment is essentially random, then the number may be infrequently repeated. On our development sysplex, job numbers range from 1 to 99,999, and "wrap" every couple of days. A weekly job will probably have two runs with the same number every millennium or so.
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Arunkumar Chandrasekaran

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Joined: 01 Jun 2010
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Location: India

PostPosted: Thu Nov 29, 2012 8:44 pm    Post subject:
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Hi Thanks.

Can you please explain "wrap every couple of days" more??

Is it mean the jobnumbers reset to 00001 for every 2 days even it is not attained 99,999 ???
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Bill Woodger

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Joined: 09 Mar 2011
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PostPosted: Thu Nov 29, 2012 8:51 pm    Post subject: Reply to: JOBNAMES and JOBUMBER
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No, it means that Mr Akatsukami is very busy and they run 100,000 jobs in two days. If you search here for "baked" and "dog" you'll find one reason why....
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Akatsukami

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Joined: 03 Oct 2009
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Location: Bloomington, IL

PostPosted: Thu Nov 29, 2012 8:56 pm    Post subject:
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Hey, other people besides my team lead submit jobs! icon_biggrin.gif
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Akatsukami

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PostPosted: Thu Nov 29, 2012 9:16 pm    Post subject:
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FTR, the last wrap was about 16:26 CST yesterday (a job submitted then was assigned number 4). A job number at 09:00 CST today was assigned number 61507. Judge the activity in my shop from this, and keep in mind that this is only the primary development sysplex.
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