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How to measure "Region" for a step in a job

 
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priyesh.agrawal

Senior Member


Joined: 28 Mar 2005
Posts: 1452
Location: Chicago, IL

PostPosted: Mon Apr 18, 2005 9:21 pm    Post subject: How to measure "Region" for a step in a job
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Hi All,

My Job is getting abended on a perticular step every time due to lack of region available (U0008). I want to add REGION parameter to overcome this prob from that perticular step.

Problem is how can I measure the region parm needs to provide there.

Thanks & Regards,

Priyesh.
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somasundaran_k

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Joined: 03 Jun 2003
Posts: 134

PostPosted: Fri Apr 29, 2005 7:05 pm    Post subject:
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Priyesh

I do not know how to measure the parm value. But by providing REGION=0M in the step will aquire all the available storage.Provided you are not overriding this in the JOB.

hth
-Som
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priyesh.agrawal

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Joined: 28 Mar 2005
Posts: 1452
Location: Chicago, IL

PostPosted: Fri Apr 29, 2005 8:07 pm    Post subject: Re: How to measure "Region" for a step in a job
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somasundaran_k,

Firstly Many many Thanks to put ur precious time for this.

Quote:
providing REGION=0M in the step will aquire all the available storage.


Won't it cause problem to the other jobs running simultaneously. Please correct If I went wrong.

Regards,

Priyesh
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superk

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Joined: 26 Apr 2004
Posts: 4650
Location: Raleigh, NC, USA

PostPosted: Fri Apr 29, 2005 8:08 pm    Post subject: Re: How to measure "Region" for a step in a job
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First, you may want to read the chapter "2.6.4 Resource Control of Address Space" in the MVS JCL User's Guide:

http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/IEA2B540/2.6.4?DT=20040712160458

It provides some details on using the REGION parameter for jobs or job steps.

In the real world, if I were experiencing problems with real storage, I would be in contact with my MVS Systems Programmers to determine what should be done. My gut feeling is that they would use a product such as Strobe to record the storage used by the executing program, and then use the analysis provided to recommend a reasonable value for your REGION size. If the program in question was provided by a vendor, I would be looking to them to make the recommendations for the REGION size.

Otherwise, if there is nothing preventing you from doing so, I would go with Som's recommendation and use REGION=0M.
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priyesh.agrawal

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Joined: 28 Mar 2005
Posts: 1452
Location: Chicago, IL

PostPosted: Fri Apr 29, 2005 8:26 pm    Post subject: Re: How to measure "Region" for a step in a job
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Thanks a lot Superk for your SUPER Komment atlast,

Quote:
I would be in contact with my MVS Systems Programmers to determine what should be done.


Think that is the only way, as putting REGION=0M is not feasable for me.

Regards,

Priyesh.
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