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rkarthik22 · Beginner Joined: 27 Sep 2008 Posts: 24 Topics: 9

Hi all,

Region Parameter issue is already discussed here...

http://www.mvsforums.com/helpboards/viewtopic.php?t=90

But Still i have soome doubts.

I am writing a easytrieve Program by comparing 2 input files and generating almost 75 Mismatch report files (75 Different fields mismatch reports).

While running this easytrieve program. in JCL, i am specifying all the 75 report files output files name in a single JCL with DCB. and so on...

I specified this parameter REGION=0M in JCL..and it was executed fine without any error.

Now this is the time where we are moving this code in to production, Where we are not allowed to code this REGION=0M.

If i Remove this REGION=0M in the JCL and test in the TEST region its giving S878 abend. '

So i am splitting this easytreive in to two programs..one writing 40 reports and other program writing 35 reports.

By doing this way we are going to move this code in to production..

I request you to help ,, is there any other alternative fo this?

Thanks for your help..

Regards,

Karthik

taltyman · Posted: Mon Sep 28, 2009 2:34 pm Post subject:

Try a non zero value, like 32M

Bill Dennis · Posted: Mon Sep 28, 2009 3:27 pm Post subject:

If you look at the IEF374I msg on a test run, add the numbers after the VIRT and SYS labels to get the REGION used. This will be the below the line REGION=xxxxK and can be coded on the JOB or STEP.

Hopefully, your site default for above the line REGION is sufficient. Try the new REGION in the test partition first.
_________________
Regards,
Bill Dennis

Disclaimer: My comments on this foorum are my own and do not represent the opinions or suggestions of any other person or business entity.

Terry_Heinze · Posted: Mon Sep 28, 2009 3:33 pm Post subject:

Also, find out what the default region size is for the job class this job will run in when in production.
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....Terry

Anuj Dhawan · Posted: Wed Sep 30, 2009 2:12 am Post subject: Re: Region Parameter

Anuj Dhawan · Posted: Wed Sep 30, 2009 2:23 am Post subject:

I am not very sure how to figure out how an operating system would distinguish between a program which intentionally uses a lot of storage, and a "runaway" program which unintentionally uses a lot of storage, without someone telling the operating system how much storage the program is intended to use.

In the former case it is just a waste of people time. In the latter case, all of the resources used by the job up until that point are -wasted- and as I've often said here and on other forums REGION related problems and job reruns are incredibly common in the wild. Arguably the current design drives up your hardware/software bill because you're wasting resources that could otherwise have been used productively.

/Rant on

If we accept that the computer's job is to run the work given to it by the user, obviously that is a knuckle headed concept.. Surely the system ought to be able to manage its own resources (including real and Auxiliary) and protect itself from ill-behaved programs, but that is something MVS has steadfastly refused to do for many years now. "Ohhhh..HH WELL" Just (change the REGION and) play it again Uncle Sam."

/Rant off
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Regards,
Anuj

rkarthik22 · Beginner Joined: 27 Sep 2008 Posts: 24 Topics: 9

Yes..

According to our Production standards, We are not Coding this REGION=0M in any of our jcl's.

Instead (To rectify this S878 abend) i am using this

Anuj Dhawan · Posted: Fri Oct 09, 2009 8:49 am Post subject:

I believe thread was for REGION parameter and not for SPACE parameter Surprised

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Regards,
Anuj

kolusu · Posted: Fri Oct 09, 2009 10:08 am Post subject: Re: Region Parameter

Terry_Heinze · Posted: Fri Oct 09, 2009 7:59 pm Post subject:

IEFBR14 · Posted: Sat Oct 10, 2009 8:07 am Post subject:

Anuj Dhawan · Posted: Sat Oct 10, 2009 3:07 pm Post subject: Re: Region Parameter

Anuj Dhawan · Posted: Sat Oct 10, 2009 3:31 pm Post subject:

Hi Terry,

Nic Clouston · Posted: Sun Oct 11, 2009 8:32 am Post subject:

what to mind?

Mind in this case means 'Could you'
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Utility and Program control cards are NOT, repeat NOT, JCL.

Bill Dennis · Posted: Mon Oct 12, 2009 8:32 am Post subject:

Our shop had a third-party product that would do a GETMAIN for all available storage below the line for work tables. With REGION=0M, nothing was left for system control block creation to OPEN files, etc. We had to find an appropriate REGION that left enough storage unallocated.
_________________
Regards,
Bill Dennis

Disclaimer: My comments on this foorum are my own and do not represent the opinions or suggestions of any other person or business entity.