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Determine what library member is in, and pass it as variable


IBM Mainframe Forums -> JCL & VSAM
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mdwait

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Joined: 23 Jul 2020
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PostPosted: Thu Jul 23, 2020 3:02 am
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We have to use unique PDS(s) to execute JCL.
What I want to do is:
Determine what "PDS" that the JCL is being executed from and then
pass that to a program.

I know how to pass a parameter to the program; just don't know how to determine what unique PDS the JCL is being executed from
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Nic Clouston

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PostPosted: Thu Jul 23, 2020 1:14 pm
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If the program that the parameter is being passed to is in the same jobstream then you cannot do it as the jobstream is fixed once it is submitted. However, if you can determine the source PDS of your JCL then that could be written to a dataset which could be read by that program.
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prino
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PostPosted: Thu Jul 23, 2020 9:07 pm
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Another insane "requirement" by a PHB?

There is no way for a job to find out from which PDS it has been submitted, unless the job starts with a program that reads SMF records.
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Robert Sample

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PostPosted: Thu Jul 23, 2020 9:24 pm
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There is a relationship between the load library the program executes from that can (usually) be identified, but as far as the JCL source -- there is nothing I know of in the system that will tie JCL source to an executing program. The same JCL can be executed from multiple PDS and there's nothing to indicate which was used. And when debugging started task issues, system programmers will slap a job card on the PROC, save it in their PDS and submit it as a normal job to get additional information; this tells you that there is no way to tie a JCL stream to a particular PDS.
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Rohit Umarjikar

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PostPosted: Thu Jul 23, 2020 11:01 pm
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Write a Rexx or Google it . That will give you the PDS and pass that as input to your program.
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Nic Clouston

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PostPosted: Fri Jul 24, 2020 2:21 pm
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I'm not sure how you Google and get the results in a running batch program.
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Rohit Umarjikar

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PostPosted: Fri Jul 24, 2020 10:26 pm
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Obliviously, if Rexx is unknown then Search on Google "How to do thru Rexx to get the PDS your are in?" is what I meant to make it more clear.
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PeterHolland

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PostPosted: Sat Jul 25, 2020 2:22 pm
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As far as i remember one could find the jcllibrary from which jcl was extracted in the job log.
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steve-myers

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PostPosted: Sat Jul 25, 2020 5:36 pm
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PeterHolland wrote:
As far as i remember one could find the jcllibrary from which jcl was extracted in the job log.
That's the library from which a cataloged procedure is obtained. I think the topic starter wants information about where the job came from. In other words, if a job is submitted using JCL like this -
Code:
//        EXEC PGM=IEBGENER
//SYSPRINT DD  SYSOUT=*
//SYSIN    DD  DUMMY
//SYSUT1   DD  ...,DSN=library(member)
//SYSUT2   DD  SYSOUT=(A,INTRDR)
the topic starter wants library and member.
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PeterHolland

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PostPosted: Sun Jul 26, 2020 2:58 pm
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Quote:
That's the library from which a cataloged procedure is obtained


True, where I worked all production JCL was submitted from cataloged procedure libraries. All JCL submission from "own" libraries was not allowed, except on test systems.
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