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How does a called pgm know if its called from CICS or Batch


IBM Mainframe Forums -> COBOL Programming
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Graeme Westerman

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Joined: 29 Nov 2016
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PostPosted: Tue Nov 29, 2016 9:25 pm
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Hi, we have a Cobol developer who is trying to call a subroutine from both CICS and Batch. The subroutine obviously has to pass back data to the calling program. How does the called program know that the calling program is batch or CICS?

Thanks
Graeme
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Robert Sample

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Joined: 06 Jun 2008
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PostPosted: Tue Nov 29, 2016 9:44 pm
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Quote:
How does the called program know that the calling program is batch or CICS?
Why does it care? As long as the COBOL program isn't doing anything prohibited under CICS (such as reading a file) and has the DFHEIBLK and DFHCOMMAREA defined in the calling sequence, the same subprogram should run under CICS and batch without knowing -- or caring -- where it is running.
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Rohit Umarjikar

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PostPosted: Tue Nov 29, 2016 9:47 pm
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Welcome!!
Couple of replies from bottom should help you knowing that.
ibmmainframes.com/about27389.html
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Bill Woodger

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PostPosted: Tue Nov 29, 2016 11:26 pm
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Rohit,

Other than the other Bill's Assembler, what is there that is of use relating to the question? It is also eight years old.

Graeme Westerman,

As Robert asked, why does the program need to know? There are some very direct ways, but if the program doesn't need to know, why even bother with those?
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Rohit Umarjikar

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PostPosted: Tue Nov 29, 2016 11:47 pm
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The routine must check the received DFHEIBLK to detect if it is running under CICS or in Batch
Shouldn't this help?
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Ricardo Guerra

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Joined: 08 May 2015
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Location: Argentina

PostPosted: Thu Apr 06, 2017 12:56 am
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I work on that and the solution we use is to pass a parameter in the input data when you call the routine to distinguish from where is called.
Is a very simple solution and works.
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