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Query on IEFBR14 with GDG


IBM Mainframe Forums -> JCL & VSAM
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Ashishpanpaliya

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Joined: 13 Oct 2017
Posts: 34
Location: India

PostPosted: Tue Nov 07, 2017 8:34 pm
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Hi ,

I am doing some impact analysis and noticed below job step.

Just want to confirm if its just creating new empty GDG version or anything else ?

/
Code:
/YGSTP05  EXEC PGM=IEFBR14,                                                   
//             COND=(0,NE)                                                     
//DD01     DD  DSN=YG.G.PHR.PKDBLOAD.THORNE(+1),                               
//             DISP=(,CATLG),                                                   
//             SPACE=(TRK,(15,150)),                                           
//             DCB=(GDG.MODEL,DSORG=PS,RECFM=FB,BLKSIZE=0,LRECL=1000)
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enrico-sorichetti

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Joined: 14 Mar 2007
Posts: 10781
Location: italy

PostPosted: Tue Nov 07, 2017 8:38 pm
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Quote:
Occupation: Mainframe Designer
Mainframe Skills: COBOL, JCL, DB2

icon_question.gif
these questions make me wonder about the real skills of people
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Phrzby Phil

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Joined: 31 Oct 2006
Posts: 1016
Location: Richmond, Virginia

PostPosted: Wed Nov 08, 2017 10:18 am
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So what DID it do?

Also, lookup difference between generation and version. A search of the forum will find no less than, I estimate, one million clarifications.

Also, my personal preference (other experts may disagree) is to never use the DISP default. Others not as experts as the coder may not remember it, and a text search for NEW will miss it.
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steve-myers

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Joined: 30 Nov 2013
Posts: 886
Location: The Universe

PostPosted: Wed Nov 08, 2017 11:17 am
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DISP=(,CATLG)

You are correct, though I must admit this is one not so obvious default that I, personally, use all the time.

On the other hand, just last week I wrote -

//SYSLMOD DD UNIT=SYSDA,SPACE=(TRK,(1,1,1)),DSN=&&GOSET(GO)

(2 defaults for DISP)

This was quite deliberate; it was done for a small experimental function that ran the Binder and then ran the program using the member name in the DD statement. Though I rather doubt anyone would be interested and I have no intent of publishing the function, it ran fine.
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expat

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Joined: 14 Mar 2007
Posts: 8797
Location: Welsh Wales

PostPosted: Mon Dec 04, 2017 7:58 pm
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Dare I ask why you are still using the Model DSCB method (GDG.MODEL) even non SMS managed datasets can use DATACLAS attribute allocations.
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