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Merging multiple input files

 
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jayram99
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Joined: 16 Aug 2004
Posts: 52
Topics: 21
Location: falls church.va,usa
PostPosted: Mon May 09, 2016 12:41 pm    Post subject: Merging multiple input files Reply with quote
Please see the below details.
Code:

//JS20     EXEC PGM=SORT,REGION=0M,
//           PARM='CORE=MAX,DYNALLOC=(SYSDA,25)'
//*
//SORTIN   DD DSN=MIS.EXTRACT.ABCD2060.CZT,
//            DISP=(SHR,KEEP,KEEP)
//         DD DSN=MIS.EXTRACT.ABCD2062.LAU,
//            DISP=(SHR,KEEP,KEEP)
//         DD DSN=MIS.EXTRACT.ABCD2064.LBL,
//            DISP=(SHR,KEEP,KEEP)
//SORTOUT  DD DSN=MIS.EXTRACT.ROLLUP.ABCD3025,
//            DISP=(NEW,CATLG,DELETE),
//            LABEL=RETPD=0290,
//            DCB=(RECFM=VB,BLKSIZE=0,DSORG=PS),
//            UNIT=CART
//*
//SYSOUT   DD SYSOUT=*
//*
//SYSIN    DD DSN=&ENV.MIS.PARMLIB(CWD3025A),
//            DISP=(SHR,KEEP,KEEP)


I have a requirement to Merge 3 Input Files and sometimes I might not receive MIS.EXTRACT.ABCD2060.CZT File.
The job should sort/merge other 2 files (MIS.EXTRACT.ABCD2062.LAU and MIS.EXTRACT.ABCD2064.LBL).

How to execute job with only 2 input files. Please advice.

Thank you.
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William Collins
Supermod


Joined: 03 Jun 2012
Posts: 437
Topics: 0
PostPosted: Mon May 09, 2016 5:34 pm    Post subject: Reply with quote
Please look at your SORT manual to see what "merge" means in a SORT context. You are not merging, you are just SORTing multiple datasets together.

Presumably the "schedule" "knows" that the file is not present? Use a different JOB which is the same but does not have the missing dataset.

Dirtier way, just delete the dataset from the JCL when you know it isn't present.

Other simple things of the above type.

Out of interest, do you know the defaults for SHR? You never need to specify KEEP,KEEP, because SHR does that automatically.
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kolusu
Site Admin
Site Admin


Joined: 26 Nov 2002
Posts: 12378
Topics: 75
Location: San Jose
PostPosted: Tue May 10, 2016 10:44 am    Post subject: Re: Merging multiple input files Reply with quote
jayram99 wrote:

I have a requirement to Merge 3 Input Files and sometimes I might not receive MIS.EXTRACT.ABCD2060.CZT File.
The job should sort/merge other 2 files (MIS.EXTRACT.ABCD2062.LAU and MIS.EXTRACT.ABCD2064.LBL).

How to execute job with only 2 input files. Please advice.

Thank you.


You have 2 options

1. Code an IEFBR14 step with DISP=(MOD,KEEP,DELETE) for each file and even if the file did not exist it will be present for the SORT step.

2.Code the JCL as a PROC and depending on the availability of the files you can DUMMY out the unavailable file.
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jayram99
Beginner


Joined: 16 Aug 2004
Posts: 52
Topics: 21
Location: falls church.va,usa
PostPosted: Wed May 11, 2016 10:17 am    Post subject: Merging multiple input files Reply with quote
Thanks Kolusu.
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