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EMPTY file check scenario


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Digvijay Singh

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Joined: 20 Apr 2022
Posts: 89
Location: India

PostPosted: Fri Oct 28, 2022 3:16 pm
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Hi All,

My requirement I have two file and i want to check if either of the file has data i want to execute the 2nd step, How i can do it in 2 step?

Step1> Need to check two files and if any of the file has data step 2 shoud run
Step2>shoudd run if above any file has data.

Kindly suggest if any way to do it in two steps i am thinking of concatinating both file and see if output file has data or not ,please suggest.

Thanks
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Joerg.Findeisen

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Joined: 15 Aug 2015
Posts: 940
Location: Bamberg, Germany

PostPosted: Fri Oct 28, 2022 3:30 pm
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Use JCL IFTHEN to test for previous JCL CONDs and let step two run if conditions are met.
You will find more than one sample how to test for empty DSNs.
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Willy Jensen

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Joined: 01 Sep 2015
Posts: 639
Location: Denmark

PostPosted: Fri Oct 28, 2022 5:35 pm
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And in case you don't know how to check for an empty dataset, here is one method using SORT (well ICETOOL to be precise):
Code:
//* COUNT .. EMPTY|NOTEMPTY -> RC 12 IF CONDITION IS MET
//C1    EXEC PGM=ICETOOL                                 
//TOOLMSG  DD SYSOUT=*                                   
//DFSMSG   DD SYSOUT=*                                   
//DD1      DD DISP=SHR,DSN=dataset                 
//TOOLIN   DD *                                         
  COUNT FROM(DD1) EMPTY                                 
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Joerg.Findeisen

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Joined: 15 Aug 2015
Posts: 940
Location: Bamberg, Germany

PostPosted: Fri Oct 28, 2022 5:39 pm
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Willy Jensen wrote:
And in case you don't know how to check for an empty dataset, here is one method using SORT (well ICETOOL to be precise):
Code:
//* COUNT .. EMPTY|NOTEMPTY -> RC 12 IF CONDITION IS MET
//C1    EXEC PGM=ICETOOL                                 
//TOOLMSG  DD SYSOUT=*                                   
//DFSMSG   DD SYSOUT=*                                   
//DD1      DD DISP=SHR,DSN=dataset                 
//TOOLIN   DD *                                         
  COUNT FROM(DD1) EMPTY                                 

Code:
//METHOD#1 EXEC PGM=IDCAMS <* RC4 | RC0             
//IDD      DD DISP=OLD,DSN=..     
//SYSPRINT DD SYSOUT=*                               
//SYSIN    DD *                                     
  PRINT IFILE(IDD) COUNT(1)                         
/*
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Rohit Umarjikar

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Joined: 21 Sep 2010
Posts: 2963
Location: NYC,USA

PostPosted: Mon Oct 31, 2022 8:25 am
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Or NULLOFL=? 😊
ibmmainframes.com/about40021.html
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Joerg.Findeisen

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Joined: 15 Aug 2015
Posts: 940
Location: Bamberg, Germany

PostPosted: Mon Oct 31, 2022 11:38 am
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Rohit Umarjikar wrote:
Or NULLOFL=? 😊
ibmmainframes.com/about40021.html

Lines to code should be at a very minimal level for such a task.
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Rohit Umarjikar

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Joined: 21 Sep 2010
Posts: 2963
Location: NYC,USA

PostPosted: Mon Oct 31, 2022 4:33 pm
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Many ways to do get the same thing , 1-2 lines extra shouldn’t be a problem but at least one would know the way.

Setting up RC-12 may not be a good option as it may considered as abend in scheduling but up to RC - 4 is mostly acceptable code set up for any job but if not then TS needs to make that additional change to allow RC-4 acceptable in scheduling.
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