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JCL and IDCAMS: $DUMMY?

 
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pauly_william

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Joined: 15 Oct 2007
Posts: 27
Location: Canada

PostPosted: Tue Jul 07, 2009 9:37 pm    Post subject: JCL and IDCAMS: $DUMMY?
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Oy to all,

I'm looking at a job another guy that no longer works here use to manage...this was part of an install job for a program product. I'm still rather green to JCL and just learning about IDCAMS... my question is regarding the "$DUMMY" statement in this job. What is this lonesome $ sign infront of "DUMMY" telling IDCAMS? I've been unable to find a reference anywhere and for some reason it just doesn't look right to me.

Code:
//STEP02   EXEC PGM=IDCAMS                                     
//SYSPRINT DD SYSOUT=A                                         
//IN    DD *                                                   
$DUMMY                                                         
//SYSIN DD *                                                   
 DEFINE CLUSTER(NAME(HLQ.BLAH.BLAH) VOLUME(??????) +           
 SHAREOPTIONS(2) +                                             
 RECORDSIZE(56 254) CYL(2 2) INDEXED KEYS(52 0) )               
 REPRO INFILE(IN) OUTDATASET(HLQ.BLAH.BLAH)                   
 LISTCAT ENTRY(HLQ.BLAH.BLAH) ALL
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dick scherrer

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Joined: 23 Nov 2006
Posts: 19270
Location: Inside the Matrix

PostPosted: Tue Jul 07, 2009 10:01 pm    Post subject:
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Hello,

It doean't mean anything. . .

It is just a dummy record that is being loaded into the file so it will not be empty.

The code that uses that file probably knows that $DUMMY is a dummy record. . .
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