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pkrishnakishore · Beginner Joined: 07 Feb 2006 Posts: 4 Topics: 3

Hi,

I am new to VSAM programming,

1) Can somebody tell me how to find whether a vsam file is fixed or variable length by looking at the file.
2) Also what is the definition syntax for a var length KSDS vsam file using IDCAMS.
3) Also while Reproing the var length KSDS vsam file to a flat file, what values should be given to the lrecl and recfm parameters ?

Thanks in advance,
Kishore
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krishna kishore

kolusu · Posted: Mon Oct 16, 2006 7:21 am Post subject:

pkrishnakishore,

1. Type this command at option 6

pkrishnakishore · Beginner Joined: 07 Feb 2006 Posts: 4 Topics: 3

thanks kolusu, I will try it out and will let you know
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krishna kishore

Bill Dennis · Posted: Mon Oct 16, 2006 10:46 am Post subject:

I think you want to use max lrecl + 4 to account for RDW on VB file.
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Regards,
Bill Dennis

Disclaimer: My comments on this foorum are my own and do not represent the opinions or suggestions of any other person or business entity.

bablack · Posted: Mon Oct 16, 2006 1:17 pm Post subject:

Actually all VSAM (except Linear) is variable, meaning that every record starts with its length. But in a LISTCAT if the MAXLRECL and the AVGLRECL values are the same, then it is effectivly a fixed file (all records the same length).
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Bruce A. Black
Senior Software Developer
Innovation Data Processing

Frank Yaeger · Posted: Mon Oct 16, 2006 2:40 pm Post subject:

bablack · Posted: Tue Oct 17, 2006 8:54 am Post subject:

Frank, you are correct. I am used to looking at the physical CIs in VSAM, where you use the lengths in the RDF to move between records.
_________________
Bruce A. Black
Senior Software Developer
Innovation Data Processing