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meetrb · Beginner Joined: 24 Nov 2003 Posts: 40 Topics: 15

Hi,
While going through an IDCAMS control card for an extended VSAM, I came across a comment "Add 8 bytes for Shrink". The physical record length of this file is greater than the logical length by 8 bytes.

Is there any requirement that the physical record length of an extended VSAM has to be greater than the logical length by 8 bytes?

Regards,
Meetrb

kolusu · Posted: Sat Sep 24, 2005 7:30 am Post subject:

Meetrb,

The additional 8 bytes you see might belong to the Compression software( SHRINK/MVS) and has got nothing to do with the EXTENDED feature. CA bought Shrink/MVS, Shrink/IMS, and Shrink/DB2 from Sterling software and renamed to CA-Compress for MVS, IMS, and DB2 respectively.

Hope this helps...

Cheers

Kolusu
_________________
Kolusu - DFSORT Development Team (IBM)
DFSORT is on the Web at:
www.ibm.com/storage/dfsort

www.linkedin.com/in/kolusu

meetrb · Beginner Joined: 24 Nov 2003 Posts: 40 Topics: 15

Thanks Kolusu.

Is there any user interface to this CA-Compress tool that we can use in order identify the files which have been defined with this shrink option?

Regards,
Meetrb

kolusu · Posted: Mon Sep 26, 2005 4:36 am Post subject:

meetrb,

I have never worked on CA-COMPRESS and I don't even have access to the manuals , so sorry.

Kolusu
_________________
Kolusu - DFSORT Development Team (IBM)
DFSORT is on the Web at:
www.ibm.com/storage/dfsort

www.linkedin.com/in/kolusu

meetrb · Beginner Joined: 24 Nov 2003 Posts: 40 Topics: 15

Thanks for the information Kolusu