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Arian · Beginner Joined: 24 Sep 2004 Posts: 10 Topics: 3

Hi,

I have a batch program that reads a VSAM file.
The key lenght is 10 bytes. But I dnt know the first 5 bytes of the key. I know the last 5 bytes of the key.
Can i read the VSAM file with this information.
I dnt want to do a sequential read.

kolusu · Posted: Tue Sep 28, 2004 11:53 am Post subject:

Arian,

Populate the first 5 bytes of the key with low-values and read the vsam file until your key is GE than the look up key

Hope this helps...

Cheers

kolusu
_________________
Kolusu
www.linkedin.com/in/kolusu

Arian · Beginner Joined: 24 Sep 2004 Posts: 10 Topics: 3

Kolusu, this would mean start from the begining ?
Its sequential read !

kolusu · Posted: Tue Sep 28, 2004 2:12 pm Post subject:

Arian,

If the access mode is dynamic, code START followed by READ NEXT, the next record is read and the file position indicator is reset to the next record. You can move the file position indicator randomly by using START, but all reading is done sequentially from that point.

Check this link which explains in detail Reading records from a VSAM file

http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/igy3pg10/1.10.3.3?DT=20020923143836

Hope this helps...

cheers

kolusu
_________________
Kolusu
www.linkedin.com/in/kolusu