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srebba
Warnings : 1
New User
Joined: 26 Apr 2007
Posts: 46
Location: USA
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Hi All,
In CICS, we can change the key length and we can read the KSDS file.
for example, if key has 10 bytes( 2 fields), then we can change the key length dynamically to 5 bytes and get the records instead START on the file.
Like this can we do in batch also.. same VSAM KSDS file.
Please let me know
Thank you
Sree |
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References
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 Posted: Wed Apr 02, 2008 11:16 pm Post subject: Re: Change the key length in batch |
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CICS Guy
Senior Member
Joined: 18 Jul 2007
Posts: 1190
Location: At my desk
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| srebba wrote: |
In CICS, we can change the key length and we can read the KSDS file.
for example, if key has 10 bytes( 2 fields), then we can change the key length dynamically to 5 bytes and get the records instead START on the file.
Like this can we do in batch also.. same VSAM KSDS file. |
Yes, sort of, but not without the START verb.... |
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srebba
Warnings : 1
New User
Joined: 26 Apr 2007
Posts: 46
Location: USA
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so you mean, we have to use START verb in batch program..
am i right ? |
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Bill O'Boyle
Active User
Joined: 14 Jan 2008
Posts: 293
Location: Orlando, FL, USA
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Well, you CAN issue a partial-key direct READ, using a keylength-halfword value along with the GENERIC option.
But for the most part, a STARTBR is the most popular command used to begin reading a KSDS file using a partial-key.
Again, don't forget the GENERIC parameter, which is required. Otherwise, you'll raise an INVREQ condition.
HTH....
Regards,
Bill |
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Bill O'Boyle
Active User
Joined: 14 Jan 2008
Posts: 293
Location: Orlando, FL, USA
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Oops! That one went right by me. 
Do what CICS Guy has suggested.
Regards,
Bill |
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srebba
Warnings : 1
New User
Joined: 26 Apr 2007
Posts: 46
Location: USA
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HI Bill O'Boyle
we can do it in CICS as you said,
but can we do in batch.. I dont want use START command as in CICS.. |
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CICS Guy
Senior Member
Joined: 18 Jul 2007
Posts: 1190
Location: At my desk
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| srebba wrote: |
we can do it in CICS as you said,
but can we do in batch.. I dont want use START command as in CICS.. |
If you want to use a key shorter than the one defined for the dataset, you will need to use the START followed by READ NEXT/PREVIOUS..... |
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rpuhlman
Active User
Joined: 11 Jun 2007
Posts: 75
Location: Columbus, Ohio
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Hi Sree,
There is a great book called "VSAM for the COBOL Programmer" by Doug Lowe. Go to www.murach.com ... they have it for $22.00 dollars. You will learn many processing techniques in both the batch and online environments.
Rick |
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