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PrakashT · Beginner Joined: 07 Jun 2003 Posts: 1 Topics: 1

Can we OPEN and CLOSE A VSAM FILE USING JCL ? If YES ,then HOW?

coolman · Posted: Fri Jun 13, 2003 3:49 am Post subject:

PrakashT,
Can you please elaborate on your requirement ?
Answering your question, explicit "OPEN" and "CLOSE", Iam afraid is possible only through a program.

Cheers,
Coolman
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Jaguar XK140 history

coolman · Posted: Fri Jun 13, 2003 4:12 am Post subject:

PrakashT,
Can you please elaborate on your requirement ?
Answering your question, explicit "OPEN" and "CLOSE", Iam afraid is possible only through a program.

Cheers,
Coolman
________
Fuji Rabbit

taterhead · Beginner Joined: 02 Dec 2002 Posts: 7 Topics: 0

slade · Posted: Sun Jun 15, 2003 3:41 pm Post subject:

PrakashT,

Just curious, what do you hope to accomplish once you discover how to do this?

Regards, Jack.

coolman · Posted: Mon Jun 16, 2003 4:11 am Post subject:

Taterhead,
What I meant was what are you going to achieve by just opening and closing a file, unless you do some processing with it. Also, Can you please provide me some manuals on VERIFY operator of IDCAMS program

Cheers,
Coolman.
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Ford Mondeo V6 engine

Rama_Prayaga · Beginner Joined: 20 May 2003 Posts: 45 Topics: 15

hi,

Can you tell be whether the VSAM file you are using is used in ONLINE?

slade · Posted: Mon Jun 16, 2003 5:58 pm Post subject:

Hi Coolman,

When files have not been successfully OPENed/CLOSed they cannot be OPENed successfully for READs and non-sequential output.

VSAM files have a similar problem. The solution for them is to create a "dummy" record before it's used, especially in a CICS environment where the 1st use is usually a random record add. The 1st add will fail without the dummy rec.

I've often wondered (but never had the chance to test it) if a simple OPEN/CLOSE for VSAM files would serve the same purpose as the "dummy" rec. I've read that VSAM modifies a cntl field somewhere when a record is written and that OPEN checks the field. That may be why the "dummy" rec is required and an initial VSAM OPEN/CLOSE won't turn the trick.

This may be what PrakashT has in mind. I hope he answers.

Regards, Jack.

ofer71 · Posted: Tue Jun 17, 2003 1:09 am Post subject:

Hi

I'm using EXCI to "play" with VSAM files from batch.
In other words, I'm running "EXEC CICS SET FILE..." from batch.
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slade · Posted: Tue Jun 17, 2003 5:14 pm Post subject:

ofer71,

Aaand?........