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raveendra_ibm · Beginner Joined: 02 Apr 2006 Posts: 32 Topics: 10

Hi All,

Can anyone help me out by explaining how to use checkpoint/restart feature in cobol.
I have gone through the forums to find many posts on this but couldn't find appropriate
examples that could have been self explanatory. Could you please provide me with
a sample code to demonstrate the checkpoint feature in cobol (using RERUN clause
i suppose) and also the corresponding JCL.

Thanks and Regards,
Raveendra.

kolusu · Posted: Tue Apr 04, 2006 11:45 am Post subject:

raveendra_ibm,

Please search before posting. The checkpoint restart logic is explained in detail here.

http://www.mvsforums.com/helpboards/viewtopic.php?t=1318&highlight=checkpoint

Hope this helps...

Cheers

Kolusu
_________________
Kolusu
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raveendra_ibm · Beginner Joined: 02 Apr 2006 Posts: 32 Topics: 10

Hi Kolusu,

Thanks for your reply.

I came through this particular post that you referred to. But I was wondering if the Check point option that
I am talking about is anyway related to DB2 or IMS ?

I thought it was just a COBOL and JCL affair.

As I am new to mainframes my questions may sound weird. Please bear with me.

If a requirement is such that you need to write 4000 records into different files read from a single file,
and if the job abends after 2000 records(say), then how can we set a checkpoint in the cobol program
to ensure that we resume from 2001 record.

Could you please provide me with the corresponding JCL also.

Thanks and Regards,
Raveendra.

kolusu · Posted: Wed Apr 05, 2006 4:34 am Post subject:

raveendra_ibm,

Checkpoint is an IMS feature.

IMS automatically takes care of re-positioning the files after a restart. You really would not understand with just the JCL. I suggest that you read the IMS manuals and the best approach is to look in your shop for an existing example.

Hope this helps...

Cheers

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