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karunkallore · Beginner Joined: 11 Dec 2004 Posts: 103 Topics: 39

Hi,

Is there a way in which to a program ( either COBOL or PL/I ) i can find the record length of a physical sequential file ?

Thanks in advace,
Karun.

Phantom · Posted: Fri Dec 09, 2005 4:03 am Post subject:

Karunkallore,

Are you trying to read the LRECL of a PS from inside a high level program like COBOL / PLI ???

If so, you can do that by jumping thro' Control blocks (TCB - JFCB - DCB...). You need to allocate your PS to any DD Name and use that DD Name ot search DCB.

Check out the following links.
http://mvsforums.com/helpboards/viewtopic.php?t=1703&highlight=cobol+tiot
http://mvsforums.com/helpboards/viewtopic.php?t=1657&highlight=cobol+tiot

But may we know what is that you are trying to accomplish after getting the LRECL ?

Thanks,
Phantom

semigeezer · Posted: Fri Dec 09, 2005 7:54 am Post subject:

Also, the JFCB will only reflect the dcb information after the data set is opened.

Phantom · Posted: Fri Dec 09, 2005 8:18 am Post subject:

Karunkallore,

As Semigeezer said the DCB will be loaded only when the dataset is opened. So, if you are trying to dynamically allocate some datasets through COBOL and read them them - then this is not the right method. B'cas u need to declare the FD section with the exact LRECL of your file. You can't vary this info. dynamically during run time.

Thanks,
Phantom

karunkallore · Beginner Joined: 11 Dec 2004 Posts: 103 Topics: 39

Hi Phantom/Semigeezer,

Thank you very much for the insight. Yes i a looking forward to read the LRECL of a PS file from a COBOL program. This file is already catalogued and is not allocated dynamically in the code.

This information is required as an input to another set of applications ( in my shop ) to generate reports.

I will go through the referece links given and work on it.

Thank you once again for the help !!!

MVSFORUMS rocks !!!!! Smile

Karun.