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sree_learning · Posted: Thu Dec 22, 2005 1:09 am Post subject: Space allocation discrepancies

Hi,

I was browsing thru the following interesting topic about Space allocation in a dataset -

http://www.mvsforums.com/helpboards/viewtopic.php?t=28&highlight=space+calculate
http://www.mvsforums.com/helpboards/viewtopic.php?p=8947#8947

However, I came across a situation where, in my program I am mentioning that 'RECORD CONTAINS 349 CHARACTERS' while defining for my output file.

In my JCL, in the corresponding DD dsn of this file I am mentioning the LRECL=349 & BLKSIZE=34900.

Result is I got a S0C4 abend with the message - o/p file Open or close error.

Then, I went ahead and changed the BLKSIZE to 30712 (which is 349 * 88) and the pgm went thru fine.

The file in the consideration is a FB file.

Any reasons as to while this happened. I mean, why 34900 ( though a valid multiple of my LRECL) is not getting accepted and 30712 ( this too, being a valid multiple) is working fine.
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- Sree

Mervyn · Posted: Thu Dec 22, 2005 4:57 am Post subject:

The maximum value of BLKSIZE is 32760 for DASD.
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sree_learning · Posted: Thu Dec 22, 2005 5:17 am Post subject:

Ok. Thanks.
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- Sree

Phantom · Posted: Thu Dec 22, 2005 5:48 am Post subject:

Mervyn · Posted: Thu Dec 22, 2005 10:00 am Post subject:

Sometimes, logic reaches a brick wall. 8)
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The day you stop learning the dinosaur becomes extinct