Frank: Sorting With Filsz Parm


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  Posted by Guest - Frank: Sorting With Filsz Parm :
Frank, our company is converting all sorts and using filsz to prevent space allocation errors when using sortwk files, so we will be getting rid of all sortwk's in the control cards.

So basically the main standard that was recommended was

REGION=512M on the job and then using:
OPTION DYNALLOC=(SYSDA,8),FILSZ=E3500000

The total file size in bytes will range from 2 billion to 5 billion bytes.

I'm not quite sure where they came up with 512M as the number, and I don't think FILSZ is needed.  I'm curious what your thoughts are on this or what you would recommend?

Frank Yaeger Says:
I don't know where they came up with 512M either.

DYNALLOC=(SYSDA,8) seems reasonable.

As for FILSZ, it is usually not needed.  The only cases where it is needed are described at:

http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/ICE1CA60/A.4.1.3?SHELF=&DT=20110608113434&CASE=

I would recommend only setting FILSZ for jobs where it IS NEEDED.  Another recommendation would be to set the DYNALOC and DYNSPC installation options appropriately to take care of most of the jobs and then only use the runtime option for particular jobs that need them.  

Guest Says:
Thanks, I'm glad to see you see it the same way I do, I thought maybe there was something I was missing :-)   Thats also a good page about determining the size as I think alot of people are confused on that.


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