Michael,

Yes, thanks.  It is just the sortwk datsets that are the issue.

Dave Jousma
Vice President | Director, Technology Engineering





From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of 
Michael Oujesky <reflect...@oujesky.net>
Date: Tuesday, April 16, 2024 at 3:24 PM
To: IBM-MAIN@LISTSERV.UA.EDU <IBM-MAIN@LISTSERV.UA.EDU>
Subject: Re: Anyone exploiting ZEDC?
Food for thought. zEDC is block oriented rather than record oriented (i. e. 
reads/writes full track blocks on DASD and BLKSIZE become logical (i. e. the 
size of the buffer used to exchange data with the application)), so any 
processing that expects


Food for thought.  zEDC is block oriented rather than record oriented

(i.e. reads/writes full track blocks on DASD and BLKSIZE become

logical (i.e. the size of the buffer used to exchange data with the

application)), so any processing that expects to make use of BLKSIZE

to perform physical I/O (random, update, etc) will fail.



Thus DFSORT will have issues for SORTWK datasets, but not

SORTIN/SORTOUT datasets.



Michael



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