Joined: 08 Oct 2004 Posts: 274 Topics: 52 Location: California
Posted: Mon Sep 25, 2006 1:31 pm Post subject: What
Our shop is considering switching sort products. We do mostly standard Include/Omit selection criteria. What are the "GOTCHAS' between the two? We are running zOS 1.4. _________________ Thanks,
NASCAR9
Joined: 02 Dec 2002 Posts: 1618 Topics: 31 Location: San Jose
Posted: Mon Sep 25, 2006 4:39 pm Post subject:
NASCAR9,
Send me your e-mail address offline (yaeger@us.ibm.com) and I'll send you some documents prepared by the DFSORT Team that will answer your question in detail. Please put "DFSORT" somewhere in your Subject line to catch my attention. _________________ Frank Yaeger - DFSORT Development Team (IBM)
Specialties: JOINKEYS, FINDREP, WHEN=GROUP, ICETOOL, Symbols, Migration
DFSORT is on the Web at:
www.ibm.com/storage/dfsort
Joined: 03 Jan 2003 Posts: 550 Topics: 23 Location: Michigan, USA
Posted: Tue Sep 26, 2006 10:37 am Post subject:
If you are using FOCUS and will be processing large input files with any kind or sort, then you should investigate the DFSPARM DD statement and the FILESZ=Ennnn parameter to allow the sort space to be preallocated correctly. We had a number of problems with this.
Joined: 02 Dec 2002 Posts: 1618 Topics: 31 Location: San Jose
Posted: Tue Sep 26, 2006 12:07 pm Post subject:
NASCAR9,
I've sent you the documents. Please read through them and feel free to send me an e-mail offline if you have any specific questions not answered by the docs. Note that all of the DFSORT books are available online from:
I don't know anything about how FOCUS uses DFSORT, but if it passes all of the records to DFSORT through an E15 exit and does NOT tell DFSORT the filesize (not a good design), then DFSORT will use the DYNSPC installation value to determine how much space to allocate. If the DYNSPC installation value is insufficient, you can increase it. It wouldn't be necessary to pass FILSZ (FILSZ is the correct parameter name, not FILESZ) for each FOCUS job, although you can if you want to.
Note that, in general, FILSZ isn't needed because DFSORT can determine the filesize automatically in all but a few cases (e.g. when all of the records are passed to DFSORT via an E15). And in those cases, DYNSPC will usually take care of it. So don't assume that there will be a problem. _________________ Frank Yaeger - DFSORT Development Team (IBM)
Specialties: JOINKEYS, FINDREP, WHEN=GROUP, ICETOOL, Symbols, Migration
DFSORT is on the Web at:
www.ibm.com/storage/dfsort
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