MVSFORUMS.com

OSCORP · Beginner Joined: 15 Oct 2004 Posts: 29 Topics: 8

Hello All,

Need some help in determining the best value for the DFSORT default parameters.

1) Enable ICEGENER or IEBGENER:
Advantages of ICEGENER over IEBGENER in terms of allocation memory and using system resources

2) VERIFY:
Need detail information about VERIFY parameter. Any link would be helpful.

3) SDBMSG:
Is SDBMSG parameter still supported in DFSORT? If yes, then a informational link would help.

tc,
OsCorp

kolusu · Posted: Mon Dec 13, 2004 8:41 am Post subject:

Oscorp,

Check this link for a detailed explanation of the advantages of using ICEGENER Instead of IEBGENER

http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/ICE1CA00/9.2.17?SHELF=&DT=20031124143823&CASE=

Check this link which explains in detail about the VERIFY parameter.

http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/ICE1CA00/6.16?DT=20031124143823

SDBMSG is supported by DFSORT which Specifies whether DFSORT and ICETOOL should use the system-determined optimum block size for message and list data sets when the block size is zero. Check this link for Installation Defaults

http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/ICE1CA00/1.10?DT=20031124143823

Alternatively you can run the following DFSORT/ICETOOL job to list your shop installed defaults for DFSORT

Frank Yaeger · Posted: Mon Dec 13, 2004 10:09 am Post subject:

1) ICEGENER uses DFSORT copy rather than IEBGENER whenever possible. In general, DFSORT copy is more efficient than IEBGENER, since DFSORT can use EXCP and optimized buffering. We recommend the use of ICEGENER.

2) The link that Kolusu gave describes the VERIFY operator of DFSORT's ICETOOL. It's not clear if you're asking about that, or DFSORT's VERIFY parameter (ICEMAC VERIFY=YES/NO). VERIFY=YES can degrade performance and is NOT recommended.

3) DFSORT supports the SDBMSG=YES/NO parameter. Here's a better link for information on SDBMSG. Use it and then do a find on "SDBMSG".

http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/ICE1CI00/2.2.7?DT=20031124122307

You can access all of the DFSORT books online from:

http://www.ibm.com/servers/storage/support/software/sort/mvs/srtmpub.html
_________________
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

OSCORP · Beginner Joined: 15 Oct 2004 Posts: 29 Topics: 8

Thanks a lot Kolusu & Frank...and sorry for the late reply...Totally swamped with the work..
Will catch you guys later...!

OsCorp