Portal | Manuals | References | Downloads | Info | Programs | JCLs | Master the Mainframes
IBM Mainframe Computers Forums Index
 
Register
 
IBM Mainframe Computers Forums Index Mainframe: Search IBM Mainframe Forum: FAQ Memberlist Usergroups Profile Log in to check your private messages Log in
 

 

Any tuning options for IEBGENER or any replacement?

 
Post new topic   Reply to topic    IBMMAINFRAMES.com Support Forums -> JCL & VSAM
View previous topic :: :: View next topic  
Author Message
vijikesavan

Active User


Joined: 04 Oct 2006
Posts: 118
Location: NJ, USA

PostPosted: Mon Sep 17, 2007 11:02 pm    Post subject: Any tuning options for IEBGENER or any replacement?
Reply with quote

Hi,
I have a JCL which converts huge Tape datasets to DASD using IEBGENER.
The job uses lots of CPU as well as elapsed time.
Is there any other utility to use instead of IEBGENER? will sort or IDCAMS are good enuf in terms of reducing the CPU?

Any pointers will be of great help.
Thanks,
Viji
Back to top
View user's profile Send private message

Frank Yaeger

DFSORT Moderator


Joined: 15 Feb 2005
Posts: 7130
Location: San Jose, CA

PostPosted: Mon Sep 17, 2007 11:25 pm    Post subject:
Reply with quote

Quote:
will sort or IDCAMS are good enuf in terms of reducing the CPU?


The only way to find out for sure is to try it yourself and compare. If you have DFSORT, you can just change PGM=IEBGENER to PGM=ICEGENER to use DFSORT's ICEGENER.
Back to top
View user's profile Send private message
krisprems

Active Member


Joined: 27 Nov 2006
Posts: 649
Location: India

PostPosted: Tue Sep 18, 2007 1:40 pm    Post subject:
Reply with quote

vijikesavan

You can know about Performance
Features of ICEGENER here http://publibz.boulder.ibm.com/epubs/pdf/ice1ct00.pdf
Back to top
View user's profile Send private message
Frank Yaeger

DFSORT Moderator


Joined: 15 Feb 2005
Posts: 7130
Location: San Jose, CA

PostPosted: Tue Sep 18, 2007 9:48 pm    Post subject:
Reply with quote

Krisprems,

The DFSORT Tuning Guide you referenced has general information about performance, but there are many "variables". As I said, the only sure way to determine performance for a specific situation is to do a comparison for that specific situation.
Back to top
View user's profile Send private message
ofer71

Global Moderator


Joined: 27 Dec 2005
Posts: 2360
Location: Israel

PostPosted: Wed Sep 19, 2007 12:23 am    Post subject:
Reply with quote

Frank -

The numbers regarding IEBGENER vs. ICEGENER from the tuning guide seem very definitive and convincing... I was pretty amazed, even without testing.

O.
Back to top
View user's profile Send private message
Frank Yaeger

DFSORT Moderator


Joined: 15 Feb 2005
Posts: 7130
Location: San Jose, CA

PostPosted: Wed Sep 19, 2007 1:00 am    Post subject:
Reply with quote

Again, those results were obtained for a particular situation. See the caveat at:

http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/ICE1CT00/PREFACE.7?DT=20031124135012

It's certainly true that DFSORT's ICEGENER will do quite well in many situations. I'd be the last person to "knock" DFSORT's ICEGENER in any way (I developed the front end to DFSORT Copy for it). I'm just trying to indicate that as always your mileage may vary, and the only way to know for sure is to try it for a given situation.
Back to top
View user's profile Send private message
Bitneuker

CICS Moderator


Joined: 07 Nov 2005
Posts: 1105
Location: The Netherlands at Hole 19

PostPosted: Wed Sep 19, 2007 4:24 am    Post subject:
Reply with quote

Quote:
will sort or IDCAMS are good enuf in terms of reducing the CPU?


Did you try IDCAMS?
Back to top
View user's profile Send private message
View previous topic :: :: View next topic  
Post new topic   Reply to topic    IBMMAINFRAMES.com Support Forums -> JCL & VSAM All times are GMT + 6 Hours
Page 1 of 1

 

Search our Forum:

Similar Topics
Topic Author Forum Replies Posted
No new posts PL/I code tuning/Performance improvement Virendra Shambharkar PL/I & Assembler 4 Mon Dec 05, 2016 11:57 am
No new posts DB2 Unload format options Susanta DB2 2 Fri Aug 12, 2016 5:42 pm
No new posts Replacement FTP to SFTP Vasili Koipish All Other Mainframe Topics 1 Wed May 11, 2016 3:10 pm
No new posts Performance tuning of Online system bipinpeter All Other Mainframe Topics 2 Thu Nov 26, 2015 2:29 pm
No new posts Endevor - Compiler Options. Chetan Kumar Mainframe Interview Questions 4 Tue Oct 20, 2015 6:32 pm


Facebook
Back to Top
 
Mainframe Wiki | Forum Rules | Bookmarks | Subscriptions | FAQ | Tutorials | Contact Us