Portal | Manuals | References | Downloads | Info | Programs | JCLs | Mainframe wiki | Quick Ref
IBM Mainframe Computers Forums Index
 
Register
 
IBM Mainframe Computers Forums Index Mainframe: Search IBM Mainframe Forum: FAQ Memberlist Profile Log in to check your private messages Log in
 
Will changing BUFFERPOOL help performance ?

 
Post new topic   Reply to topic    IBMMAINFRAMES.com Support Forums -> DB2
View previous topic :: :: View next topic  
Author Message
sushanth bobby

Senior Member


Joined: 29 Jul 2008
Posts: 1013
Location: India

PostPosted: Fri Jan 23, 2009 7:50 pm    Post subject: Will changing BUFFERPOOL help performance ?
Reply with quote

Hi,

I have table of rowLENGTH 8138 & PageSize 8K. It is assign'd to BUFFERPOOL of BP8K. According to the pagesize, only one record can fit in a page.

So, if i ALTER TABLESPACE to bufferpool BP16K, and the pagesize will be 16K, so that 2 records can fit in a page.

Will there be any performance improvement ?

Sushanth
Back to top
View user's profile Send private message

dick scherrer

Site Director


Joined: 23 Nov 2006
Posts: 19270
Location: Inside the Matrix

PostPosted: Sat Jan 24, 2009 2:11 am    Post subject:
Reply with quote

Hello,

Probably only if both rows are selected at the same time. . . As both rows would be "in core" some i/o might be saved.
Back to top
View user's profile Send private message
sushanth bobby

Senior Member


Joined: 29 Jul 2008
Posts: 1013
Location: India

PostPosted: Mon Jan 26, 2009 12:23 am    Post subject:
Reply with quote

Thank You Dick
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 -> DB2 All times are GMT + 6 Hours
Page 1 of 1

 

Search our Forum:

Similar Topics
Topic Author Forum Replies Posted
No new posts Changing sort Card Dynamically vickey_dw DFSORT/ICETOOL 5 Sat Aug 19, 2017 2:33 pm
No new posts BI,TO=ZD Changing Values Tyler Dunbar DFSORT/ICETOOL 4 Tue Jul 25, 2017 12:12 am
No new posts CONTIG for performance? JPVRoff JCL & VSAM 8 Fri Jun 09, 2017 8:39 am
No new posts Changing of LRECL of a file abdulrafi DFSORT/ICETOOL 2 Fri Mar 24, 2017 3:25 pm
No new posts BC, BCR, BRC, BRCL performance steve-myers PL/I & Assembler 0 Fri Dec 23, 2016 7:44 am

Facebook
Back to Top
 
Job Vacancies | Forum Rules | Bookmarks | Subscriptions | FAQ | Polls | Contact Us