March 2004
Intermediate to advanced
440 pages
11h 46m
English
book
DB2 UDB V8 and WebSphere V5 Performance Tuning and Operations Guide
by Whei-Jen Chen, Peter Z He, Kang Yong Ying, Andreas Paulsen, Sunminder S Saini
Content preview from DB2 UDB V8 and WebSphere V5 Performance Tuning and Operations Guide
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Chapter 7. Monitoring and tuning of DB2 UDB V8 273
7.3.1 Tuning the buffer pools
When creating a buffer pool (DB2 CREATE BUFFERPOOL) you have to specify
the size of a buffer pool. The size specifies the amount of pages to use. When
using -1, the DB parameter
BUFFPAGE is used to specify the size of the buffer
pool. To change the size use DB2 ALTER BUFFERPOOL, when the size of the
buffer pool is -1 then change the BUFFPAGE.
In prior DB2 UDB versions it was necessary to increase the DBHEAP parameter
when using more space for the buffer pool. With version 8 nearly all buffer pool
memory, including page descriptors, buffer pool descriptors, and th ...
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