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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270 DB2 UDB V8 and WebSphere V5 Performance Tuning and Operations Guide
For some circumstances temporary tables are very helpful and in some case
they can become very big. With DB2 UDB Version 8 it is now possible to optimize
the access to the data in temporary tables because it is now possible to create
indexes and update the statistics on them. With these options the temporary
tables are now much more powerful than in former versions.
So think about a very large temporary table in your system. Every time you need
some data from that table a tablescan on this temporary table is necessary. With
an index and with statistical data it is now possible to have the same performance
as with regular tables.
7.2.5 Concurrency
When designing application ...
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