Articles & Content
Topic: 2005 NA
Subtopic: DB2 for z/OS
DATE: 2005-05-24 (12:30 PM - 01:40 PM)
SPEAKERS: Terry Purcell (IBM Silicon Valley Lab)
Ever wondered why the DB2 optimizer chooses a certain access path? Before DB2 UDB V8, you had to be an optimizer expert to answer that question. This presentation will outline a method to utilize the extensive access path detail available with V8 Visual Explain and compare with the actual reality for a given query. The end result is that you will be able tune SQL like an expert.
EXP. LEVEL: Beginner,Intermediate,Advanced
Comparing Estimates with Reality
What do I do if the estimate is incorrect?
Automating the process
This file is being provided by IDUG. We would encourage you to join IDUG to get full access to all of our files and resources. Joining IDUG is FREE and signing up is simple. Click here to join! or login!Click to Download
NOTE: These are only open to members of IDUG. If you are not a member, please CLICK HERE for more information.