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Best European Speaker: SQL and AccessPaths - "A DIY Way to Survive" for Both Static and Dynamic SQL (B09)

Topic: DB2 for z/OS

Subtopic: 2007



DATE: 2007-5-9 (09:50 AM - 10:50 AM)
SPEAKERS: Frank Petersen (Bankdata)

This presentation will be a follow-up, yet stand-alone capable, to a presentation given at IDUG, Berlin 2005. Where that presentation (among other things) had some theoretically suggestions about what can be done to capture dynamic SQL and doing EXPLAIN of this; this presentation will be a walk-through of a physical implementation that Bankdata has made according to these suggestions. Bankdata has made first version of an implementation where we catch dynamic SQL and document the accesspath selections. This documentation is saved in a historical database for both dynamic AND static SQL. This solution will be described in detail, covering both how it was done, problems met and successes experienced (if any).

EXP. LEVEL: Beginner,Intermediate

OBJECTIVES:

Understand the importance and problems inside dynamic SQL and accesspath selection

Understand the importance of documenting and saving explain information for a long time

Understand the pro's and con's of developing a homemade solution

Get inspiration as to what can be done and as to what to look after in vendor-solutions

Inspiration is the keyword



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