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IBM DB2 9 for z/OS: New Tools for Query Optimization

IBM Redbooks

IBM DB2 9 for z/OS: New Tools for Query Optimization

The cost-based optimizer of IBM DB2 for z/OS has continually evolved since its initial inception. Support has included new optimization algorithms, join methods, complex relational data structures, such as star schemas. DB2 for z/OS V8 has provided access path visualization and a Statistics Advisor function through a new Visual Explain.

DB2 9 for z/OS starts addressing the challenge of reducing cost of ownership by extending query optimization through expert-based query and workload analysis, server enhancements, and an Index Advisory function. These functions are delivered with two tools: DB2 Optimization Service Center and DB2 Optimization Expert.

This book helps you understand the installation, customization, and usage aspects of the tools. You are guided through scenarios of gradually increasing complexity where the functions of the tools are exploited for query optimization.
Price: $56.25
Pages: 458
Date Published: December 13, 2007
ISBN: 0738488615
Author: IBM Redbooks
Product Number: SG24-7421-00
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