Code
CV962RO
Duration
5 days
Price
1500 €*
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DescriptionWhat we offer

This course is designed to teach you how to prevent application performance problems and to improve the performance of existing applications.

ObjectivesWhat you learn

  • Design better indexes
  • Determine how to live with the optimizer (avoid pitfalls, help when necessary)
  • Avoid locking problems
  • Use accounting traces to find significant performance problems in an operational application

TopicsThe best for you

Introduction to Application Performance and Tuning

  • Why Performance Disappoints
  • Causes of Performance Problems
  • A Simple Example
  • SQL EXPLAIN Information
  • Modify the Index
  • The Accounting Trace
  • Accounting Trace Information
  • Filter Factors
  • Another Index Modification
  • Who Detects Problems?
  • When Should Problems be Detected?
  • VQUBE2
  • What is a Touch?
  • Further Analysis (1 of 2)
  • Further Analysis (2 of 2)
  • The Message

Performance Analysis Tools

  • Components of Response Time
  • Methodology Formulas
  • VQUBE2
  • Simple Example in VQUBE2
  • SQL EXPLAIN
  • The Plan Table
  • Running the Explain
  • Interpreting the Results
  • The Accounting Trace
  • Reading an Accounting Trace
  • The Bubble Chart
  • Monitoring Execution
  • Performance Thresholds
  • Tuning Potential

Towards Better Indexes

  • Section 3.1 DB2 Index Structure and Usage, Part 1
  • Section 3.2 DB2 Index Structure and Usage, Part 2
  • Section 3.3 Tuning Methodology and Index Cost
  • Section 3.4 Lab 1: Customer Order Application
  • Section 3.5 Index Design
  • Section 3.6 Lab 2: Poorly Performing Application

** Machine Exercise 1 - Designing Indexes **

  • Section 3.7 Advanced Access Paths

Multiple Table Access

  • Section 4.1 Joining Issues
  • Section 4.2 Lab 3: Joining Tables
  • Section 4.3 Subqueries and Global Query Optimization
  • Section 4.4 Lab 4: Different Implementations of One Problem
  • Section 4.5 Union, Except, and Intersect

** Machine Exercise 2 - Subqueries **
Towards Better Tables

  • Section 5.1 Table Design
  • Section 5.2 Materialized Query Tables
  • Section 5.3 Temporal Tables

** Machine Exercise 3 - MQTs and Denormalized Tables **
Learning to Live with the Optimizer

  • Section 6.1 Dangerous Predicates

** Machine Exercise 4 - NonIndexable and NonBoolean Predicates **

  • Section 6.2 Lab 5: Introduction to Browsing
  • Section 6.3 Filter Factors
  • Section 6.4 Helping the Optimizer

** Machine Exercise 5 - Helping the Optimizer **
Massive Batch

  • Section 7.1 Batch Performance Issues
  • Section 7.2 Benefit Analysis
  • Section 7.3 Massive Delete

Locking Issues

  • Section 8.1 Serialization
  • Section 8.2 Transaction Locking
  • Section 8.3 Application Design

** Machine Exercise 6 - Locking Issues **
Course Summary
Components of CPU Time

 

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PrerequisitesWhat should you know

You should have:

  • Familiarity with DB2 for z/OS application programming

AudienceWho should attend

This advanced course is for DB2 for z/OS application developers, DB2 for z/OS DBAs and anyone else with a responsibility for application performance and tuning in a DB2 for z/OS environment.