Title: Expert Oracle SQL optimization, deployment, and statistics | Author(s): Hasler, Tony | Publisher: Apress | Year: 2014 | Edition: 1st ed | Language: English | Pages: 571 | ISBN: 1430259779, 978-1-4302-5977-0, 978-1-4302-5978-7 | Size: 2 MB | Extension: pdf
Expert Oracle SQL: Optimization, Deployment, and Statistics is about optimizing individual SQL statements, especially on production database systems. This Oracle-specific book begins by assuming you have already identified a particular SQL statement and are considering taking steps to improve its performance. The book describes a systematic process by which to diagnose a problem statement, identify a fix, and to implement that fix safely in a production system. Youll learn not only to improve performance when it is too slow, but also to stabilize performance when it is too variable. Youll learn about system statistics and how the Cost-Based Optimizer uses them to determine a suitable execution plan for a given statement. That knowledge provides the foundation from which to identify the root cause, and to stabilize and improve performance.
Next after identifying a problem and the underlying root cause is to put in place a solution. Expert Oracle SQL: Optimization, Deployment, and Statistics explains how to apply various remedies such as changing the SQL statement, adding hints, changing the physical design, and more, and how they can be brought to bear on fixing a problem once and for all.
Rolling a change out smoothly is an important topic when dealing with tuning and optimization. Expert Oracle SQL: Optimization, Deployment, and Statistics does not let you down in this critical area. The book contains two chapters of good information from an experienced professional on how to safely deploy changes into production so that your systems remaining running and available throughout the deployment process.
The Cost-Based Optimizer
Basic Execution Plan Concepts
The Runtime Engine
Introduction to Tuning
Object Statistics and Deployment
Advanced SQL Concepts
Advanced Execution Plan Concepts
Final State Optimization
Why Do Things Go Wrong?
Physical Database Design
Advanced Tuning Techniques
Managing Statistics with TSTATS
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