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SQL Tuning Advisor

  • Darl Kuhn
  • Sam R. Alapati
  • Bill Padfield
Chapter

Abstract

To fully understand how the SQL Tuning Advisor tool works, we need to lay some groundwork and explain a few terms. Firstly, the Oracle query optimizer operates in two different modes: normal and tuning. When a SQL statement executes, the optimizer operates in normal mode and quickly identifies a reasonable execution plan. In this mode, the optimizer spends only a fraction of a second to determine the optimal plan.

Copyright information

© Darl Kuhn, Sam R. Alapati and Bill Padfield 2016

Authors and Affiliations

  • Darl Kuhn
    • 1
  • Sam R. Alapati
    • 2
  • Bill Padfield
    • 3
  1. 1.MorrisonUSA
  2. 2.Flower MoundUSA
  3. 3.AuroraUSA

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