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Oracle Database 11gR2 Performance Tuning Cookbook

You're reading from   Oracle Database 11gR2 Performance Tuning Cookbook Shifting your Oracle Database into top gear takes a lot of know-how and fine-tuning ability. The 80+ recipes in this Cookbook will give you those skills along with the ability to troubleshoot if things starts running slowly.

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Product type Paperback
Published in Jan 2012
Publisher Packt
ISBN-13 9781849682602
Length 542 pages
Edition 1st Edition
Languages
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Author (1):
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Ciro Fiorillo Ciro Fiorillo
Author Profile Icon Ciro Fiorillo
Ciro Fiorillo
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Toc

Table of Contents (21) Chapters Close

Oracle Database 11gR2 Performance Tuning Cookbook
Credits
About the Author
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
1. Starting with Performance Tuning FREE CHAPTER 2. Optimizing Application Design 3. Optimizing Storage Structures 4. Optimizing SQL Code 5. Optimizing Sort Operations 6. Optimizing PL/SQL Code 7. Improving the Oracle Optimizer 8. Other Optimizations 9. Tuning Memory 10. Tuning I/O 11. Tuning Contention Dynamic Performance Views A Summary of Oracle Packages Used for Performance Tuning Index

Managing stored outlines


In production environments, there is a very simple golden rule about database performance—it's better to have a database that always performs quite well than a database that performs even 10 times faster but not always; that is, a database whose performance sometimes dips.

Execution plan stability is a must for ensuring performance that persists over time; in production environments, we need an optimal and predictable performance.

In this recipe, we will see how to create stored outlines to achieve execution plan stability and how to manage these stored outlines.

Getting ready

To create stored outlines, we need an appropriate grant. Connect to the database as SYSDBA, and grant the user SH permission to create stored outlines:

CONNECT / AS SYSDBA
GRANT CREATE ANY OUTLINE TO sh;

How to do it...

The following steps will demonstrate stored outlines, their creation, and management:

  1. Connect to SH schema:

    CONNECT sh@TESTDB/sh
    
  2. Execute a query on the CUSTOMERS and COUNTRIES tables...

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