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Oracle SQL Tuning with Oracle SQLTXPLAIN

By Stelios Charalambides

  • eBook Price: $31.99
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Oracle SQL Tuning with SQLTXPLAIN is a practical guide to SQL tuning the way Oracle's own experts do it, using a freely downloadable tool called SQLTXPLAIN.

Full Description

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  • ISBN13: 978-1-4302-4809-5
  • 344 Pages
  • User Level: Intermediate to Advanced
  • Publication Date: March 26, 2013
  • Available eBook Formats: EPUB, MOBI, PDF

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Full Description

Oracle SQL Tuning with SQLTXPLAIN is a practical guide to SQL tuning the way Oracle's own experts do it, using a freely downloadable tool called SQLTXPLAIN. Using this simple tool you'll learn how to tune even the most complex SQL, and you'll learn to do it quickly, without the huge learning curve usually associated with tuning as a whole.

Firmly based in real world problems, this book helps you reclaim system resources and avoid the most common bottleneck in overall performance, badly tuned SQL. You'll learn how the optimizer works, how to take advantage of its latest features, and when it's better to turn them off.

  • Quickly tune any SQL statement no matter how complex.
  • Build and tune test cases without affecting production.
  • Use the latest tuning features with confidence.

What you’ll learn

  • How and why complex SQL goes wrong
  • When statistics are crucial and when they are not
  • How and when the tuning facilities of the database can help or hinder
  • When to tune and when not to tune
  • Which steps in an execution plan are crucial to performance
  • How the optimizer works out the execution plan

Who this book is for

Oracle SQL Tuning with SQLTXPLAIN is ideal for everyone who deals with SQL and SQL tuning. Both developers and DBA's will benefit from learning how to use the SQLTXPLAIN tool along with the problem solving approach described in this book.

Table of Contents

Table of Contents

    1. Introduction to SQLTXPLAIN

    2. The Cost-Based Optimizer Environment

    3. How Object Statistics Can Make Your Execution Plan Wrong

    4. How Skewness Can Make Your Execution Times Variable

    5. Troubleshooting Query Transformations

    6. Forcing Execution Plans Through Profiles

    7. Adaptive Cursor Sharing

    8. Dynamic Sampling and Cardinality Feedback

    9. Using SQLTXPLAIN with Data Guard Physical Standby Databases

    10. Comparing Execution Plans

    11. Building Good Test Cases

    12. Using XPLORE to Investigate Unexpected Plan Changes

    13. Trace Files, TRCANLZR, and Modifying SQLT Behavior

    14. Running a Health Check

    15. The Final Word

    16. Appendix A. Installing SQLTXPLAIN

    17. Appendix B. The CBO Parameters (

    18. Appendix C: Tool Configuration Parameters


If you think that you've found an error in this book, please let us know by emailing to editorial@apress.com . You will find any confirmed erratum below, so you can check if your concern has already been addressed.
No errata are currently published


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