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Oracle SQL Tuning with Oracle SQLTXPLAIN de Stelios Charalambides

Oracle SQL Tuning with Oracle SQLTXPLAIN

Autor Stelios Charalambides
en Limba Engleză Paperback – 21 mar 2013
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.
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Specificații

ISBN-13: 9781430248095
ISBN-10: 1430248092
Pagini: 344
Dimensiuni: 178 x 254 x 18 mm
Greutate: 0.59 kg
Ediția:1st ed.
Editura: Apress
Colecția Apress
Locul publicării:Berkeley, CA, United States

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Cuprins

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 (11.2.0.1)
18. Appendix C: Tool Configuration Parameters

Notă biografică

Stelios Charalambides has more than 20 years experience working with Oracle databases. He is OCP certified and has worked as a senior Consultant DBA on both sides of the Atlantic, dealing with all aspects of system design, implementation, and post production support, solving practical problems in a wide variety of environments. He now works as an Oracle Support Engineer developing time critical solutions for tier one customers with high profile performance problems.

Caracteristici

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.

Textul de pe ultima copertă

Learn through this practical guide to SQL tuning how Oracle's own experts do it, using a freely downloadable tool called SQLTXPLAIN. This new edition has been expanded to include AWR, Oracle 12c Statistics, interpretation of SQL Monitor reports, Parallel execution, and Exadata-related features. Reading this book and using SQL helps you learn 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. Best of all, the book is updated to cover the very latest feature set in Oracle Database 12c.
  • Covers AWR report integration
  • Helps with SQL Monitor Report Interpretation
  • Provides a reliable methodthat is repeatable
  • Shows the very latest tuning features in Oracle Database 12c
  • Enables the building of test cases without affecting production
    • What You Will Learn:
    • Identify how and why complex SQL has gone wrong
    • Correctly interpret AWR reports generated via SQLTXPLAIN
    • Collect the best statistics for your environment
    • Know when to invoke built-in tuning facilities
    • Recognize when tuning is not the solution
    • Spot the steps in a SQL statement's execution plan that are critical to performance of that statement
    • Modify your SQL to solve performance problems and increase the speed and throughput of production database systems