Oracle SQL Tuning with Oracle SQLTXPLAIN

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Beschreibung

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 reliablemethod that is repeatable
Shows the very latest tuning features in Oracle Database 12c
Enables the building of test cases without affecting production
What You'll 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

Who This Book Is For

Anyone who deals with SQL and SQL tuning. Both developers and DBAs will benefit from learning how to use the SQLTXPLAIN tool, and from the problem solving methodology in this book.

Who This Book Is For

Anyone who deals with SQL and SQL tuning. Both developers and DBAs will benefit from learning how to use the SQLTXPLAIN tool, and from the problem solving methodology in this book.

Über den Autor

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

Zusammenfassung

Oracle SQL Tuning with Oracle SQLTXPLAIN: Oracle Database 12c Edition helps DBAs and developers work faster and more accurately, allowing complex projects to be completed within today's tighter budgets and timescales. In the past both developers and DBAs have used trial and error to solve performance problems, a slow and error-prone process which can look like groping around in the dark. Learning SQLTXPLAIN and the method in this book will turn every DBA and SQL developer into a superhero, able to solve complicated tuning problems faster than ever before, and give them the potential to save projects from expensive performance disasters. New chapters on AWR and statistics will help DBAs also avoid problems before they even begin.

Inhaltsverzeichnis

1. Introduction.- 2. AWR: Your Guide on What to do Next.- 3. The Cost-Based Optimizer Environment.- 4. How Object Statistics Can Make Your Execution Plan Wrong.- 5. How Skewness Can Make Your Execution Times Variable.- 6. Collecting Good Oracle 12c Statistics.- 7. Tracing CBO Decisions, Hints and Query Transformations using 10053.- 8. Forcing Execution Plans Through Profiles.- 9. Adaptive Cursor Sharing.- 10. How To Work with Adaptive Plans.- 11. Dynamic Statistics.- 12. Directives and Statistics Feedback.- 13. Parallel Execution.- 14. SQL Monitor Active Reports.- 15. Using SQLTXPLAIN with an Active Data Environment.- 16. Building Good Test Cases.- 17. Using XPLORE to Investigate Unexpected Plan Changes.- 18. Trace Files, TRCANLZR and Modifying SQLT Behavior.- 19. Comparing Execution Plans.- 20. Running a Health Check.- 21. The Final Word.- 22. Appendix A. Installing SQLTXPLAIN.- 23. Appendix B. The CBO Parameters (11.2.0.1).- 24. Appendix C. Tool Configuration Parameters and the Express Methods.

Details

Erscheinungsjahr:	2017
Genre:	Informatik
Rubrik:	Naturwissenschaften & Technik
Medium:	Taschenbuch
Inhalt:	xxiii 408 S. 4 s/w Illustr. 203 farbige Illustr. 408 p. 207 illus. 203 illus. in color.
ISBN-13:	9781484224359
ISBN-10:	1484224353
Sprache:	Englisch
Herstellernummer:	978-1-4842-2435-9
Ausstattung / Beilage:	Paperback
Einband:	Kartoniert / Broschiert
Autor:	Charalambides, Stelios
Auflage:	2nd ed.
Hersteller:	Apress Apress L.P.
Maße:	254 x 178 x 24 mm
Von/Mit:	Stelios Charalambides
Erscheinungsdatum:	06.04.2017
Gewicht:	0,815 kg

Artikel-ID: 108900635

Über den Autor

Zusammenfassung

Inhaltsverzeichnis

Details

Erscheinungsjahr:	2017
Genre:	Informatik
Rubrik:	Naturwissenschaften & Technik
Medium:	Taschenbuch
Inhalt:	xxiii 408 S. 4 s/w Illustr. 203 farbige Illustr. 408 p. 207 illus. 203 illus. in color.
ISBN-13:	9781484224359
ISBN-10:	1484224353
Sprache:	Englisch
Herstellernummer:	978-1-4842-2435-9
Ausstattung / Beilage:	Paperback
Einband:	Kartoniert / Broschiert
Autor:	Charalambides, Stelios
Auflage:	2nd ed.
Hersteller:	Apress Apress L.P.
Maße:	254 x 178 x 24 mm
Von/Mit:	Stelios Charalambides
Erscheinungsdatum:	06.04.2017
Gewicht:	0,815 kg