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Optimizing Oracle Performance By Cary V. Millsap

Optimizing Oracle Performance
by Cary V. Millsap

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This text dispenses with database-centric metrics and instead shows how to use Oracle's response time statistics to diagnose performance problems in an Oracle application system.
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Optimizing Oracle Performance Summary


Optimizing Oracle Performance by Cary V. Millsap

This text dispenses with database-centric metrics and instead shows how to use Oracle's response time statistics to diagnose performance problems in an Oracle application system. Former VP of Oracle's System Performance Group, Cary Millsap, clearly shows how eliminating requests for unneeded work improves performance dramatically. He also shows how the mathematical discipline of queueing theory can be combined with response time metrics to accurately predict the impact of system changes and upgrades. This text clearly and concisely explains how to use Oracle's response time statistics to diagnose and repair performance problems. It also shows how "queueing theory" can be applied to response time statistics to predict the impact of upgrades and other system changes. The book aims to eliminate the time-consuming, trial-and-error guesswork inherent in most conventional approaches to tuning. You can determine exactly where a system's performance problem is, and with equal importance,where it is not, in just a few minutes - even if the problem is several years old. It also intends to cut a path through the complexity of current tuning methods, and streamline an approach that focuses on optimization techniques that any DBA can use quickly and successfully to make noticeable - even dramatic - improvements. For example, the one thing database users care most about is response time. Naturally, DBAs focus much of their time and effort towards improving response time. But it is entirely too easy to spend hundreds of hours to improve important system metrics such as hit ratios, average latencies, and wait times, only to find users are unable to perceive the difference. And an expensive hardware upgrade may not help either.

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About Cary V. Millsap


Cary Millsap is the former Vice President of Oracle's System Performance Group and the cofounder of Hotsos (http://www.hotsos.com), a company dedicated to Oracle system performance. Hotsos provides performance-improvement tools for Oracle environments and also delivers training in the form of clinics and symposiums. Cary is also a founding member of the Oak Table Network (http://www.oaktable.net), an informal association of "Oracle Scientists" well known throughout the Oracle community. Jeff Holt is one of the world's most productive Oracle performance optimization specialists. He has tremendous experience in constructing training programs and software tools to optimize the system performance management process. He is a former support analyst and consultant at Oracle Corporation, where he served as a technology leader in the System Performance Group. He is the Hotsos Tools lead designer and developer, the author of several technical papers, a Hotsos founding employee, and a Hotsos Clinic principal developer.

Table of Contents


Part I. Method 1. A Better Way to Optimize "You're Doing It Wrong" Requirements of a Good Method Three Impor tant Advances Tools for Analyzing Response Time Method R 2. Targeting the Right User Actions Specification Reliability Making a Good Specification Specification Over-Constraint 3. Targeting the Right Diagnostic Data Expectations About Data Collection Data Scope Oracle Diagnostic Data Sources For More Information 4. Targeting the Right Improvement Activity A New Standard of Customer Care How to Find the Economically Optimal Performance Improvement Activity Making Sense of Your Diagnostic Data Forecasting Project Net Payoff Part II. Reference 5. Interpreting Extended SQL Trace Data Trace File Walk-Through Extended SQL Trace Data Reference Response Time Accounting Evolution of the Res ponse Time Model Walking the Clock Forward Attribution Detailed Trace File Walk-Through Exercises 6. Collecting Extended SQL Trace Data Understanding Your Application Activating Extended SQL Trace Finding Your Trace File(s) Eliminating Collection Error Exercises 7. Oracle Kernel Timings Operating System Process Management Oracle Kernel Timings How Software Measures Itself Unaccounted-for Time Measurement Intrusion Effect CPU Consumption Double- Counting Quantization Error Time Spent Not Executing Un-Instrumented Oracle Kernel Code Exercises 8. Oracle Fixed View Data Deficiencies of Fixed View Data Fixed View Reference Useful Fixed View Queries The Oracle "Wait Interface" Exercises 9. Queueing Theory for the Oracle Practitioner Performance Models Queueing Queueing Theory The M/M/m Queueing Model Perspective Exercises Part III. Deployment10. Working the Resource Profile How to Work a Resource Profile How to Forecast Improvement How to Tell When Your Work Is Done 11. Responding to the Diagnosis Beyond the Resource Profile Response Time Components Eliminating Wasteful Work Attributes of a Scalable Application 12. Case Studies Case 1: Misled by System-Wide Data Case 2: Large CPU Service Duration Case 3 : Large SQL*Net Event Duration Case 4: Large Read Event Duration Conclusion Part IV. Appendixes A. Glossary B. Greek Alphabet C. Optimizing Your Database Buffer Cache Hit Ratio D. M/M/m Queueing Theory Formulas E. References.

Additional information

GOR001866420
Optimizing Oracle Performance by Cary V. Millsap
Cary V. Millsap
Used - Very Good
Paperback
O'Reilly Media, Inc, USA
2003-09-26
390
059600527X
9780596005276
N/A
Book picture is for illustrative purposes only, actual binding, cover or edition may vary.
This is a used book - there is no escaping the fact it has been read by someone else and it will show signs of wear and previous use. Overall we expect it to be in very good condition, but if you are not entirely satisfied please get in touch with us.