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Home > Computing and Information Technology > Databases > Database software > Oracle Wait Event Tuning: High Performance with Wait Event Interface Analysis(Oracle in Focus S.)
Oracle Wait Event Tuning: High Performance with Wait Event Interface Analysis(Oracle in Focus S.)

Oracle Wait Event Tuning: High Performance with Wait Event Interface Analysis(Oracle in Focus S.)


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About the Book

This handbook provides database administrators with clear and concise processes with which to attack tuning problems using Oracle Wait Interface. A guide is provided to demonstrate the mechanics of the Wait Interface and how to use it not only to tune database performance at the database level but also to give the statistics needed to understand problems that lie outside of the database in the SAN or the network. Techniques that apply to tuning any Oracle database from version 7 through 9i and beyond are included.

Table of Contents:
Section I - Overview CHAPTER 1. Introduction to Database Tuning Approaches Why Tune? Ratios historical introduction Wait Interface a new approach to system level tuning 10046 Tracing a new approach to session level tuning Gathering real-time system waits events: STATSPACK CHAPTER 2. Wait Interface An Elapsed-Time Based System Measurement like Minutes Benefits Limitations CHAPTER 3. 10046 Tracing - A Speed Based Session Measurement Like MPH Benefits Limitations Section II Methodology CHAPTER 4. The Importance of Holistic Oracle Tuning Proactive STATSPACK tuning Ratio-based tuning Tuning disk I/O Tuning SQL Network tuning CHAPTER 5. Using the Oracle Wait Interface Defining the wait interface environment Using the wait interface Step-by-step examples and case studies CHAPTER 6. Using 10046 Tracing Setting-up for 10046 tracing Collecting the trace files Interpreting a 10046 trace Using third-party tools (hotsos) Step-by-step examples and case studies CHAPTER 7. Using Statspack Setting-up Statspack Gathering statistics (frequency, history) Using spreport Using manual script analysis Step-by-step examples and case studies CHAPTER 8. New 10g wait event tuning. The 10046 wait interface becomes obsolete * v$session_wait The current waits in all sessions * v$session_wait_history The last ten waits encountered * v$active_session_history - This is populated every second for the past 30 minutes * v$waitclassmetric_history * v$system_wait_class * v$event_histogram * v$eventmetric WRH wait event tables * wrh$_event_name * wrh$_system_event * wrh$_system_event_bl * wrh$_bg_event_summary * wrh$_waitclassmetric_history This is populated with wait alerts * wrh$active_session_history Oracle10g DBA views for historical wait events. * dba_hist_waitclassmet_history wait alerts * dba_hist_system_event Populated from wrh$_system_event_bl and wrh$_system_event * dba_hist_bg_event_summary

About the Author :
Stephen Andert is a database administrator for First Health Group Corporation. He has written articles on SQL*Loader tuning and has presented at local and international Oracle user group events. He is an Oracle8 and Oracle8i Oracle Certified Professional and is currently serves on the board of AZORA, the Arizona Oracle user group. He lives in Chandler, Arizona.


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Product Details
  • ISBN-13: 9780974599373
  • Publisher: Rampant Techpress
  • Publisher Imprint: Rampant Techpress
  • Height: 230 mm
  • Returnable: N
  • Spine Width: 9 mm
  • Width: 185 mm
  • ISBN-10: 0974599379
  • Publisher Date: 01 Oct 2004
  • Binding: Paperback
  • Language: English
  • Series Title: Oracle in Focus S.
  • Sub Title: High Performance with Wait Event Interface Analysis


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