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OCP Instructors Guide for Oracle DBA Certification

Chapter 7 - Tuning and Performance

STATSPACK

  • SQL*Plus can be used to both execute the snapshots and create the reports.

Like utlbstat.sql and utlestat.sql, STATSPACK can be found in the ORACLE_HOME/rdbms/admin/ directory on UNIX and in the ORACLE_HOME/rdbms81/admin directory on Windows servers.

V$ TABLES vs. Oracle BSTAT/ESTAT and STATSPACK

Remember that many V$ tables are cumulative in nature. They track information since the database has been started. The information collected by BSTAT/ESTAT and STATSPACK are "snapshots" of information captured during the tool’s execution. If you are interested in seeing how the database is performing during a specific time-period, don’t use the V$ tables since they are cumulative. Pick the time period that you want to run statistics and run STATSPACK instead.
 


The above text is an excerpt from:


OCP Instructors Guide for Oracle DBA Certification
A Study Guide to Advanced Oracle Certified Professional Database
Administration Techniques

ISBN 0-9744355-3-8

by Christopher T. Foot
 

http://www.rampant-books.com/book_2003_2_OCP_print.htm


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