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OCP Instructors Guide for Oracle DBA Certification

Chapter 7 - Tuning and Performance

Conclusion

  • Read Don Burleson’s book on the STATSPACK utility. Read it, study it and you will become a STATSPACK expert.
     

  • Identify the scope of the performance problem before you attempt to tune it. 
     

  • Keep an open mind.  Do not let tunnel vision prevent you from evaluating all of the possible reasons for the poor performance.
     

  • Start by monitoring the database at a high level and then continue to narrow the scope of your monitoring until you pinpoint the problem.
     

  • Be careful with the analyze utility.  Analyzing tables will most likely change query access paths.
     

  • Don't use hints unless it is absolutely necessary. You are altering SQL to influence the optimizer. This may have a negative impact when the data, application or database release changes.

Now that we have covered the basics of backup and recovery and tuning and performance, let’s move on to something new.  Instead of focusing on a single topic, the next chapter contains information, hints, tips, tricks and techniques that are not related to any specific Oracle discipline.
 


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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