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  Oracle Database Tips by Donald Burleson

Profiler sample screen

The ease of use makes this a very good tool when analyzing a trace file.  It is also very helpful when explaining to Developers why it is necessary to work with them on a particular SQL statement or help them to change a coding practice.

Benefits of 10046 Tracing

Collecting and analyzing the data that can be obtained by a 10046 trace provides specific information about the performance of a specific session.  This is often more beneficial than looking at the v$ information since much of that information can be from sessions that are not a key part of the performance problem, or can be from earlier in the users sessions and have no bearing on the current problem.

Limitations of 10046 Tracing

The Multi-Threaded Server (MTS) makes using this process more difficult.  Use of application servers that establish "generic" connections to the database also limit the ease with which this tool can be used. 

Conclusion

This chapter has introduced 10046 Tracing and the benefits that it brings to a tuning effort.  The challenges to collecting and interpreting this information were discussed.  Additionally, some of the resources available for facilitating this were introduced:

  • TKPROF

  • Trace Analyzer

The next section of this book will go into more details on using Wait Event information in practical ways to efficiently tune Oracle databases. 

The above book excerpt is from:

Oracle Wait Event Tuning

High Performance with Wait Event Iinterface Analysis 

ISBN 0-9745993-7-9  

Stephen Andert 

http://www.rampant-books.com/book_2004_2_wait_tuning.htm

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Note: This Oracle documentation was created as a support and Oracle training reference for use by our DBA performance tuning consulting professionals.  Feel free to ask questions on our Oracle forum.

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