September 2003
Intermediate to advanced
416 pages
14h 1m
English
Content preview from Optimizing Oracle PerformanceBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 6. Collecting Extended SQL Trace Data
The process for collecting extended SQL trace data is somewhat of a moving target. For a while, Oracle appeared committed to the excruciatingly inefficient Oracle Trace mechanism. However, the Oracle9i release 2 documentation states flatly that Oracle trace will be deprecated in favor of SQL trace (presumably extended SQL trace) [Oracle (2002)]. Oracle describes the use of SQL trace in its standard documentation, but if you want to use extended SQL trace, you have to work to find the information. This chapter helps to solve that problem for Oracle releases 7 through 9. The architects of the Oracle kernel understand the value of response time data that can be attributed accurately to end-user business actions. Look for Oracle release 10 to contain several features that will simplify your data collection challenges.
Warning
Note that when you generate SQL trace data, you are recording data about your application in an ASCII file. Each SQL trace file contains application SQL text. Many SQL trace files also contain application data. The use of this information is probably subject to strict rules within your company. You must ensure that your use of SQL trace files does not breach confidentiality or leak sensitive data to those who should not see it.
Understanding Your Application
As you learned in Chapter 3, you want to be able to trace exactly the actions motivated by a carefully specified user or batch program for a carefully specified ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.