January 2012
Intermediate to advanced
542 pages
11h 28m
English
Content preview from Oracle Database 11gR2 Performance Tuning CookbookBecome 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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Tracing SQL activity with SQL Trace and TKPROF
In this recipe, we will see how to use SQL Trace and TKPROF to trace SQL statements in a session.
There could be situations when we have to diagnose and tune a database, on which an application is running for which we don't have the source code, so we don't know which SQL statements are executed. In these situations, or when we want to investigate deeper than the AUTOTRACE feature we have used until now, the use of these tools is invaluable.
Getting ready
To trace SQL in our session, we have to make some modifications to the database parameters (if not set according to our needs).
The first parameter to set is TIMED_STATISTICS=TRUE, it can be set at the system or session level, to allow the database to ...
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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.