June 2008
Intermediate to advanced
616 pages
17h 59m
English
Content preview from Troubleshooting Oracle Performance
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PART 4Optimization
Performance is your reality. Forget everything else.
—Harold Geneen1
Only once you have identified the root cause of a performance problem should you try to solve it. As described in Chapter 3, several kinds of problems exist. Regardless of the problem you are facing, the essential goal to achieve is reducing—or, even better, eliminating—the time spent by the most time-consuming operation. Note that a single operation may be composed of many actions that are executed one by one. For example, many fetches are necessary in order to fully process a query returning a lot of data.
Chapter 8 describes how parsing works, how to identify parsing problems, and how to minimize its impact without jeopardizing performance. Chapter 9
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