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Expert Oracle RAC Performance Diagnostics and Tuning by Murali Vallath

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CHAPTER 6

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Tools and Utilities

Performance tuning is a very wide subject; it can be approached artistically like someone trying to write music or paint a picture, which involves many discarded versions of the canvas or notes and bars by making changes to the system in an effort to improve the look or sound by trial and error. While ideally a more scientific approach to performance optimization is preferred, performance engineers start out with intuition before using scientific data. The performance engineer or DBA collects data or statistics from the following places:

  • From areas of the application that are performing slowly
  • During various times ...

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