The Next Step
If you use packaged software, it may not be possible for you to tune either your applications or your database schema. And even if you do carry out your own development, it is neither realistic nor necessary to seek perfect performance in tuning your applications and database schema. The 80/20 rule applies here as elsewhere: 80 percent of your tuning effort could well be spent squeezing the last 20 percent of performance from your applications. Emphasize elimination of the major bottlenecks.
Once everything possible has been done to deal with the class of problems described above, we are now ready to proceed to the next stage: monitoring the operating system and database.
After monitoring, you should finally find yourself in a ...
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