June 2008
Intermediate to advanced
616 pages
17h 59m
English
Content preview from Troubleshooting Oracle Performance
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PART 3Query Optimizer
Make the best use of what is in your power, and take the rest as it happens.
Epictetus1
Every single SQL statement sent to the database before being processed by the SQL engine must be turned into an execution plan. In fact, an application specifies only what data must be processed through SQL statements, not how to process it. The aim of the query optimizer is not only to deliver the SQL engine execution plans describing how to process data but also, and most important, to deliver efficient execution plans. Failing to do so may lead to abysmal performance. Precisely for this reason, a book about database performance must deal with the query optimizer.
The aim of this part, however, is not to cover the internal workings ...
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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.
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