Oracle SQL 优化

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Used separately, hints and views are terrific tools for Oracle tuning. But used together, they can cause severe performance problems. Let’s look at what hints, views, and materialized views can do for you. Then, we'll consider when and how to use them.

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Oracle provides several methods for reducing the time spent parsing Oracle SQL statements, which can cause a drag on performance when executing complex queries with a large number of possible execution plans. Let’s briefly examine some of these methods.

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