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文章 2013-06-08 来自：开发者社区

SQL Tuning Advisor(STA) 到底做了什么?

SQL Tuing Advisor(STA) 是Automatic Tuning Optimizer(自动优化调整器)的一部分。在前面的文章使用SQL tuning advisor(STA)自动优化SQL中描述了SQL Tuing Advisor(STA)的相关背景并给出示例。本文主要是描述STA底层到底为我们作了什么使得SQL语句得以...

文章 2013-05-30 来自：开发者社区

使用SQL tuning advisor(STA)自动优化SQL

Oracle 10g之后的优化器支持两种模式，一个是normal模式，一个是tuning模式。在大多数情况下，优化器处于normal模式。基于CBO的normal模式只考虑很小部分的执行计划集合用于选择哪个执行计划，因为它需要在尽可能短的时间，通常是几秒或毫秒级来对当前的SQL语句进行解析并生成执行计划。因此并不能保证SQL语句每次都是...

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云数据库 RDS SQL Server 版

云数据库SQL Server，具有企业许可授权，权限更为开放，引擎功能更为强大。能完美支持Windows平台的.NET架构，支持复杂SQL查询，性能优秀，并有强大的可视化管理工具，帮助您轻松管理数据。

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