Oracle Database Performance Tuning Guide, 10g Release 2 (10.2).pdf
第十三章:The Query Optimizer
This chapter discusses SQL processing, optimization methods, and how the optimizer chooses a specific plan to execute SQL.
The chapter contains the following sections:
- Optimizer Operations
- Choosing an Optimizer Goal
- Enabling and Controlling Query Optimizer Features
- Understanding the Query Optimizer
- Understanding Access Paths for the Query Optimizer
- Understanding Joins
本章主要讨论SQL的处理,优化方法和优化器如何为SQL选择一个特殊的执行计划,主要包括以下几个部分:
- 优化器的操作
- 选择优化器的目标
- 启用和控制查询优化器的特性
- 理解查询优化器r
- 理解查询优化器的访问路径
- 理解连接