Oracle数据库索引优化方法探析

Exploration on the Index Optimization Method of Oracle Database

Oracle是目前流行的商业数据库软件,广泛应用于ERP、CRM和电子商务等大中型应用系统。笔者通过分析Oracle数据库索引的相关知识原理,针对几种在Oracle生产系统中常见的疑难场景,归纳整理了几种有效的Oracle索引优化方法,包括重新设计索引、避免系统排序和使用函数索引等,并对这些方法进行了逐一定性分析和举例验证。此外,总结了Oracle的SQL语句优化方法,以期为相关人士提供帮助。

Oracle is a popular commercial database software,which is wIdely used in ERP,CRM,e-commerce and other large and medium-sized application systems.By analyzing the related knowledge principle of Oracle database index,aiming at several common difficult scenarios in Oracle production system,the author summarizes several effective Oracle index optimization methods,including redesigning index,avoIding system sorting and using functional index,and makes a certain analysis and example verification of these methods.In addition,this paper summarizes Oracle's SQL sentence optimization methods,in order to provIde help for the relevant people.