The problem of database capability is always the focus concerned by deciders and technician.The most direct and reliable judgement gist to measurement the capability of a system is the response time of the searching time of the database.It thinkes about the searching efficiency of database, analysed part factors which affect the response time of database searching, and studied the optimized methods of Oracle database searching.It also made of a full testing about the study results.%数据库性能问题一直是决策者和技术人员关注的焦点,而衡量一个系统的性能最直接可靠的判断依据就是数据库的查询响应时间.因此,从数据库查询效率的角度,分析了影响Oracle数据库查询响应时间的部分因素.研究了Oracle数据库的查询优化方法,并针对研究结果进行了充分测试.
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