Oracle10g数据库性能调优方法研究

下载后可任意编辑内容摘要：数据库系统的性能最终了决定数据库的可用性和生命力。大多数数据库系统在运行一段时间后都会存在一定的性能问题，主要涉及数据库硬件、数据库服务器、数据库内存、应用程序、操作系统、数据库参数等方面。因此，基于数据库系统的性能调整与优化对于整个系统的正常运行起着至关重要的作用。数据库性能调整与优化涉及到多个层面，通过统一规划、系统分析做出相应的调整，可以提高数据库的稳定性和可用性，保障系统高效地运行，解决系统瓶颈，节约系统开销，具有良好的应用价值，同时也对理论讨论提供了一定的方法指导。基于此，论文将 Oracle 10g 数据库的内存分配、磁盘 I/O 以及 SQL 语句等方面的性能调整与优化问题作为主要讨论内容，对其进行了深化地分析和讨论，给出了一般情况下 Oracle 数据库应用系统的性能调整策略及优化方法。关键词：Oracle 10g 数据库；体系结构；系统全局区；性能调整与优化下载后可任意编辑 AbstractAbstract: The performance of database systems eventually determines their availability and survivability. Most of them will bring about some performance problems more or less after running for a period of time, which mainly involve database hardware, database server, database memory, applications, operating systems and database parameters, etc. Therefore,performance tuning and optimization of database systems,which concern multiple aspects, are very vital to the normal running of the whole system. We can improve the stability and availability of database, guarantee its high running efficiency, solve system bottleneck, reduce system overhead, obtain considerable applicability and in them meanwhile, provide some guidelines for theoretical research through a unified plan and systematical analysis to make appropriate adjustment.Based on the above-mentioned idea, the paper principally pays attention to the research on the performance tuning and optimization problems of memory allocation of Oracle 10g, disc I/O, SQL statements, etc, and...