This paper is to analyze problems frequently met in the process of ORACLE data storage management and find out ways to reduce data fragmentation, row migration and row chaining commonly existed in ORACLE database, by which the availability of ORACLE database is enhanced. 本文主要对ORACLE数据存储管理维护工作中经常遇到的问题进行分析和探讨,找出减少ORACLE数据库普遍存在的数据碎片、数据行迁移和数据行链接方法,提高ORACLE数据库的可用性。