基于数据块的关系数据库日志挖掘技术  

Relational Database Redo Log Mining Technology Based on Data Block

作　　者：彭巍[1] 邵佳炜[1] 雷振江[2] 吕旭明[2] 聂庆节[3] 刘赛[3] 

机构地区：[1]国网上海市电力公司,上海200122 [2]国网辽宁省电力有限公司,沈阳110004 [3]国网电力科学研究院,南京210003

出　　处：《计算机系统应用》2016年第7期219-224,共6页Computer Systems & Applications

基　　金：国家电网公司总部科技项目

摘　　要：在关系型数据库中数据库通过Redo日志来实现事物的快速提交,并记录事物的操作过程与操作内容.通过对Redo日志的分析与变化数据内容的捕获,将变化数据传送到灾备端,并在灾备端实现变化数据的写入,是目前数据库复制最主要实现原理.本文分析了oralce数据库Redo日志文件结构,阐述了日志文件头标志位信息.结合Redo日志文件头定位分析技术,给出了一种基于数据块的数据库Redo日志挖掘算法.通过测试分析,验证了该Redo日志挖掘技术的可行性与可靠性.最后展望了下一步的研究方向.The relational database can submit objects rapidly by means of the Redo log and also can record the operation process and the operation content. The most important method to realize database replication is transmitting and writing changed data in the disaster backup end through the analysis of the Redo log and the capturing of the changed data contents. The structure of Oracle Redo log file database is analyzed in this paper, and the header information of the log file is also stated. Considering the technology of Redo log file head positioning, the paper presents a Redo log database mining algorithm based on data block. The paper also validates the feasibility and reliability of the technology of the Redo log mining through the comparative analysis. Research direction is discussed at last.

关 键 词：Redo日志 日志分析 日志定位 日志挖掘 数据库复制 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]