Oracle LogMiner 安装和使用(9i or later)
设置一个必要参数UTL_FILE_DIR=lt;pathgt;,保证oracle用户在该lt;pathgt;下有读写权限,该参数不支持动态修改,所以只能在p
1. LogMiner安装
需要以SYS用户身份执行下面两个脚本:
$Oracle_HOME/rdbms/admin/dbmslm.sql
$ORACLE_HOME/rdbms/admin/dbmslmd.sql
2. LogMiner使用
设置一个必要参数UTL_FILE_DIR=
创建LogMiner的字典文件,执行下面的脚本。(注意 - 符号不能丢)
EXECUTE DBMS_LOGMNR_D.BUILD('dictionary.ora', -
'
OPTIONS => DBMS_LOGMNR_D.STORE_IN_FLAT_FILE);
向LogMiner中添加需要mine的Log文件,执行下面的脚本。
EXECUTE DBMS_LOGMNR.ADD_LOGFILE( -
LOGFILENAME => '/oradata/redo01.log', -
OPTIONS => dbms_logmnr.NEW);
EXECUTE DBMS_LOGMNR.ADD_LOGFILE( -
LOGFILENAME => '/oradata/redo02.log', -
OPTIONS => dbms_logmnr.ADDFILE);
EXECUTE DBMS_LOGMNR.ADD_LOGFILE( -
LOGFILENAME => '/oradata/redo02.log', -
OPTIONS => dbms_logmnr.REMOVEFILE);
Log文件的挖掘
你可以选择的用来过滤日志信息的选项
选项 意义
=========== =========
STARTSCN SCN起始号
ENDSCN SCN结束号
STARTTIME 开始时间
ENDTIME 结束时间
DICTFILENAME 字典文件的名字
用来分析的LogMiner视图
视图名 视图信息
=================== ==================================================
V$LOGMNR_DICTIONARY 正在使用的字典文件
V$LOGMNR_PARAMETERS LogMiner的参数
V$LOGMNR_LOGS 正在分析的日志文件
V$LOGMNR_CONTENTS 分析出来的日志内容
使用过滤的例子:
EXECUTE DBMS_LOGMNR.START_LOGMNR( -
DICTFILENAME => '
STARTSCN => 100, -
ENDSCN => 150);
查看日志信息的例子:
SELECT operation, sql_redo FROM v$logmnr_contents;

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