Logminer简单用法

来源：互联网发布：windows server 2003 编辑：程序博客网时间：2024/06/05 00:15

Logminer简单用法

1. 安装Logminer

SQL>@?/rdbms/admin/dbmslm.sqlSQL>@?/rdbms/admin/dbmslmd.sqlSQL>@?/rdbms/admin/dbmslms.sql

2. 创建数据字典

SQL> alter system set utl_file_dir='/oradata/lgmnr' scope=spfile;--restart the instance-- Create a dictionary file --   (init.ora parameter utl_file_dir must be set)exec dbms_logmnr_d.build('mydictfile', '/oradata/lgmnr');

3. 添加日志

-- Register log files, can be from a different db--   (NEWFILE=start new list/ ADDFILE=add next file)exec dbms_logmnr.add_logfile('/arch/1_141_810359695.dbf', dbms_logmnr.new); exec dbms_logmnr.add_logfile('/arch/1_142_810359695.dbf', dbms_logmnr.addfile); exec dbms_logmnr.add_logfile('/arch/1_143_810359695.dbf', dbms_logmnr.addfile);

4. 使用字典分析日志

-- Start the logminer sessionexec dbms_logmnr.start_logmnr(DictFileName => '/oradata/lgmnr/mydictfile');

5. 查看日志

-- Query v_$logmnr_contents view to extract required infoselect timestamp, sql_undofrom   sys.v_$logmnr_contentswhere  seg_name = 'T';select operation,sql_redo,sql_undo from v$logmnr_contents where seg_owner='BBED' and seg_name='T' and rownum<=10;

6. 结束日志挖掘

-- Query v_$logmnr_contents view to extract required infoselect timestamp, sql_undofrom   sys.v_$logmnr_contentswhere  seg_name = 'T';select operation,sql_redo,sql_undo from v$logmnr_contents where seg_owner='BBED' and seg_name='T' and rownum<=10;