alter session set nls_date_format='yyyy-mm-dd hh24:mi:ss';

select sysdate from dual;

执行增删操作

alter system switch logfile;     切换当前的重做日志已以生成归档日志（相当于将之后的操作重新放到另一个日志中）

alter session set nls_date_format='yyyy-mm-dd hh24:mi:ss';　　　　　　修改格式方便查看

select sequence#,first_time from v$log_history order by first-time desc;

归档日志默认放在/u01/app/oracle/flash_recovery_area/ORCL/archivelog

查看分析日志

select t.FIRST_TIME,t.NAME from v$archived_log t order by t.FIRST_TIME desc;

 

使用logminer分析数据

conn /as sysdba

execute dbma_logmnr.add_logfile(logfilename=>'/u01/app/oracle/flash_recovery_area/ORCL/archivelog/2011-05_04/01_mf_1_12_6w0mmgmd_.arc',options=>dbms_logmnr.new);

启动logminer 

execute dbms_logmnr.start_logmnr (options=>dbms_logmnr.dict_from_online_catalog);

把分析数据放入表中，并把表的权限授权给普通用户

create table logminer_20110504 tablespace BANK_TBS as select * from v$logmnr_contents;

grant select on logminer_20110504 to bankuser;

结束logminer分析

execute dbms_logmnr.end_logmnr;

查看分析日志结果

select t.timestamp,t.sql_redo,t.sql_undo from sys.logminer_20110504 t where t.seg_owner='BANKUSER' and t.sql_undo is not null;