SQL> @$ORACLE_HOME/rdbms/admin/dbmslm.sql; Package created. Grant succeeded. Synonym created.
SQL> @$ORACLE_HOME/rdbms/admin/dbmslmd.sql; Package created. Synonym created.
2.设置参数UTL_FILE_DIR
添加参数UTL_FILE_DIR,该参数值为服务器中放置数据字典文件的目录，
SQL> CREATE DIRECTORY utlfile AS '/home/oracle/logminer'; Directory created. SQL> alter system set utl_file_dir='/home/oracle/logminer' scope=spfile; System altered.
重启数据库，生效上面的设置。
SQL> shutdown immediate; SQL> startup; SQL> show parameters utl_file_dir;
3.启动补充日志
补充日志不是LogMiner日志分析必须的步骤，但是如果不启用补充日志，分析日志的的很多结果集信息就会显示为“UNKNOWN”，下面是开启最小补充日志。
SQL> ALTER DATABASE ADD SUPPLEMENTAL LOG DATA; Database altered. SQL> SELECT SUPPLEMENTAL_LOG_DATA_MIN FROM V$DATABASE; SUPPLEME -------- YES
4.创建专门的LogMiner用户
不是必须，实为管理安全方便。
5.创建数据字典
SQL> EXECUTE dbms_logmnr_d.build(dictionary_filename => 'dictionary.ora', dictionary_location =>'/home/oracle/logminer');
6.添加需要分析的在线日志或者归档日志
SQL> EXECUTE DBMS_LOGMNR.ADD_LOGFILE(LOGFILENAME =>' /home/oracle/flash_recovery_area/PRIMARY/archivelog/2016_04_25/o1_mf_1_199_ckv04o6w_.arc',OPTIONS => DBMS_LOGMNR.NEW); SQL> EXECUTE DBMS_LOGMNR.ADD_LOGFILE(LOGFILENAME =>' /home/oracle/flash_recovery_area/PRIMARY/archivelog/2016_04_25/o1_mf_1_201_ckv08jyp_.arc',OPTIONS => DBMS_LOGMNR.ADDFILE); PL/SQL procedure successfully completed. SQL> EXECUTE DBMS_LOGMNR.ADD_LOGFILE(LOGFILENAME =>' /home/oracle/flash_recovery_area/PRIMARY/archivelog/2016_04_25/o1_mf_1_200_ckv05pmp_.arc',OPTIONS => DBMS_LOGMNR.ADDFILE); PL/SQL procedure successfully completed.
7. 使用字典分析归档日志文件
SQL> EXECUTE dbms_logmnr.start_logmnr(dictfilename=>'/home/oracle/logminer/dictionary.ora');
8.在线日志分析实例
SQL> insert into nn.t1 values(1000,'succ'); 1 row created. SQL> commit; Commit complete.
SQL> SELECT group#, sequence#, status, first_change#, first_time FROM V$log ORD ER BY first_change#; GROUP# SEQUENCE# STATUS FIRST_CHANGE# FIRST_TIM ---------- ---------- ---------------- ------------- --------- 1 208 INACTIVE 2825768 25-APR-16 2 209 INACTIVE 2825872 25-APR-16 3 210 CURRENT 2845771 25-APR-16
SQL> EXECUTE DBMS_LOGMNR.ADD_LOGFILE(LOGFILENAME =>'/home/oracle/oradata/orcl/redo03.log',OPTIONS => DBMS_LOGMNR.ADDFILE); PL/SQL procedure successfully completed.
SQL> EXECUTE dbms_logmnr.start_logmnr(dictfilename=>'/home/oracle/logminer/dictionary.ora'); PL/SQL procedure successfully completed.
SQL> SELECT sql_redo, sql_undo, seg_owner FROM v$logmnr_contents WHERE seg_name='T1';
SQL_REDO SQL_UNDO SEG_OWNER
insert into "NN"."T1"("TID","TNAME") values ('1000','succ');
delete from "NN"."T1" where "TID" = '1000' and "TNAME" = 'succ' and ROWID = 'AAAR7YAAEAAAACrAAD';
NN9.关闭LogMiner会话
SQL> EXECUTE DBMS_LOGMNR.END_LOGMNR;