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logminer挖掘日志归档查找问题

news 2025/6/29 8:49:22

--根据发生问题时间点查找归档文件

select first_time,NAME from gv$archived_log where first_time>='2016-03-15 17:00:00' and first_time<='2016-03-15 21:00:00';

2016-03-15 17:23:55 +ARCH/jxdb/archivelog/2016_03_15/thread_1_seq_41588.4060.906577337

2016-03-15 17:29:51 +ARCH/jxdb/archivelog/2016_03_15/thread_2_seq_46409.4231.906577337

--加载日志：

exec dbms_logmnr.add_logfile(LogFileName=>'+ARCH/jxdb/archivelog/2016_03_15/thread_1_seq_41588.4060.906577337', Options=>dbms_logmnr.new);

exec dbms_logmnr.add_logfile(LogFileName=>'+ARCH/jxdb/archivelog/2016_03_15/thread_2_seq_46409.4231.906577337',Options=>dbms_logmnr.addfile);

--启动：

exec sys.dbms_logmnr.start_logmnr(options => sys.dbms_logmnr.dict_from_online_catalog);

--检查：

--select count(*) from v$logmnr_contents where operation IN ('DDL') and seg_owner='ADMIN' and TABLE_NAME = 'TAR_STATION';

select count(*) from v$logmnr_contents where TABLE_NAME = 'TAR_STATION';

--创建临时表：

create table log_jyc_TAR_STATION as select OS_USERNAME,MACHINE_NAME,timestamp,commit_timestamp,seg_owner,seg_name,seg_type_name,table_space,row_id,session_info,username,operation,sql_redo,sql_undo

from v$logmnr_contents where TABLE_NAME = 'TAR_STATION';

--结束挖掘：

EXEC SYS.DBMS_LOGMNR.END_LOGMNR;

--检查记录

select * from log_jyc_TAR_STATION;

--删除临时表

drop table log_jyc_TAR_STATION;

--检查监听：

JXDB1:/u01/grid/diag/tnslsnr/JXDB1/listener/trace$

grep "15-MAR-2016 18:4" listener.log > 20160315_1840_2.txt

D:\logminer>grep .exe 监听日志.txt > exe.txt

D:\logminer>grep "PROGRAM=C:" 监听日志.txt > c.txt

查到的session_info为空处理：

1.select supplemental_log_data_min,supplemental_log_data_pk,supplemental_log_data_ui from v$database;

   alter database drop supplemental log data (primary key, unique index) columns;
   alter database add supplemental log data;
....过30分钟
2、将redo日志文件添加到logmnr分析日志列表
   exec sys.dbms_logmnr.add_logfile(logfilename=>'redo日志1', options=>sys.dbms_logmnr.new);
   exec sys.dbms_logmnr.add_logfile(logfilename=>'redo日志2', options=>sys.dbms_logmnr.addfile);
   exec sys.dbms_logmnr.add_logfile(logfilename=>'redo日志n', options=>sys.dbms_logmnr.addfile);
3、启动并分析redo日志
   exec sys.dbms_logmnr.start_logmnr(options => sys.dbms_logmnr.dict_from_online_catalog);
4、查看分析结果
   spool c:\log.txt
   select * from v$logmnr_contents ;
   spool off
5、停止logmnr
   exec sys.dbms_logmnr.end_logmnr
6、取消补充日志
   alter database drop supplemental log data (primary key) columns;
   alter database drop supplemental log data (unique) columns;
   alter database drop supplemental log data;

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