logminer、alter dump、archived_log...

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-- logminer 使用 online dict and continuous mine

execute sys.DBMS_LOGMNR.START_LOGMNR(STARTSCN =>648270993 , ENDSCN =>648270993, OPTIONS =>dbms_logmnr.dict_from_online_catalog+sys.DBMS_LOGMNR.CONTINUOUS_MINE);


--V$LOGMNR_DICTIONARY-------查询使用的数据字典文件
select filename from v$logmnr_dictionary; 

--V$LOGMNR_PARAMETERS-------查询当前LogMiner设定的参数
select * from v$logmnr_parameters;   

--V$LOGMNR_LOGS-------查询分析的日志文件
select filename from v$logmnr_logs;  

CREATE TABLE  tzm.ttt18 AS  select ROW_ID, SCN, XIDUSN,XIDSLT,XIDSQN, XID, TABLE_NAME,

SEG_OWNER, OPERATION_CODE, CSF, SQL_REDO from v$logmnr_contents 

 

 

-- logminer 指定 dict

alter system set utl_file_dir='/home/oracle/logminer' scope=spfile; 

shutdown immediate

startup

show parameter utl_file_dir 

execute sys.DBMS_LOGMNR.START_LOGMNR(dictfilename=>'/home/oracle/logminer/dictionary.ora',STARTSCN => 624342312, ENDSCN =>624342384, OPTIONS =>sys.DBMS_LOGMNR.CONTINUOUS_MINE);

 

  /*

   * redologfile，sequence，scn关系

   */

SELECT * FROM (

   select 'onlinelog',l.GROUP#,sequence#,FIRST_CHANGE# as startscn ,NEXT_CHANGE# as endscn,l.STATUS,l.bytes fsize,

  to_char(FIRST_TIME,'yyyy/mm/dd:hh24:mi:ss') firsttime,

  to_char(NEXT_TIME,'yyyy/mm/dd:hh24:mi:ss') nexttime,MEMBER

  from V$log l, v$logfile lf WHERE l.GROUP#=lf.GROUP#  

  UNION ALL

   select  'archivelog',recid,SEQUENCE#,FIRST_CHANGE# as startscn ,NEXT_CHANGE# AS endscn,STATUS,BLOCKS*BLOCK_SIZE AS fsize ,

  to_char(FIRST_TIME,'yyyy/mm/dd:hh24:mi:ss') firsttime,

  to_char(NEXT_TIME,'yyyy/mm/dd:hh24:mi:ss') nexttime, name

  from v$archived_log WHERE name IS NOT NULL

) WHERE STARTscn  <= 622116275 AND 622116275 <= endscn

 -- show session and sql

SELECT s.SID, s.SERIAL#, s.USERNAME, s.STATUS,s.OSUSER, s.SCHEMANAME 
, s.LOGON_TIME
, s.machine
, s.program
, s.seq#
, s.event
, sq.SQL_TEXT 
FROM V$SESSION s LEFT OUTER JOIN V$SQL sq ON sq.SQL_ID=s.SQL_ID 
WHERE s.TYPE='USER'
ORDER BY 3,4,8,9,7

 

-- query object name by objectid

select object_name,OBJECT_ID, data_object_id, dba_objects.* from dba_objects where object_id in (5644153);

 

-- archiveed log size

 

SELECT logtime,thread#,sum(logsize)/1024/1024/1024||'GB',count(name)
FROM (
	SELECT thread#,
	TRUNC(first_time, 'dd') AS logtime,
	a.blocks*a.block_size AS logsize,
	name
	FROM v$archived_log a
	WHERE a.STATUS = 'A'
	AND a.dest_id = 1) li
GROUP BY  logtime, thread#
ORDER BY logtime DESC, thread#

 -- alter dump redolog

oradebug setmypid;
alter  system  dump logfile '/opt/oracle/archivelog/archive_1_5_989852304.log'  scn min 648270877 scn max  648270878;
oradebug tracefile_name; 

 

 -- redolog 

select lf.TYPE, l.GROUP#,sequence#,FIRST_CHANGE# as startscn ,NEXT_CHANGE# as endscn,l.STATUS,l.bytes fsize,
to_char(FIRST_TIME,'yyyy/mm/dd:hh24:mi:ss') firsttime,
to_char(NEXT_TIME,'yyyy/mm/dd:hh24:mi:ss') nexttime,MEMBER
from V$log l, v$logfile lf WHERE l.GROUP#=lf.GROUP#  

ALTER DATABASE ADD logfile GROUP 12 '/opt/oracle/oradata/orcl/redo12.log' SIZE 5120m ;
ALTER DATABASE ADD logfile GROUP 13 '/opt/oracle/oradata/orcl/redo13.log' SIZE 5120m ;
ALTER DATABASE ADD logfile GROUP 14 '/opt/oracle/oradata/orcl/redo14.log' SIZE 5120m ;
ALTER DATABASE ADD logfile GROUP 15 '/opt/oracle/oradata/orcl/redo15.log' SIZE 5120m ;
ALTER DATABASE ADD logfile GROUP 16 '/opt/oracle/oradata/orcl/redo16.log' SIZE 5120m ;
ALTER DATABASE ADD logfile GROUP 17 '/opt/oracle/oradata/orcl/redo17.log' SIZE 5120m ;
ALTER DATABASE ADD logfile GROUP 18 '/opt/oracle/oradata/orcl/redo18.log' SIZE 5120m ;
ALTER DATABASE ADD logfile GROUP 19 '/opt/oracle/oradata/orcl/redo19.log' SIZE 5120m ;
 ALTER DATABASE ADD logfile GROUP 20 '/opt/oracle/oradata/orcl/redo20.log' SIZE 5120m ;

ALTER database DROP logfile group 8;
ALTER database DROP logfile group 9;
ALTER database DROP logfile group 10;
ALTER database DROP logfile group 11;

ALTER system switch logfile ;
alter system checkpoint;

alter system archive log SEQUENCE 4979;