[Oracle] Lock 확인

이번 포스팅은 오라클 Lock 확인 후 프로세스 Kill 까지 방법을 설명하였습니다. 

 

-- 락걸린 테이블 확인
SELECT  DO.OBJECT_NAME, DO.OWNER, DO.OBJECT_TYPE, DO.OWNER,
        VO.XIDUSN, VO.SESSION_ID, VO.LOCKED_MODE
FROM    V$LOCKED_OBJECT VO, DBA_OBJECTS DO
WHERE   VO.OBJECT_ID = DO.OBJECT_ID;

Lock 없을때 화면

※해당 테이블에 LOCK 이 걸렸는지.

SELECT A.SID, A.SERIAL#, B.TYPE, C.OBJECT_NAME
FROM V$SESSION A, V$LOCK B, DBA_OBJECTS C
WHERE A.SID = B.SID AND B.ID1 = C.OBJECT_ID
AND B.TYPE='TM' AND C.OBJECT_NAME IN ('TB_CO_GENO');

※ 락발생 사용자와 SQL, OBJECT 조회

SELECT DISTINCT X.SESSION_ID, A.SERIAL#, D.OBJECT_NAME, A.MACHINE, A.TERMINAL,
                A.PROGRAM, B.ADDRESS, B.PIECE, B.SQL_TEXT
FROM V$LOCKED_OBJECT X, V$SESSION A, V$SQLTEXT B, DBA_OBJECTS D
WHERE X.SESSION_ID = A.SID AND
X.OBJECT_ID = D.OBJECT_ID AND A.SQL_ADDRESS = B.ADDRESS
ORDER BY B.ADDRESS, B.PIECE;

※ 현재 접속자의 SQL 분석

SELECT DISTINCT A.SID, A.SERIAL#,
       A.MACHINE, A.TERMINAL, A.PROGRAM,
       B.ADDRESS, B.PIECE, B.SQL_TEXT
FROM  V$SESSION A, V$SQLTEXT B
WHERE A.SQL_ADDRESS = B.ADDRESS
ORDER BY A.SID, A.SERIAL#, B.ADDRESS, B.PIECE

※ 락 세션 죽이기

  SELECT A.SID,   A.SERIAL#
  FROM V$SESSION A,  V$LOCK B,
       DBA_OBJECTS C
 WHERE A.SID = B.SID
   AND B.ID1 = C.OBJECT_ID
   AND B.TYPE = 'TM'
   AND C.OBJECT_NAME = 'TB_CO_GENO'
  
SID SERIAL#
--- -------
5   1
6   1

2. 다음 명령으로 SESSION들을 KILL한다.  ALTER SYSTEM KILL SESSION 'SESSION_ID, SERIAL#';
SQL> alter system kill session '5, 1';
SQL> alter system kill session '6, 1';


※ 락 세션 죽이는 sql 문
SELECT DISTINCT X.SESSION_ID, A.SERIAL#, D.OBJECT_NAME, A.MACHINE, A.TERMINAL,
       A.PROGRAM, A.LOGON_TIME, 'ALTER SYSTEM KILL SESSION'''||A.SID||', '||A.SERIAL#||''';'
FROM GV$LOCKED_OBJECT X, GV$SESSION A, DBA_OBJECTS D
WHERE  X.SESSION_ID = A.SID AND X.OBJECT_ID = D.OBJECT_ID
ORDER BY LOGON_TIME;