CREATE OR REPLACE PROCEDURE SOLVE_LOCKASV_SQL VARCHAR2(3000); --定义 v_sql 接受抓取锁的sql语句V_SQL02 VARCHAR2(3000);V_SQL03 VARCHAR2(3000);KILL_SID NUMBER;KILL_SERIAL NUMBER;CUR_LOCK SYS_REFCURSOR; --定义游标变量，循环执行抓取锁的sql语句CUR_LOCK02 SYS_REFCURSOR; TYPE TP_LOCK IS RECORD( --定义 record类型的 变量V_SID NUMBER,V_TYPE VARCHAR2(10),V_ID1 NUMBER,V_ID2 NUMBER,V_LMODE VARCHAR2(200),V_REQUEST VARCHAR2(200),V_LOCK_TIME NUMBER,V_BLOCK NUMBER );RECORDS_LOCK TP_LOCK;TYPE TP_LOCK02 IS RECORD(WAITING_SID NUMBER,WAITING_SQL VARCHAR2(1000),BLOCKER_EVENT VARCHAR2(1000),BLOCKING_SID NUMBER,BLOCKING_SQL VARCHAR2(1000));RECORDS_LOCK02 TP_LOCK02;V_BLOCKING_SID NUMBER;V_WAITING_SID NUMBER;BEGIN DBMS_OUTPUT.PUT_LINE('------------------查找数据库中是否有锁阻塞、锁等待的情况------------------');V_SQL:='SELECT SID,TYPE,ID1,ID2,DECODE(LMODE,0, ''NONE'',1,''NULL'', 2, ''ROW SHARE'' ,3, ''ROW EXCLUSIVE'' ,4, ''SHARE'' ,5, ''SHARE ROW EXCLUSIVE'' ,6 ,''EXCLUSIVE'' ,''HAHA'') LOCK_TYPE,DECODE(REQUEST,0, ''NONE'',1,''NULL'', 2, ''ROW SHARE'' ,3, ''ROW EXCLUSIVE'' ,4, ''SHARE'' ,5, ''SHARE ROW EXCLUSIVE'' ,6 ,''EXCLUSIVE'' ,''HAHA'') LOCK_REQUEST,CTIME,BLOCK FROM V$LOCK WHERE TYPE IN (''TM'',''TX'')' ;OPEN CUR_LOCK FOR V_SQL;LOOPFETCH CUR_LOCK INTO RECORDS_LOCK;EXIT WHEN CUR_LOCK%NOTFOUND;IF RECORDS_LOCK.V_REQUEST <> 'NONE' THEN --抓取发出请求锁的会话DBMS_OUTPUT.PUT_LINE('waiting sid: '||RECORDS_LOCK.V_SID||' is request a lock ,lock_mode is '||RECORDS_LOCK.V_REQUEST||' and being locked '|| RECORDS_LOCK.V_LOCK_TIME||'s');V_WAITING_SID:=RECORDS_LOCK.V_SID;END IF;IF RECORDS_LOCK.V_BLOCK <> 0 THEN --抓取发生锁阻塞的会话DBMS_OUTPUT.put_line('blocking sid: '||RECORDS_LOCK.V_SID||' is make a lock , lock_mode is '||RECORDS_LOCK.V_LMODE);V_BLOCKING_SID:=RECORDS_LOCK.V_SID;END IF;END LOOP;CLOSE CUR_LOCK; DBMS_OUTPUT.PUT_LINE('------------------查找产生锁的会话、锁等待的会话------------------------');V_SQL02:='SELECT DISTINCT WAITER.SID "WAITING_SID",W_SQL.SQL_TEXT "SQL FROM WAITING SESSION",BLOCKER.EVENT "BLOCKER EVENT",BLOCKER.SID "BLOCKING SID",B_SQL.SQL_TEXT "SQL FROM BLOCKING SESSION"FROM V$SESSION WAITER,V$SESSION BLOCKER,V$SQL W_SQL,V$SQL B_SQL WHERE WAITER.EVENT=''enq: TX - row lock contention'' AND WAITER.BLOCKING_SESSION=BLOCKER.SIDAND W_SQL.SQL_ID=WAITER.SQL_IDAND B_SQL.SQL_ID =NVL(BLOCKER.SQL_ID,BLOCKER.PREV_SQL_ID)'; OPEN CUR_LOCK02 FOR V_SQL02;LOOP FETCH CUR_LOCK02 INTO RECORDS_LOCK02;EXIT WHEN CUR_LOCK02%NOTFOUND;IF RECORDS_LOCK02.WAITING_SID IS NOT NULL THENDBMS_OUTPUT.put_line('waiting sid: '||RECORDS_LOCK02.WAITING_SID||' WAIT_SQL IS: '||RECORDS_LOCK02.WAITING_SQL);END IF;IF RECORDS_LOCK02.BLOCKING_SID IS NOT NULL THEN DBMS_OUTPUT.put_line('blocking sid: '||RECORDS_LOCK02.BLOCKING_SID||' BLOCK_SQL IS: '||RECORDS_LOCK02.BLOCKING_SQL);END IF;END LOOP;CLOSE CUR_LOCK02;DBMS_OUTPUT.PUT_LINE('------------------解决 锁阻塞、锁等待------------------');SELECT SID,SERIAL# INTO KILL_SID,KILL_SERIAL FROM V$SESSION WHERE SID=V_BLOCKING_SID ; DBMS_OUTPUT.put_line('ACTION: ALTER SYSTEM KILL SESSION ( '||KILL_SID||','||KILL_SERIAL||')');END SOLVE_LOCK;
转载于:https://www.cnblogs.com/iyoume2008/p/4780338.html
