Oracle 锁相关查询脚本

#查看被锁对象

select b.owner, b.object_name, a.session_id, a.locked_modefrom v$locked_object a, dba_objects bwhere b.object_id = a.OBJECT_ID;

#查看被锁对象和用户信息

SELECT c.owner,c.object_name,c.object_type,b.sid,b.serial#,b.inst_id,b.status,b.osuser,b.machine,'alter system kill session ''' || b.sid || ',' || b.serial# || ',@' ||b.inst_id || ''';'FROM gv$locked_object a, gv$session b, dba_objects cWHERE b.sid = a.session_idAND a.object_id = c.object_idand a.inst_id = b.inst_id;

#查看历史阻塞会话和锁信息

select v.sql_text, v.sql_fulltext, sub.*from v$sql v,(select sample_time,s.sql_id sql_id,session_state,blocking_session,owner || '.' || object_name || ':' ||nvl(subobject_name, '-') obj_name,s.program,s.module,s.machinefrom dba_hist_active_sess_history s, dba_objects owhere sample_time betweento_date('27/02/2019 07:30:02', 'DD/MM/YYYY HH24:MI:SS') andto_date('28/02/2019 15:10:02', 'DD/MM/YYYY HH24:MI:SS')and event = 'enq: TX - row lock contention'and o.data_object_id = s.current_obj#order by 1 desc) subwhere sub.sql_id = v.sql_id;

#找到暂时阻塞的会话和锁定

select s1.username || '@' || s1.machine || ' ( THIS SID=' || s1.sid ||' )  is blocking ' || s2.username || '@' || s2.machine || ' ( SID=' ||s2.sid || ' ) ' AS blocking_statusfrom gv$lock l1, gv$session s1, gv$lock l2, gv$session s2where s1.sid = l1.sidand s2.sid = l2.sidand l1.BLOCK = 1and l2.request > 0and l1.id1 = l2.id1and l2.id2 = l2.id2;

#kill掉大于300秒的会话

SELECT 'kill -9 ' || p.spid,s.username,'alter system kill session ''' || SID || ',' || s.serial# || ''';'FROM v$session s, v$process pWHERE s.paddr = p.addr(+)AND s.SID IN (select sidfrom v$sql_monitorwhere status = 'EXECUTING'and elapsed_time / 1000000 > 300and username in ('MEHMET', 'SALIH'));SELECT 'alter system kill session ''' || SID || ',' || s.serial# || ',@' ||inst_id || ''';',sid,username,serial#,process,NVL(sql_id, 0),sql_address,blocking_session,wait_class,event,p1,p2,p3,seconds_in_waitFROM gv$session sWHERE blocking_session_status = 'VALID'OR sid IN (SELECT blocking_sessionFROM gv$sessionWHERE blocking_session_status = 'VALID');

#Oracle–找到被锁住的对象(非死锁)

SELECT a.sid, a.serial#, a.username, c.os_user_name, a.program, a.logon_time, a.machine, a.terminal, b.object_id, substr(b.object_name,1,40) object_name, DECODE(c.locked_mode,1, 'No Lock',2, 'Row Share',3, 'Row Exclusive',4, 'Shared Table',5, 'Shared Row Exclusive',6, 'Exclusive') locked_mode
from v$session a, dba_objects b, v$locked_object c
where a.sid = c.session_id
and b.object_id = c.object_id;

#当前会话中查看引起行锁竞争的语句

select sw.event,sw.sid,sw.p1,sw.p2,sw.p3,s.ROW_WAIT_OBJ#,s.ROW_WAIT_FILE#,s.ROW_WAIT_BLOCK#,s.ROW_WAIT_ROW#,o.OWNER,o.OBJECT_NAME,o.OBJECT_ID,o.DATA_OBJECT_ID,o.OBJECT_TYPE,st.sql_id,st.sql_textfrom v$session_wait sw, v$session s, dba_objects o, v$sql stwhere sw.sid = s.sidand o.object_id = s.ROW_WAIT_OBJ#and (st.sql_id = s.sql_id or st.sql_id = s.prev_sql_id)and sw.event = 'enq: TX - row lock contention';

#从历史会话中查看引起行锁竞争的语句

select ash.sample_time,ash.instance_number,ash.user_id,u.username,ash.session_id,ash.session_serial#,ash.current_obj#,o.owner,o.object_name,o.object_type,ash.sql_id,ash.sql_opname,ash.wait_class,ash.program,ash.module,ash.blocking_session_status,ash.blocking_session,ash.blocking_session_serial#,ash.blocking_inst_id,st.inst_id,st.sql_textfrom dba_hist_active_sess_history ash,dba_users                    u,dba_objects                  o,gv_$sql                      stwhere to_char(ash.sample_time, 'YYYY-MM-DD hh24:mi:ss') between  '2022-03-22 13:30:00' and '2022-03-22 15:30:00'and ash.time_waited > 0and ash.session_state = 'WAITING'and ash.user_id = u.user_idand ash.current_obj# = o.object_idand st.sql_id = ash.sql_idand ash.event = 'enq: TX - row lock contention';

#单实例的会话阻塞

SELECT s1.username || '@' || s1.machine || ' ( SID=' || s1.sid ||' )  is blocking ' || s2.username || '@' || s2.machine || ' ( SID=' ||s2.sid || ' ) ' AS blocking_statusFROM v$lock l1, v$session s1, v$lock l2, v$session s2WHERE s1.sid = l1.sidAND s2.sid = l2.sidAND l1.BLOCK = 1AND l2.request > 0AND l1.id1 = l2.id1AND l2.id2 = l2.id2;

#单实例的会话阻塞，详细信息

SELECT vs.username,vs.osuser,vh.sid locking_sid,vs.status status,vs.module module,vs.program program_holding,jrh.job_name,vsw.username,vsw.osuser,vw.sid waiter_sid,vsw.program program_waiting,jrw.job_name,'alter system kill session ' || '''' || vh.sid || ',' || vs.serial# ||''';' "Kill_Command"FROM v$lock                     vh,v$lock                     vw,v$session                  vs,v$session                  vsw,dba_scheduler_running_jobs jrh,dba_scheduler_running_jobs jrwWHERE (vh.id1, vh.id2) IN (SELECT id1, id2FROM v$lockWHERE request = 0INTERSECTSELECT id1, id2FROM v$lockWHERE lmode = 0)AND vh.id1 = vw.id1AND vh.id2 = vw.id2AND vh.request = 0AND vw.lmode = 0AND vh.sid = vs.sidAND vw.sid = vsw.sidAND vh.sid = jrh.session_id(+)AND vw.sid = jrw.session_id(+);

#RAC环境的会话阻塞

SELECT DISTINCT S1.USERNAME || '@' || S1.MACHINE || ' ( INST=' ||S1.INST_ID || ' SID=' || S1.SID || ' ) IS BLOCKING ' ||S2.USERNAME || '@' || S2.MACHINE || ' ( INST=' ||S1.INST_ID || ' SID=' || S2.SID || ' ) ' AS BLOCKING_STATUSFROM GV$LOCK L1, GV$SESSION S1, GV$LOCK L2, GV$SESSION S2WHERE S1.SID = L1.SIDAND S2.SID = L2.SIDAND S1.INST_ID = L1.INST_IDAND S2.INST_ID = L2.INST_IDAND L1.BLOCK > 0AND L2.REQUEST > 0AND L1.ID1 = L2.ID1AND L1.ID2 = L2.ID2;

#RAC环境的会话阻塞和对象信息

SELECT DISTINCT S1.USERNAME || '@' || S1.MACHINE || ' ( INST=' ||S1.INST_ID || ' SID=' || S1.SID || ' ) IS BLOCKING ' ||S2.USERNAME || '@' || S2.MACHINE || ' ( INST=' ||S1.INST_ID || ' SID=' || S2.SID || ' ) OBJ_ID:' || L1.ID1 ||' OBJ_NAME:' || O.OBJECT_NAME AS BLOCKING_STATUSFROM GV$LOCK L1, GV$SESSION S1, GV$LOCK L2, GV$SESSION S2, DBA_OBJECTS OWHERE S1.SID = L1.SIDAND S2.SID = L2.SIDAND S1.INST_ID = L1.INST_IDAND S2.INST_ID = L2.INST_IDAND L1.ID1 = OBJECT_IDAND L1.ID1 = O.OBJECT_IDAND L1.BLOCK > 0AND L2.REQUEST > 0AND L1.ID1 = L2.ID1AND L1.ID2 = L2.ID2;

#RAC环境的会话阻塞，针对某个具体的对象

SELECT DISTINCT S1.USERNAME || '@' || S1.MACHINE || ' ( INST=' ||S1.INST_ID || ' SID=' || S1.SID || ' ) IS BLOCKING ' ||S2.USERNAME || '@' || S2.MACHINE || ' ( INST=' ||S1.INST_ID || ' SID=' || S2.SID || ' ) OBJ_ID:' || L1.ID1 ||' OBJ_NAME:' || O.OBJECT_NAME AS BLOCKING_STATUSFROM GV$LOCK L1, GV$SESSION S1, GV$LOCK L2, GV$SESSION S2, DBA_OBJECTS OWHERE S1.SID = L1.SIDAND S2.SID = L2.SIDAND S1.INST_ID = L1.INST_IDAND S2.INST_ID = L2.INST_IDAND L1.ID1 = OBJECT_IDAND L1.ID1 = O.OBJECT_IDAND L1.BLOCK > 0AND L2.REQUEST > 0AND L1.ID1 = L2.ID1AND L1.ID2 = L2.ID2AND object_id in (SELECT OBJECT_IDFROM DBA_OBJECTSWHERE OWNER = 'ABC'AND OBJECT_NAME = 'XYZ');

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