oracle中查看死锁

SELECT substr(v$lock.sid,1,4) "SID",
substr(username,1,12) "UserName",
substr(object_name,1,25) "ObjectName",
v$lock.type "LockType",
decode(rtrim(substr(lmode,1,4)),
'2','Row-S (SS)','3','Row-X (SX)',
'4','Share', '5','S/Row-X (SSX)',
'6','Exclusive', 'Other' ) "LockMode",
substr(v$session.program,1,25) "ProgramName"
FROM V$LOCK,SYS.DBA_OBJECTS,V$SESSION
WHERE (OBJECT_ID = v$lock.id1
AND v$lock.sid = v$session.sid
AND username IS NOT NULL
AND username NOT IN ('SYS','SYSTEM')
AND SERIAL# != 1);

如果有用Toad工具的话，可直接以DBA权限登入，选DataBase=>Monitor=>Session Browser查看死锁情况，并可在裏面直接kill Session进行解锁。

select b.owner,b.object_name,a.session_id,a.locked_mode
from v$locked_object a,dba_objects b
where b.object_id = a.object_id

用取出来的session_id进行kill

seelct * from v$lock;