oracle查询锁表与解锁情况提供解决方案

如果发生了锁等待，我们可能更想知道是谁锁了表而引起谁的等待
以下的语句可以查询到谁锁了表:

代码如下：

SELECT /*+ rule */ s.username, 
decode(l.type,'TM','TABLE LOCK', 
'TX','ROW LOCK', 
NULL) LOCK_LEVEL, 
o.owner,o.object_name,o.object_type, 
s.sid,s.serial#,s.terminal,s.machine,s.program,s.osuser 
FROM v$session s,v$lock l,dba_objects o 
WHERE l.sid = s.sid 
AND l.id1 = o.object_id(+) 
AND s.username is NOT NULL

以下的语句可以查询到谁在等待:

代码如下：

SELECT /*+ rule */ lpad(' ',decode(l.xidusn ,0,3,0))||l.oracle_username User_name, o.owner,o.object_name,o.object_type,s.sid,s.serial# 
FROM v$locked_object l,dba_objects o,v$session s 
WHERE l.object_id=o.object_id 
AND l.session_id=s.sid 
ORDER BY o.object_id,xidusn DESC

解锁命令:

代码如下：

alter system kill session 'sid,serial#'

1).

代码如下：

select LOCK_INFO.OWNER || '.' || LOCK_INFO.OBJ_NAME as "已i物件名Q", --物件名Q(已被i住) 
LOCK_INFO.SUBOBJ_NAME as "已i子物件名Q", -- 子物件名Q(已被i住) 
SESS_INFO.MACHINE as "C器名Q", -- C器名Q 
LOCK_INFO.SESSION_ID as "ID", -- SESSION_ID 
SESS_INFO.SERIAL# as "SERIAL#", -- SERIAL# 
SESS_INFO.SPID as "OS系y的SPID", -- OS系y的SPID 
(SELECT INSTANCE_NAME FROM V$INSTANCE) "例名SID", --例名SID 
LOCK_INFO.ORA_USERNAME as "ORACLE用", -- ORACLE系y用裘Q 
LOCK_INFO.OS_USERNAME as "OS用", -- 作I系y用裘Q 
LOCK_INFO.PROCESS as "M程", -- M程 
LOCK_INFO.OBJ_ID as "οID", -- οID 
LOCK_INFO.OBJ_TYPE as "ο箢型", -- ο箢型 
SESS_INFO.LOGON_TIME as "登rg", -- 登rg 
SESS_INFO.PROGRAM as "程式名Q", -- 程式名Q 
SESS_INFO.STATUS as "B", -- B 
SESS_INFO.LOCKWAIT as "等待i", -- 等待i 
SESS_INFO.ACTION as "幼", -- 幼 
SESS_INFO.CLIENT_INFO as "客糍Y" -- 客糍Y 
from (select obj.OWNER as OWNER, 
obj.OBJECT_NAME as OBJ_NAME, 
obj.SUBOBJECT_NAME as SUBOBJ_NAME, 
obj.OBJECT_ID as OBJ_ID, 
obj.OBJECT_TYPE as OBJ_TYPE, 
lock_obj.SESSION_ID as SESSION_ID, 
lock_obj.ORACLE_USERNAME as ORA_USERNAME, 
lock_obj.OS_USER_NAME as OS_USERNAME, 
lock_obj.PROCESS as PROCESS 
from (select * 
from all_objects 
where object_id in (select object_id from v$locked_object)) obj, 
v$locked_object lock_obj 
where obj.object_id = lock_obj.object_id) LOCK_INFO, 
(select SID, 
SERIAL#, 
LOCKWAIT, 
STATUS, 
(select spid from v$process where addr = a.paddr) spid, 
PROGRAM, 
ACTION, 
CLIENT_INFO, 
LOGON_TIME, 
MACHINE 
from v$session a) SESS_INFO 
where LOCK_INFO.SESSION_ID = SESS_INFO.SID 
order by LOCK_INFO.SESSION_ID;

2).

代码如下：

select sql_text 
from v$sqltext 
where address in (select sql_address from v$session where sid = &sid) 
order by piece;

3).

代码如下：

ALTER SYSTEM KILL SESSION 'ID,SERIAL#';

4).
kill -9 OS系y的SPID