oracle查询锁表与解锁情况提供解决方案

Posted 2023-03-11

参考技术A 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:
复制代码
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:
复制代码
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:
复制代码
代码如下:
alter
system
kill
session
'sid,serial#'
1).
复制代码
代码如下:
select
LOCK_INFO.OWNER
||
'.'
||
LOCK_INFO.OBJ_NAME
as
"已锁物件名称",
--物件名称(已经被锁住)
LOCK_INFO.SUBOBJ_NAME
as
"已锁子物件名称",
--
子物件名称(已经被锁住)
SESS_INFO.MACHINE
as
"机器名称",
--
机器名称
LOCK_INFO.SESSION_ID
as
"会话ID",
--
会话SESSION_ID
SESS_INFO.SERIAL#
as
"会话SERIAL#",
--
会话SERIAL#
SESS_INFO.SPID
as
"OS系统的SPID",
--
OS系统的SPID
(SELECT
INSTANCE_NAME
FROM
V$INSTANCE)
"实例名SID",
--实例名SID
LOCK_INFO.ORA_USERNAME
as
"ORACLE用户",
--
ORACLE系统用户名称
LOCK_INFO.OS_USERNAME
as
"OS用户",
--
作业系统用户名称
LOCK_INFO.PROCESS
as
"进程编号",
--
进程编号
LOCK_INFO.OBJ_ID
as
"对象ID",
--
对象ID
LOCK_INFO.OBJ_TYPE
as
"对象类型",
--
对象类型
SESS_INFO.LOGON_TIME
as
"登录时间",
--
登录时间
SESS_INFO.PROGRAM
as
"程式名称",
--
程式名称
SESS_INFO.STATUS
as
"会话状态",
--
会话状态
SESS_INFO.LOCKWAIT
as
"等待锁",
--
等待锁
SESS_INFO.ACTION
as
"动作",
--
动作
SESS_INFO.CLIENT_INFO
as
"客户资讯"
--
客户资讯
from
(select
obj.OWNER
as
OWNER,
obj.OBJECT_NAME
as
OBJ_NAME,
obj.SUBOBJECT_NAME
as
SUBOBJ_NAME,
obj.OBJECT_ID
as
OBJ_ID,
obj.OBJECT_TYPE
as
OBJ_TYPE,
lock_obj.SESSION_ID
as
SESSION_ID,
lock_obj.ORACLE_USERNAME
as
ORA_USERNAME,
lock_obj.OS_USER_NAME
as
OS_USERNAME,
lock_obj.PROCESS
as
PROCESS
from
(select
*
from
all_objects
where
object_id
in
(select
object_id
from
v$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$session
a)
SESS_INFO
where
LOCK_INFO.SESSION_ID
=
SESS_INFO.SID
order
by
LOCK_INFO.SESSION_ID;
2).
复制代码
代码如下:
select
sql_text
from
v$sqltext
where
address
in
(select
sql_address
from
v$session
where
sid
=
&sid)
order
by
piece;
3).
复制代码
代码如下:
ALTER
SYSTEM
KILL
SESSION
'会话ID,会话SERIAL#';
4).
kill
-9
OS系统的SPID