oracel 锁表查询

--以下几个为相关表

SELECT * FROM v$lock;

SELECT * FROM v$sqlarea;

SELECT * FROM v$session;

SELECT * FROM v$process;

SELECT * FROM v$locked_object;

SELECT * FROM all_objects;

SELECT * FROM v$session_wait;

 

--查看被锁的表

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;

 

--查看那个用户那个进程照成死锁

select b.username, b.sid, b.serial#, logon_time

  from v$locked_object a, v$session b

where a.session_id = b.sid

order by b.logon_time;

 

--查看连接的进程

SELECT sid, serial#, username, osuser FROM v$session;

 

--3.查出锁定表的sid, serial#,os_user_name, machine_name, terminal，锁的type,mode

SELECT s.sid,

       s.serial#,

       s.username,

       s.schemaname,

       s.osuser,

       s.process,

       s.machine,

       s.terminal,

       s.logon_time,

       l.type

  FROM v$session s, v$lock l

WHERE s.sid = l.sid

   AND s.username IS NOT NULL

ORDER BY sid;

 

这个语句将查找到数据库中所有的DML语句产生的锁，还可以发现， 任何DML语句其实产生了两个锁，一个是表锁，一个是行锁。

 

--杀掉进程 sid,serial#

alter system kill session '210,11562';