Oracle 查看被锁的表和解锁

--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;

--查看被锁的表信息
select sess.sid,
       sess.serial#,
       lo.oracle_username,
       lo.os_user_name,
       ao.object_name,
       lo.locked_mode
  from v$locked_object lo, dba_objects ao, v$session sess
 where ao.object_id = lo.object_id
   and lo.session_id = sess.sid;

--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;

--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 '386,25655';