Oracle中表被锁的查询与处理

1.查询引起了锁表的原因

select l.session_id sid,
      s.serial#,
      l.locked_mode,
      l.oracle_username,
      s.user#,
      l.os_user_name,
      s.machine,
      s.terminal,
      a.sql_text,
      a.action
 from v$sqlarea a, v$session s, v$locked_object l
 where l.session_id = s.sid
 and s.prev_sql_addr = a.address
 order by sid, s.serial#;

2.查询被锁的表


select distinct 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

3.查看是哪个session引起的

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

4.杀掉对应进程即解锁

1	alter system kill session '135,39751'; --其中135是第3步中查询的sid, 39751是serial#。