select object_id,session_id,locked_mode from v$locked_object;
select t2.username,t2.sid,t2.serial#,t2.logon_time
from v$locked_object t1,v$session t2
where t1.session_id=t2.sid order by t2.logon_time;
alter system kill session '157,54616'
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sess.serial#,
lo.oracle_username,
lo.os_user_name, lo.SESSION_ID,
ao.object_name, sess.SECONDS_IN_WAIT,
lo.locked_mode,sess.MACHINE
from v$locked_object lo,
dba_objects ao,
v$session sess
where ao.object_id = lo.object_id and lo.session_id = sess.sid;
select object_name as 对象名称,s.sid,s.serial#,p.spid as 系统进程号
from v$locked_object l , dba_objects o , v$session s , v$process p
where l.object_id=o.object_id and l.session_id=s.sid and s.paddr=p.addr;
1. View the lock table status in the current system in ORACLE
select * from v$locked_object
You can get the sid and objectid by querying v$locked_object, and then use the sid and v$session linked list to query where the locked table is, use the v$session in the The objectid field is associated with the id field of dba_objects to query the detailed lock table status.
查询SQL如下：
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, v$process p
where ao.object_id = lo.object_id
and lo.session_id = sess.sid;
查询是什么SQL引起了锁表的原因，SQL如下：
select l.session_id sid,
s.serial#,
l.locked_mode,
l.oracle_username,
s.user#,
l.os_user_name,
s.machine,
s.terminal,
a.sql_text,
a.action
from v$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. ORACLE unlock method
alter system kill session '146'; –146 is the locked process number, that is, spid