1. 通過v$session，v$locked_object檢視誰鎖定了資源
select t1.sid, t1.serial#, t1.username, t1.logon_time
from v$session t1 , v$locked_object t2
where t1.sid = t2.session_id
order by
t1.logon_time
more：
2. 通過alter system kill session 'sid, serial#'把session kill掉
alter system kill session '6,8'
select rpad (oracle_username, 10) o_name, session_id sid,
decode (locked_mode,
0, 'none',
1, 'null',
2, 'row share',
3, 'row execlusive',
4, 'share',
5, 'share row exclusive',
6, 'exclusive'
) lock_type,
object_name, xidusn, xidslot, xidsqn
from v$locked_object, all_objects
where v$locked_object.object_id = all_objects.object_id;
select s.terminal,s.machine,s.program,sid,s.serial#,
a.oracle_username, a.process, o.owner, o.object_id, o.object_name, a.locked_mode
from v$session s, v$locked_object a, dba_objects o
where s.sid=a.session_id
and o.object_id=a.object_id
select sid, decode (block, 0, 'no', 'yes') blocker,
decode (request, 0, 'no', 'yes') waiter
from v$lock
where request > 0 or block > 0
order by block desc;
select bs.username "blocking user", bs.username "db user",
ws.username "waiting user", bs.sid "sid", ws.sid "wsid",
bs.serial# "serial#", bs.sql_address "address",
ws.machine "waiting machine", bs.osuser "blocking os user",
ws.osuser "waiting os user", bs.serial# "serial#",
ws.serial# "wserial#",
decode (wk.type,
'mr', 'media recovery',
'rt', 'redo thread',
'un', 'user name',
'tx', 'transaction',
'tm', 'dml',
'ul', 'pl/sql user lock',
'dx', 'distributed xaction',
'cf', 'control file',
'is', 'instance state',
'fs', 'file set',
'ir', 'instance recovery',
'st', 'disk space transaction',
'ts', 'temp segment',
'iv', 'library cache invalidation',
'ls', 'log start or switch',
'rw', 'row wait',
'sq', 'sequence number',
'te', 'extend table',
'tt', 'temp table',
wk.type
) lock_type,
decode (hk.lmode,
0, 'none',
1, 'null',
2, 'row-s (ss)',
3, 'row-x (sx)',
4, 'share',
5, 's/row-x (ssx)',
6, 'exclusive',
to_char (hk.lmode)
) mode_held,
decode (wk.request,
0, 'none',
1, 'null',
2, 'row-s (ss)',
3, 'row-x (sx)',
4, 'share',
5, 's/row-x (ssx)',
6, 'exclusive',
to_char (wk.request)
) mode_requested,
to_char (hk.id1) lock_id1, to_char (hk.id2) lock_id2,
decode
(hk.block,
0, 'not blocking', /**//* not blocking any other processes */
1, 'blocking', /**//* this lock blocks other processes */
2, 'global', /**//* this lock is global, so we can't tell */
to_char (hk.block)
) blocking_others
from v$lock hk, v$session bs, v$lock wk, v$session ws
where hk.block = 1
and hk.lmode != 0
and hk.lmode != 1
and wk.request != 0
and wk.type(+) = hk.type
and wk.id1(+) = hk.id1
and wk.id2(+) = hk.id2
and hk.sid = bs.sid(+)
and wk.sid = ws.sid(+)
and (bs.username is not null)
and (bs.username <> 'system')
and (bs.username <> 'sys')
order by 1;
a.查哪個過程被鎖
查v$db_object_cache檢視: select * from v$db_object_cache where owner='可疑使用者' and locks!=0; -->以確定過程名;
b.查是哪個sid
查v$access檢視: select * from v$access where owner='該使用者' and object='確定的過程名';
c.查sid & serial#
查v$session檢視: select * from v$session where sid='b中查到的id號'; -->記錄paddr
查v$process檢視: select * from v$process where addr='上步中查到的paddr'; -->記錄spid
d.殺程序
先殺oracle程序: alter system kill session '在c中確定的id,在c中確定的serial#';
再殺作業系統程序: kill -9 spid & orakill c中確定的sid c中確定的spid
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