1. 通過v$session，v$locked_object查看誰鎖定了資源

select t1.sid, t1.serial#, t1.username, t1.logon_time

fromv$session t1 , v$locked_object t2

where t1.sid = t2.session_id

order byt1.logon_time

more：

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,

DECODE(locked_mode,

0,

'None',

1,

'Null',

2,

'Row share',

3,

'Row Execlusive',

4,

'Share',

5,

'Share Row Exclusive',

6,

'Exclusive') lock_type

from v$session s, v$locked_object a, dba_objects o

where s.sid = a.session_id

and o.object_id = a.object_id;

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",

bs.sql_hash_value "Sql hash", bs.program "Blocking App",

ws.program "Waiting App", bs.machine "Blocking Machine",

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$DB_OBJECT_CACHE視圖: ? select * from v$db_object_cache where owner='可疑用戶' and locks!=0; ?-->以確定過程名;

B.查是哪個SID

查V$ACCESS視圖: ? select * from v$access where owner='該用戶' and object='確定的過程名';

C.查SID & SERIAL#

查V$SESSION視圖: ?select * from v$session where sid='B中查到的ID號'; ? ? ? -->記錄paddr

查V$PROCESS視圖: ?select * from v$process where addr='上步中查到的PADDR'; ?-->記錄SPID

D.殺進程

先殺Oracle進程: ? alter system kill session '在C中確定的ID,在C中確定的SERIAL#';

再殺操作系統(tǒng)進程: kill -9 SPID ? & ORAKILL C中確定的SID C中確定的SPID

創(chuàng)作挑戰(zhàn)賽新人創(chuàng)作獎勵來咯，堅持創(chuàng)作打卡瓜分現金大獎

總結

以上是生活随笔為你收集整理的oracle如何避免表锁定,Oracle 解决表锁定的问题的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。