Oracle 解決表鎖定的問題

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

from v$session t1 , v$locked_object t2

where t1.sid = t2.session_id

order by t1.logon_time 

 

more：

select s.terminal,<br /> s.machine,<br /> s.program,<br /> sid,<br /> s.serial#,<br /> a.oracle_username,<br /> a.process,<br /> o.owner,<br /> o.object_id,<br /> o.object_name,<br /> a.locked_mode,<br /> DECODE(locked_mode,<br /> 0,<br /> 'None',<br /> 1,<br /> 'Null',<br /> 2,<br /> 'Row share',<br /> 3,<br /> 'Row Execlusive',<br /> 4,<br /> 'Share',<br /> 5,<br /> 'Share Row Exclusive',<br /> 6,<br /> 'Exclusive') lock_type<br /> from v$session s, v$locked_object a, dba_objects o<br /> where s.sid = a.session_id<br /> and o.object_id = a.object_id;<br /> 

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='可疑使用者' 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='該使用者' 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#';

再殺作業系統進程: kill -9 SPID   & ORAKILL C中確定的SID C中確定的SPID