查看oracle死锁进程并结束死锁
查看锁表进程SQL语句1：
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
where ao.object_id = lo.object_id and lo.session_id = sess.sid;

查看锁表进程SQL语句2：
select * from v$session t1, v$locked_object t2 where t1.sid = t2.SESSION_ID;

杀掉锁表进程：
如有記錄則表示有lock，記錄下SID和serial# ，將記錄的ID替換下面的738,1429，即可解除LOCK
alter system kill session '738,1429';


用这个可以查：  select s.sid,s.machine,o.object_name,l.oracle_username,l.locked_mode, 'ALTER  SYSTEM  KILL  SESSION  '''||s.sid||',  '||s.serial#||''';'   Command  from  v$locked_object  l,v$session  s,all_objects  o  where  l.session_id=s.sid  and  l.object_id=o.object_id  可以查看哪台机器哪个用户锁了记录, 其中command是用来杀掉锁住记录的session
******************************************************************************************************************
SELECT        A.OBJECT_ID,        B.OBJECT_NAME,        A.SESSION_ID,        A.ORACLE_USERNAME,        A.OS_USER_NAME,        A.PROCESS,        A.LOCKED_MODE FROM V$LOCKED_OBJECT A, DBA_OBJECTS B WHERE A.OBJECT_ID = B.OBJECT_ID;
SELECT T2.USERNAME, T2.SID, T2.SERIAL#, T2.LOGON_TIME FROM V$LOCKED_OBJECT T1, V$SESSION T2 WHERE T1.SESSION_ID = T2.SID ORDER BY T2.LOGON_TIME;
ALTER SYSTEM KILL SESSION 'sid, serial#';
********************************************************************************************************************
session 1: C:\>sqlplus hxg/hxg
SQL> select * from scott.t;
         A B                    C ---------- -------------------- --------------------        111 aa                   bb        222 hello                world
SQL> update scott.t  set b='good' where a=222;
已更新 1 行。
session 2: C:\>sqlplus scott/tiger
SQL> select * from scott.t;
         A B                    C ---------- -------------------- --------------------        111 aa                   bb        222 hello                world
SQL> update t set b='asdfds' where a=222;
挂起。。。。
session 3: C:\>sqlplus "system/*** as sysdba"
SQL> select sid,serial#,username,status from v$session;
SID    SERIAL# USERNAME                       STATUS ---- ---------- ------------------------------ --------  146         25 SYS                            ACTIVE  147         11 SYS