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                            INACTIVE  148          2 HXG                            INACTIVE  150          5 SCOTT                          ACTIVE  151          1                                ACTIVE  154          1                                ACTIVE  159          6                                ACTIVE  160          1                                ACTIVE  161          1                                ACTIVE  162          1                                ACTIVE  163          1                                ACTIVE  SID    SERIAL# USERNAME                       STATUS ---- ---------- ------------------------------ --------  164          1                                ACTIVE  165          1                                ACTIVE  166          1                                ACTIVE  167          1                                ACTIVE  168          1                                ACTIVE  169          1                                ACTIVE  170          1                                ACTIVE 已选择18行。 SQL> alter system kill session ‘148,2‘; 系统已更改。 SQL> select sid,serial#,username,status from v$session;  SID    SERIAL# USERNAME                       STATUS ---- ---------- ------------------------------ --------  146         25 SYS                            ACTIVE  147         11 SYS                            INACTIVE  148          2 HXG                            KILLED  150          5 SCOTT                          INACTIVE  151          1                                ACTIVE  154          1                                ACTIVE  159          6                                ACTIVE  160          1                                ACTIVE  161          1                                ACTIVE  162          1                                ACTIVE  163          1                                ACTIVE  SID    SERIAL# USERNAME                       STATUS ---- ---------- ------------------------------ --------  164          1                                ACTIVE  165          1                                ACTIVE  166          1                                ACTIVE  167          1                                ACTIVE  168          1                                ACTIVE  169          1                                ACTIVE  170          1                                ACTIVE 已选择18行。 SQL> select   V$SESSION.sid,v$session.SERIAL#,v$process.spid,     rtrim(object_type)   object_type,rtrim(owner)   ||   ‘.‘   ||   object_name   object_name,     decode(lmode,       0,   ‘None‘,     1,   ‘Null‘,     2,   ‘Row-S‘,     3,   ‘Row-X‘,     4,   ‘Share‘,     5,   ‘S/Row-X‘,     6,   ‘Exclusive‘, ‘Unknown‘)   LockMode,     decode(request,   0,   ‘None‘,     1,   ‘Null‘,     2,   ‘Row-S‘,     3,   ‘Row-X‘,     4,   ‘Share‘,     5,   ‘S/Row-X‘,     6,   ‘Exclusive‘,   ‘Unknown‘)   RequestMode     ,ctime,   block   b,     v$session.username,MACHINE,MODULE,ACTION,     decode(A.type,     ‘MR‘,   ‘Media   Recovery‘,     ‘RT‘,‘Redo   Thread‘,     ‘UN‘,‘User   Name‘,     ‘TX‘,   ‘Transaction‘,     ‘TM‘,   ‘DML‘,     ‘UL‘,   ‘PL/SQL   User   Lock‘,     ‘DX‘,   ‘Distributed   Xaction‘,     ‘CF‘,   ‘Control   File‘,     ‘IS‘,   ‘Instance   State‘,     ‘FS‘,   ‘File   Set‘,     ‘IR‘,   ‘Instance   Recovery‘,     ‘ST‘,   ‘Disk   Space   Transaction‘,     ‘TS‘,   ‘Temp   Segment‘,     ‘IV‘,   ‘Library   Cache   Invalida-tion‘,     ‘LS‘,   ‘Log   Start   or   Switch‘,     ‘RW‘,   ‘Row   Wait‘,     ‘SQ‘,   ‘Sequence   Number‘,     ‘TE‘,   ‘Extend   Table‘,     ‘TT‘,   ‘Temp   Table‘,     ‘Unknown‘)   LockType     from   (SELECT   *   FROM   V$LOCK)   A,   all_objects,V$SESSION,v$process     where   A.sid   >   6     and   object_name<>‘OBJ$‘     and   A.id1   =   all_objects.object_id     and   A.sid=v$session.sid     and   v$process.addr=v$session.paddr; 同样也是通过写sql从数据字典里查出来。 // SELECT-SQL1 // 功能:检查被加锁的对象 //select obj.OWNER||‘.‘||obj.OBJECT_NAME as OBJ_NAME, // 对象名称(已经被锁住) //   obj.SUBOBJECT_NAME as SUBOBJ_NAME,     // 子对象名称(已经被锁住) //   obj.OBJECT_ID as OBJ_ID,        // 对象ID //   obj.OBJECT_TYPE as OBJ_TYPE,       // 对象类型 //   lock_obj.SESSION_ID as SESSION_ID,     // 会话SESSION_ID //   lock_obj.ORACLE_USERNAME as ORA_USERNAME,  // ORACLE系统用户名称 //   lock_obj.OS_USER_NAME as OS_USERNAME,    // 操作系统用户名称 //   lock_obj.PROCESS as PROCESS       // 进程编号 //from //  ( select * from all_objects where object_id in (select object_id from v$locked_object)) obj, //  v$locked_object lock_obj //where obj.object_id=lock_obj.object_id; //// SELECT-SQL2 //// 功能:检查被加锁的对象以及加锁的会话信息 ////  如果需要手工解除锁,请对照要解锁的对象,记下SESSION_ID,SERIAL# //// 项,然后运行下面的ALTER-SQL1 //select LOCK_INFO.OWNER||‘.‘||LOCK_INFO.OBJ_NAME as OBJ_NAME, // 对象名称(已经被锁住) //   LOCK_INFO.SUBOBJ_NAME as SUBOBJ_NAME,       // 子对象名称(已经被锁住) //   SESS_INFO.MACHINE as MACHINE,         // 机器名称 //   LOCK_INFO.SESSION_ID as SESSION_ID,       // 会话SESSION_ID //   SESS_INFO.SERIAL# as SERIAL#,         // 会话SERIAL# //   LOCK_INFO.ORA_USERNAME as ORA_USERNAME,      // ORACLE系统用户名称 //   LOCK_INFO.OS_USERNAME as OS_USERNAME,       // 操作系统用户名称 //   LOCK_INFO.PROCESS as PROCESS,         // 进程编号 //   LOCK_INFO.OBJ_ID as OBJ_ID,          // 对象ID //   LOCK_INFO.OBJ_TYPE as OBJ_TYPE,         // 对象类型 //   SESS_INFO.LOGON_TIME as LOGON_TIME,       // 登录时间 //   SESS_INFO.PROGRAM  as PROGRAM,         // 程序名称 //   SESS_INFO.STATUS as STATUS,          // 会话状态 //   SESS_INFO.LOCKWAIT as LOCKWAIT,         // 等待锁 //   SESS_INFO.ACTION as ACTION,          // 动作 //   SESS_INFO.CLIENT_INFO as CLIENT_INFO       // 客户信息 // //from // ( //  select obj.OWNER as OWNER, //     obj.OBJECT_NAME as OBJ_NAME, //     obj.SUBOBJECT_NAME as SUBOBJ_NAME, //     obj.OBJECT_ID as OBJ_ID, //     obj.OBJECT_TYPE as OBJ_TYPE, //     lock_obj.SESSION_ID as SESSION_ID, //     lock_obj.ORACLE_USERNAME as ORA_USERNAME, //     lock_obj.OS_USER_NAME as OS_USERNAME, //     lock_obj.PROCESS as PROCESS //  from //   ( select * from all_objects where object_id in (select object_id from v$locked_object)) obj, //   v$locked_object lock_obj //  where obj.object_id=lock_obj.object_id // )  LOCK_INFO, // ( //  select SID, //     SERIAL#, //     LOCKWAIT, //     STATUS, //     PROGRAM, //     ACTION, //     CLIENT_INFO, //     LOGON_TIME, //     MACHINE //  from v$session // ) SESS_INFO //where LOCK_INFO.SESSION_ID=SESS_INFO.SID ; //// 看清楚了 下面就可以 杀死它了。 // ALTER-SQL1 // 功能:杀死会话(SESSION_ID,SERIAL#),可以手工解除锁 //    请手工修改SESSION_ID,SERIAL#为相应值 // 注意:本功能慎重使用,有一定的破坏性,该SQL可以断开客户机和服务器的连接 //ALTER SYSTEM KILL SESSION ‘SESSION_ID,SERIAL#‘; 

查看oracle死锁进程并结束死锁