Oracle 解锁办法

用系统账户如sys      as  SYSDBA 登录进去

1、查看数据库锁,诊断锁的来源及类型： 
　　select object_id,session_id,locked_mode from v$locked_object; 
或者用以下命令： 
     select b.owner,b.object_name,l.session_id,l.locked_mode 
     from v$locked_object l, dba_objects b 
     where b.object_id=l.object_id 

2、找出数据库的serial#,以备杀死： 
　  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; 

3、杀死该session 
　　alter system kill session 'sid,serial#'