oracle_解锁表_解锁用户

1、解锁用户

以dba身份登录   sqlplus / as sysdba

 alter user scott account unlock;

2、解锁表

alter   system   kill   session

<!----1.查出锁定object的session的信息以及被锁定的object名------------------------------------>

SELECT l.session_id sid, s.serial#, l.locked_mode,l.oracle_username,  l.os_user_name,s.machine, s.terminal, o.object_name, s.logon_time  

FROM v$locked_object l, all_objects o, v$session s  

WHERE l.object_id = o.object_id

 AND l.session_id = s.sid  

ORDER BY sid, s.serial# ;

<!---------------------2.查出锁定表的session的 sid, serial#,os_user_name, machine name, terminal和

执行的语句 --比上面那段多出sql_text和action ----------------------------------------------------------->

SELECT l.session_id sid, s.serial#, l.locked_mode, l.oracle_username, s.user#,  l.os_user_name,s.machine, s.terminal,a.sql_text, a.action

 FROM v$sqlarea a,v$session s, v$locked_object l  

WHERE l.session_id = s.sid

 AND s.prev_sql_addr = a.address  

ORDER BY sid, s.serial#;  

<!-------------------------3.查出锁定表的sid, serial#,os_user_name, machine_name, terminal，锁的type,mode ------------------------------------------------------------>

SELECT s.sid, s.serial#, s.username, s.schemaname, s.osuser, s.process, s.machine,  s.terminal, s.logon_time, l.type

 FROM v$session s, v$lock l

 WHERE s.sid = l.sid  

AND s.username IS NOT NULL  

ORDER BY sid;    

 <!--------杀锁命令---------->  

  alter system kill session 'sid,serial#';    

  alter system kill session '3,21395';

 ---------------------------  

alter system kill session 'sid,serial#'  SELECT /*+ rule */ s.username,  decode(l.type,'TM','TABLE LOCK',  'TX','ROW LOCK',  NULL) LOCK_LEVEL,  o.owner,o.object_name,o.object_type,  s.sid,s.serial#,s.terminal,s.machine,s.program,s.osuser  

FROM v$session s,v$lock l,dba_objects o

 WHERE l.sid = s.sid

 AND l.id1 = o.object_id(+)  AND s.username is NOT NULL