oracle错误ORA-00054: resource busy and acquire with NOWAIT

Oracle杀死锁进程

先查看哪些表被锁住了:
1、获得sid
select b.owner,
       b.object_name,
       a.session_id,
       a.locked_mode from v$locked_object a,
       dba_objects b where b.object_id = a.object_id;


2、获得sid,serial
select b.username, b.sid, b.serial#, logon_time
  from v$locked_object a, v$session b
 where a.session_id = b.sid
 order by b.logon_time;


3、杀死锁进程
alter system kill session 'sid,serial';
如果有ora-00031错误,则在后面加immediate;
alter system kill session '29,5497' immediate;
--杀数据库进程(数据库服务器的机子)
SELECT a.username, c.spid AS os_process_id, c.pid AS oracle_process_id
 

FROM v$session a, v$process c
 WHERE c.addr = a.paddr
   and a.sid ='1392'
   and a.serial# ='10858';

 -----------------------------------------------------------------------------------------------------------------------

查找锁定的session

SELECT   sn.username,m.SID,sn.SERIAL#, m.TYPE,  
        DECODE (m.lmode,  
                0, 'None',  
                1, 'Null',  
                2, 'Row Share',  
                3, 'Row Excl.',  
                4, 'Share',  
                5, 'S/Row Excl.',  
                6, 'Exclusive',  
                lmode, LTRIM (TO_CHAR (lmode, '990'))  
               ) lmode,  
        DECODE (m.request,  
                0, 'None',  
                1, 'Null',  
                2, 'Row Share',  
                3, 'Row Excl.',  
                4, 'Share',  
                5, 'S/Row Excl.',  
                6, 'Exclusive',  
                request, LTRIM (TO_CHAR (m.request, '990'))  
               ) request,  
        m.id1, m.id2  
    FROM v$session sn, v$lock m  
   WHERE (sn.SID = m.SID AND m.request !=0)        --存在锁请求,即被阻塞  
     OR (    sn.SID =m.SID                        --不存在锁请求,但是锁定的对象被其他会话请求锁定  
         AND m.request = 0  
         AND lmode != 4  
         AND (id1, id2) IN (  
                       SELECT s.id1, s.id2  
                         FROM v$lock s  
                        WHERE request != 0 AND s.id1 = m.id1  
                              AND s.id2 = m.id2)  
        )  
ORDER BY id1, id2, m.request;

 

通过数据字典V$SESSION与V$LOCK来了解正在等待锁资源的用户   
select a.username,a.sid,a.serial#,b.id1 from v$session a ,v$lockb   
         Where  a.lockwait = b.kaddr;   
了解锁住其他用户的用户进程,方法如下:   
select a.username,a.sid,a.serial#,b.id1 from v$session a,v$lockb   
         Where  b.id1  in   
                ( select   distinct  e.id1  from  v$session d,v$lock e  where  d.lockwait =e.kaddr)   
                 And  a.sid = b.sid  and  b.request =0;   

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