Oracle锁表了如何处理
[解决方法]
1)通过查找已被锁定的数据库表以及相关的sid，serial#，spid；
select object_name,s.sid,s.serial#,p.spid from v$locked_object l,dba_objects o,v$session s,v$process p where l.object_id=o.object_id and l.session_id=s.sid and s.paddr=p.addr;
2)在数据库中杀死Session
alter system kill session 'sid,serial#'; --sid,serial#是上面查询出来的结果；
3)杀死对应的应用程序
kill -9 spid
执行步骤演示：
[1] % sqlplus "/as sysdba"
SQL*Plus: Release 11.1.0.6.0 - Production on Fri Nov 26 09:10:32 2010
Copyright (c) 1982, 2007, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - 64bit Production
With the Partitioning and Real Application Testing options
SQL> select object_name,o.owner,s.sid,s.serial#,p.spid from v$locked_object l,dba_objects o,v$session s,v$process p where l.object_id=o.object_id and l.session_id=s.sid and s.paddr=p.addr;
OBJECT_NAME OWNER SID SERIAL# SPID
------------- ------- ---------- ---------- ------
EXTTEST LYJ 139 221 26402
SQL> !ps -ef|grep 26402
oracle 27588 5389 1 10:29:37 pts/tc 0:00 /usr/bin/csh -c ps -ef|grep 26402
oracle 26402 26401 0 10:25:25 ? 0:00 oracleora11g (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
oracle 27590 27588 0 10:29:37 pts/tc 0:00 grep 26402
说明：根据上面查询出来的sid,serial#，杀死Session；
SQL> alter system kill session '139,221';
System altered.
说明：可以看到Session杀死后，已经查询不到锁的对象；
SQL> select object_name,o.owner,s.sid,s.serial#,p.spid from v$locked_object l,dba_objects o,v$session s,v$process p where l.object_id=o.object_id and l.session_id=s.sid and s.paddr=p.addr;
no rows selected
说明：可以看到Session杀死后，进程依然存在；
SQL> !ps -ef|grep 26402
oracle 27951 27949 0 10:30:49 pts/tc 0:00 grep 26402
oracle 27949 5389 1 10:30:49 pts/tc 0:00 /usr/bin/csh -c ps -ef|grep 26402
oracle 26402 26401 0 10:25:25 ? 0:00 oracleora11g (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
说明：根据进程PID杀死进程；
SQL> !kill -9 26402
SQL> !ps -ef|grep 26402
oracle 28110 28108 0 10:31:25 pts/tc 0:00 grep 26402
oracle 28108 5389 1 10:31:25 pts/tc 0:00 /usr/bin/csh -c ps -ef|grep 26402