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1、登录Linux系统

2、进入Oracle用户
[root@localhost ~]# su -l oracle

#### su -l oracle
3、启动Oracle sqlplus
[oracle@localhost ~]$ sqlplus '/as sysdba'

#### sqlplus '/as sysdba'


 SQL*Plus: Release 10.2.0.1.0 - Production on Thu Jan 24 22:56:40 2013

Copyright (c) 1982, 2005, Oracle.  All rights reserved.


Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production
With the Partitioning, OLAP and Data Mining Scoring Engine options

SQL> 

?5、执行修改密码SQL语句

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2、alter user sys identified by "密码"
alter user system identified by "123456"

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