oracle解锁scott用户

在plsql developer中要是以scott/tiger登录时提示ora-28000 the account is locked。   
解决办法：  
 

新装完Oracle10g后，用scott/tiger测试，会出现以下错误提示：          oracle10g the account is locked          oracle10g the password has expired  

解决方法：

SQL> conn sys/123 as sysdba; Connected.  SQL> alter user scott account unlock;           User altered.  SQL> commit;  Commit complete.  SQL> conn scott/tiger//请输入新密码，并确认后OK  Password changed  Connected. 

查看当前用户：

SQL> show user;User is "scott"