scott解锁
方法一、 用system超级用户登录后,解锁并修改scott密码:alter user scott identified by "123456" account unlock; 登录conn scott/1234656; 方法二、 (1)conn sys/sys as sysdba;//以DBA的身份登录 (2)alter user scott account unlock;// 然后解锁 (3)conn scott/tiger //弹出一个修改密码的对话框,修改一下密码就可以了
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