1.连接sqlPlus
2.查看所有用户的状态
select username,account_status from dba_users order by username;
3.解锁hr用户(scott同理)命令
alter user hr account unlock;
4.hr用户设置密码为 ‘password’
alter user hr identified by password;
[3,4合并]
alter user hr account unlock identified by password;
5.hr用户加锁
alter user hr account lock;
6.password密码失效
alter user hr password expire;
[5,6合并]
alter user hr account lock password expire;
7.切换用户
sql> conn hr/password;