Oracle 11g用户修改密码及加锁解锁功能实例代码

alter user identityName identified by password; —–修改密码 
alter user identityName aount unlock; —–解锁 
alter user identityName aount lock; —–加锁 
identityName:需要修改的用户； 
password新设密码；

SQL> conn sys/sys as sysdba
Connected.
SQL> show user
USER is "SYS"
SQL> alter user hr aount unlock;（解锁）
User altered.
SQL> alter user hr identified by password;（更改密码，这一步是必需的，否则hr模式还是不能使用的）
User altered.
到这里hr模式就可以使用了,试试
SQL> conn hr/password
Connected.
SQL> show user
USER is "HR"
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相反的
SQL> alter user hr aount lock;（上锁）
User altered.
SQL> alter user hr password expire;（密码失效）
User altered.
SQL> conn hr/password
ERROR:
ORA-28000: the aount is locked
Warning: You are no longer connected to ORACLE.