oracle用户解锁

装了一个oracle，长时间不用，难免密码啥的忘了

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报错：OCISessionBegin

ORA-28000: the account is locked

解决：alter user scott account unlock;--解锁

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报错：OCISessionBegin

ORA-28001: the password has expired

试十次就锁住啦，慎重啊

解决：ALTER USER scott IDENTIFIED BY tiger ;--换密码

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问题：SELECT * FROM dba_profiles WHERE profile='DEFAULT'

AND resource_name='PASSWORD_LIFE_TIME'

--查询密码期限，默认180天

解决：ALTER PROFILE DEFAULT LIMIT PASSWORD_LIFE_TIME UNLIMITED

--改为无限长，但不建议