解决方法：

1.查看用户用的哪种profile策略

SQL> select username,profile from dba_users;

USERNAME PROFILE

------------------ -----------------

MGMT_VIEW DEFAULT

SYS DEFAULT

SYSTEM DEFAULT

EKPUSER DEFAULT

2.查看策略的有效天数

SQL> Select * FROM dba_profiles s Where s.profile='DEFAULT' AND resource_name='PASSWORD_LIFE_TIME';

PROFILE RESOURCE_NAME RESOURCE_TYPE LIMIT

------------------------------ ----------------------- ------------ --------

DEFAULT PASSWORD_LIFE_TIME PASSWORD 180

3.修改策略为无限制

SQL> Alter PROFILE DEFAULT LIMIT PASSWORD_LIFE_TIME UNLIMITED;

Profile altered

4.查看确认

SQL> Select * FROM dba_profiles s Where s.profile='DEFAULT' AND resource_name='PASSWORD_LIFE_TIME';

PROFILE RESOURCE_NAME RESOURCE_TYPE LIMIT

------------------------------ -------------------- ------------- ----------

DEFAULT PASSWORD_LIFE_TIME PASSWORD UNLIMITED

修改为及时生效，无需重启数据库

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