ORA-28002: the password will expire within 7 days 解决方法（后面部分为拷贝，前面加上了自己遇到的问题的时候解决方案）

SELECT username,profile FROM dba_users;

SELECT * FROM dba_profiles s WHERE s.profile=‘DEFAULT‘ AND resource_name=‘PASSWORD_LIFE_TIME‘;
PROFILE                        RESOURCE_NAME                    RESOURCE                      LIMIT
------------------------------ -------------------------------- ------------------------------------------------
DEFAULT                        PASSWORD_LIFE_TIME               PASSWORD                180dys

ALTER PROFILE DEFAULT LIMIT PASSWORD_LIFE_TIME UNLIMITED;

sqlplus / as sysdba
alter user system identified by root;