select username,account_status from dba_users
查询dba_users的account_status字段，它有以下值
ACCOUNT_STATUS
OPEN
EXPIRED --这个状态表示已经过期了
修改密码过期
select username,account_status,expiry_date,profile from dba_users;
select * from dba_profiles s where s.profile='DEFAULT' and resource_name='PASSWORD_LIFE_TIME';
alter profile default limit password_life_time unlimited;
ITOUCH_UC
ITOUCH_FILE
ITOUCH_FDA
alter user ITOUCH_FDA identified by 原来密码一致