Expiring Passwords

Did you know that the default for passwords in Oracle11 is 180 days?

You can disable this feature, adjust this feature, and even assign a grace period for people to change their passwords after the password has expired.

IF the limit was hit...and you get the warning 'password to expire in '...you will need to reset the passwords.  

CREATE PROFILE prof LIMIT
 FAILED_LOGIN_ATTEMPTS 4
 PASSWORD_LOCK_TIME 30
 PASSWORD_LIFE_TIME 90
 PASSWORD_GRACE_TIME 3;
ALTER USER johndoe PROFILE prof;

 (source: Oracle Documentation)

You can also alter a profile and set any of these parmeters:

ALTER PROFILE DEFAULT LIMIT ;

alter profile default limit PASSWORD_LIFE_TIME UNLIMITED;

Good luck out there!