Something I discovered recently is that the DEFAULT profile for Oracle 11g sets the PASSWORD_LIFE_TIME to 180 instead of UNLIMTED by default. Applications will encounter an “ORA-28002: the password will expire within X days” error message if you keep the default value.
To change the PASSWORD_LIFE_TIME, you:
ALTER PROFILE default LIMIT password_life_time UNLIMITED;
Read more about 11g new security related features here.
Nice catch! Useful info. Thanks.