Turn off user password expiration in ORACLE

Hi,

First of all you can check if user password not expire:
 
SELECT LIMIT FROM dba_profiles WHERE resource_name ='FAILED_LOGIN_ATTEMPTS' 
and PROFILE = (select profile from dba_users where username = 'SCOTT');

Replace scott with user you are interested in , if it is unlimited or no rows selected it means it wont expire.

You can disable passsword expiration for specified user:

SELECT PROFILE FROM dba_users WHERE username = 'User you are interested in';

When you know profile name, you can change it:

ALTER PROFILE <profile_name> LIMIT FAILED_LOGIN_ATTEMPTS UNLIMITED;
ALTER PROFILE <profile_name> LIMIT PASSWORD_LIFE_TIME UNLIMITED;

Best regards.