[solution] ORA-28002: the password will expire within xx days

1. connect to db:

sqlplus /nolog
connect / as sysdba;

2. To alter the password expiry policy for a certain user profile in Oracle first check wich profile the user is in using:

select profile from DBA_USERS where username = '';

3. Then you can change the limit to never expire using:

alter profile  limit password_life_time UNLIMITED;

If you want to previously check the limit you may use:

select resource_name,limit from dba_profiles where profile='';

4. then unlock the user

ALTER USER  ACCOUNT UNLOCK;
OR
ALTER USER  identified by  account unlock;