https://community.oracle.com/thread/631553

alter user SYS identified by ADMIN;
alter user system identified by System11;


http://serverfault.com/questions/37622/how-do-i-turn-off-oracle-password-expiration
http://stackoverflow.com/questions/1766445/oracle-how-to-set-user-password-unexpire
http://stackoverflow.com/questions/1095871/how-do-i-turn-off-oracle-password-expiration



ORA-28002: the password will expire within 7 days
http://dba.stackexchange.com/questions/659/how-to-get-rid-of-ora-28002-message-the-password-will-expire-within-6-days
http://nimishgarg.blogspot.com.by/2012/07/ora-28002-password-will-expire-within-7.html


SELECT profile FROM dba_users WHERE username = 'SYSTEM';

alter profile default limit password_life_time unlimited;
ALTER PROFILE DEFAULT LIMIT PASSWORD_LIFE_TIME UNLIMITED;

alter user SYSTEM identified by "<pwd>";