Oracle Apps R12 Change sysadmin password from sqlplus

Two methods to change the sysadmin password:
1- CPASS tool: This is an Oracle tool that allow change system and database user password's
like SYSADMIN, APPLSYSPUB, APPS, GL, AR.

FNDCPASS apps/appspwd 0 Y system/manager USER SYSADMIN newspassword

2- fnd_user_pkg tool: This package maintains oracle application user accounts
To change the sysadmin password execute the following script:

declare
   l_flag  boolean;
begin
  l_flag = fnd_user_pkg.change_password('sysadmin','newpassword');
end;

To check if the new password take place run the following:
select   fnd_web_sec.validate_login('sysadmin','newpassword')    from dual;

The expected result would be Y.