How to Change ADMIN user of internal Workspace password and port in oracle apex ?

Follow the following step to change ADMIN user password in oracle apex.
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\Administrator> G:

G:\cd G:\app\apex_4_install\apex

G:\app\apex_4_install\apex>
G:\app\apex_4_install\apex>
G:\app\apex_4_install\apex>
G:\app\apex_4_install\apex>sqlplus /nolog

SQL*Plus: Release 11.1.0.6.0 - Production on Tue J

Copyright (c) 1982, 2007, Oracle. All rights rese

SQL>
SQL> conn / as sysdba
Connected.
SQL>
SQL>
SQL>
SQL> @apxconf.sql

PORT
----------
8080

Enter values below for the XDB HTTP listener port and the password for the Appli
cation Express ADMIN user.
Default values are in brackets [ ].
Press Enter to accept the default value.


Enter a password for the ADMIN user []
Enter a port for the XDB HTTP listener [ 8080]
...changing HTTP Port

PL/SQL procedure successfully completed.


PL/SQL procedure successfully completed.


Session altered.

...changing password for ADMIN

PL/SQL procedure successfully completed.


Commit complete.

SQL>