How to change Apex Admin Password

login as: root
root@202.65.168.20's password:
Last login: Fri Nov 14 14:28:08 2014 from 114.130.138.17
[root@fws ~]# source /u01/app/oracle/product/11.2.0/xe/bin/oracle_env.sh
[root@fws ~]# cd /u01
[root@fws u01]# ls
app



[root@fws u01]# cd app
[root@fws app]# ls
oracle
[root@fws app]# cd oracle/
[root@fws oracle]# cd product/
[root@fws product]# ls
11.2.0
[root@fws product]# cd 11.2.0/
[root@fws 11.2.0]# ls
xe
[root@fws 11.2.0]# cd xe
[root@fws xe]# ls
apex    ctx   hs    ldap  md       odbc     plsql    slax
bin     dbs   jdbc  lib   network  opmn     precomp  sqlplus
config  demo  jlib  log   nls      oracore  rdbms    xdk
[root@fws xe]# cd apex
[root@fws apex]# sqlplus sys as sysdba

SQL*Plus: Release 11.2.0.2.0 Production on Fri Nov 14 14:38:52 2014

Copyright (c) 1982, 2011, Oracle.  All rights reserved.

Enter password:

Connected to:
Oracle Database 11g Express Edition Release 11.2.0.2.0 - 64bit Production

SQL> @apxchpwd.sql
Enter a value below for the password for the Application Express ADMIN user.


Enter a password for the ADMIN user              []

Session altered.

...changing password for ADMIN

PL/SQL procedure successfully completed.


Commit complete.