How to transfer APEX Application to Oracle 11g

Hello,

# OS-Version: Win2003 R2 64 bit
# DB-Version1: Oracle 10.2.0.4
# DB-Version2: Oracle 11.2.x
# APEX-Version1: 3.2.0.00.27
# APEX-Version2: ?

our task is to upgrade Oracle 10g to Oracle 11g. One part is the database, one the APEX application.

Does some one know a white paper or an oracle step by step plan to transfer an APEX application from Oracle 10g to 11g?

Thank you in advance!