How to Change hostname and domainname?

Hi,

We have a single node oracle apps(10.5.10), and want to change its hostname and domainname. what should we do? I have found the following metalink notes:

 1. How to change the hostname of an Applications Tier using AutoConfig [Metalink 341322.1]
 2. How to change the hostname and/or port of the Database Tier using AutoConfig [Metalink 338003.1]

Using the docs above, I did the following to change host and domainname:

1. DB Tier: Deregister the current database server

SQL> select NAME, SERVER_TYPE from FND_APP_SERVERS, FND_NODES where FND_APP_SERVERS.NODE_ID = FND_NODES.NODE_ID and SERVER_TYPE='DB' and FND_NODES.NODE_NAME='clone1';