Oracle 11g - Network Configuration check

Question

Hi All,
This is my first time here and I am a newbie to Linux and Oracle installation.
I just finished installing Linux Enterprise version 5 ( provided by Oracle corp).
At the time of installation I did not do any type of network configuration and let the default network connection take effect.
After installing all the pre requirements for the Oracle 11g installation on my laptop I was stopped with a warning on the Oracle univesal Installer - product specific Prerequisite check.
This is what it gave me---
Checking Network Configuration requirements..
Check complete. The overall results of this check is : Not executed <<<
Recomendation : Oracle supports installation on systems with DHCP-assigned public IP addresses. However the primary network interface on the system should be configured with a Static IP Address in order for the oracle to function properly.See the installation guide for more details on installing the software on systems configured with DHCP.
I checked with the manuals and do not find any information about how to fix it.
The info given in the manual is
Installing on DHCP Computers
Dynamic Host Configuration Protocol (DHCP) assigns dynamic IP addresses on a network. Dynamic addressing enables a computer to have a different IP address each time it connects to the network. In some cases, the IP address can change while the computer is still connected. You can have a mixture of static and dynamic IP addressing in a DHCP system.
In a DHCP setup, the software tracks IP addresses, which simplifies network administration. This lets you add a new computer to the network without having to manually assign that computer a unique IP address.
Now i made some changes to the Network Config as root user and my Network configuration file looks like ( ie. /etc/hosts)
127.0.0.1 localhost StaticIP
It was previously something like
127.0.0.1 localhost.localdomain localhost.
As per the installation documents where ever i had references to localhost, i had left the localhost with the same name ' localhost' and have not changed it. Now it has StaticIP and I am not sure how to proceed.
What must I do?
I want to fix this error and also want oracle to work.
Thanks for your help!!

Answer 1

Thanks a lot guys to respond to this. I am using OEL5 ( supplied by Oracle Corp) and Oracle 11g. Installation of Linux takes about 40 minutes and installation of Oracle takes about an hour to 2 hours. Not sure why some RPM's do not show up on the CD's provided by Oracle.
So I tried to reinstall Linux . But the whole problem is, the Network Screens ( during installation) do not show up at all. It just skips that portion and goes to the Screen where there is the world Map and tells you to set up the time and date. I tried installing Linux many times and those Network configuration screens do not show up at all.
Here is my dilemma. After installing Oracle 11g, and immediately accessing the site https://localhost.localdomain:1158/em takes me into the OEM.
But after I shut down my machine and boot up again, I am unable to use the OEM's site https://localhost.localdomain:1158/em. Instead I get the message
===============================
Unable to Connect
Firefox can't establish a connection to the server at localhost.localdomain:1158
1. The site could be temporaily unavailable
2. If you are unable to load any pages, check your computer's network connection
3. If your computer is protected by firewall or proxy, make sure that firefox is permitted to access the Web.
===================================
I am thinking the problem is with 2. I do not have any firewall in my machine and i have also disbaled SELINUX.
I want to configure the computer so i can use the OEM in my Linux laptop.
My $ cat /etc/hosts gives
127.0.0.1 localhost.localdomain.
Please help me setup the Network so i can connect to 11g OEM.
And BTW this laptop is not even used to connect to the Internet.
Thanks
Sulu