A pre-requisite for installing OBIEE 11g is configuring LOOPBACK ADAPTER. The Loop back adapter assigns the system(server) a Static IP. If a static address is not assigned there will be issues in starting OPMN services, should the IP change for some reason. Give below are the steps for configuring the loop back adapter on a Windows.
Its 2 step process
1.configure loopbackadapter
2.Modify hosts file to activate your static IP address.
Opening Device Manager-> Click Start->Right click on My Computer and select Properties-> From the left pane, click on Device Manage
In the new Device Manager window, select Network Adapters
Click Start and click on Control Panel->Click and open Network and Sharing center->Click on Manage Adapter Settings on the left pane ->Select the newly created Microsoft Loopback Adapter (can be identified from the 3rd line text) ->Right Click and click Properties->Select Internet Protocol Version 4(TCP/IPv4) ->click on Properties button
Select “Use the following IP address” and specify the IP address to be used. Oracle recommends the following non-routable addresses
· IP Address: 10.10.10.10 or 192.168.x.x (x is any value between 0 and 255)
· Subnet mask: Enter 255.255.255.0
· Leave all the other fields empty ..Finally click ok twice to close window.
Its 2 step process
1.configure loopbackadapter
2.Modify hosts file to activate your static IP address.
Opening Device Manager-> Click Start->Right click on My Computer and select Properties-> From the left pane, click on Device Manage
In the new Device Manager window, select Network Adapters
In the Device Manager window, click Action->From the dropdown, click Add Legacy Hardware ->In the new pop-up screen click Next-> Choose Install the Hardware manually option and click Next -> Select Network Adapters from the list and click Next
choose Microsoft on left side and Microsoft loopback adapter on right and click next
->Click Finish to close the wizard
· IP Address: 10.10.10.10 or 192.168.x.x (x is any value between 0 and 255)
· Subnet mask: Enter 255.255.255.0
· Leave all the other fields empty ..Finally click ok twice to close window.
From the properties screen for TCP/IP, select ‘Use the following IP address’ and fill in a loopback IP address (make sure to pick something not within your current subnet!). In our case we selected IP 192.168.1.253 and mask 255.255.255.0. Then click OK and close the properties window.
Image : Loopback adapter Connection IP address configuration
Now, let’s right click on the original network connection and select properties. Here, you select Internet Protocol (TCP/IP) and click on the Properties button. There you type in the static IP that the ClearPeaks network administrator has assigned you (in our case 192.169.1.63). The subnet mask and the default gateway need to be introduced as well.
Image 9: Loopback adapter Connection DNS configuration
If your OS is not windows Then from Network Connections, click Advanced, and select Advanced Settings from the menu. Make sure your loopback
adapter network connection is at the top of the Connections list (use the up/down arrows if not).
Image : Network connection Advanced settings
Finally, modify your hosts file to associate your static IP address with your computer name. You have to do the following: Open your windows\system32\drivers\etc\ folder, open the hosts file with Notepad and add an entry for your static IP.
In our case 192.168.1.253 DEV-WriteBackSC.clearpeaks.local DEV-WriteBackSC.
Image :Hosts file
TESTING PROCESS:
To verify how the loopback adapter works properly the outcome of running nslookup hostname over a command line should be like the one shown on the following image:
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