Error at step 11 of 12 in Scale out BI system while implementing horizontal clustering.

Error: When implementing horizontal clustering in OBIEE. The process failed at the step of starting BI_Server. The Scale out BI System completed up to 73%.

Cause: Extending domain can't start the BI_Server.

Solution:

1: Do not close the installation window.

2: Check the managed server(bi_server1) log

3: In our case error shown is:

"<Critical> <WebLogicServer> <BEA-000386> <Server subsystem failed. Reason: java.lang.AssertionError: java.net.UnknownHostException: Host Name
java.lang.AssertionError: java.net.UnknownHostException: Host Name"


4: Edit /etc/hosts file in both machines the one we are extending the domain and the one we installed our weblogic server

And added the following entries in the file.

ip hostname hostname.domainname(of the working machine)
ip hostname hostname.domainname(of the machine taht we want to connect)

5: Then try starting the managed server using the command startManagedWebLogic.cmd bi_server1 http://<Admin Server IP Address/Host name>:7001 

6: This will start your managed server.Then from the configuration wizard where we stuck select the tick box on the top.

7: Then retry the extending domain proess.