Weblogic Domain Creation Fails due to PermGen Space Error OBIEE 11.1.1.6.0

During installation of OBIEE 11.1.1.6.0 on Windows Server 2008 - 64bit, it failed at the Domain Creation Step(Step 13 of 14) with the below error code

Creating a new AdminServer Object ...

 AdminServer port is 7001 Starting the domain ...

 java.lang.OutOfMemoryError: PermGen space
 java.lang.OutOfMemoryError: PermGen space
 java.lang.OutOfMemoryError: PermGen space

Reason:
This occurs due to insufficient runtime memory to JAVA during installation.

Solution:
This can be avoided by modifying the ORAPARAM.ini file in installer location like below.
D:\bishiphome\Disk1\install\win64\ORAPARAM.ini

Add the below line
JRE_MEMORY_OPTIONS=" -mx1024m -XX:MaxPermSize=1024m"

First make a clean uninstall of the entire OBIEE including the files from the directories.
Then restart the installation

Now during the installtion, at the stage when OneOff Patches are being installed(Step 12 of 14), make a modification to the ORAPARAM.ini parameter in the installed location like below.
D:\OBIEEMIDDLEWARE\Oracle_BI1\oui\ORAPARAM.ini

Add the same line specified above.

This would be helping in allocating sufficient memory to JAVA when
D:\OBIEEMIDDLEWARE\Oracle_BI1\bin\config.bat file is run during next step(Step 13 of 14)