Oracle Business Intelligence Enterprise Edition (OBIEE) 11g R1 (220.127.116.11) for Windows & Linux is now available to download from here
High Level Steps to Install OBIEE 11g
Step 3 i.e. Install OBIEE Server will create MW_HOME (Middleware Home), WL_HOME (WebLogic Home), ORACLE_HOME (for BI Server), DOMAIN_HOME (runtime java component) and INTANCE_HOME (runtime system component) for more information various homes in Oracle Fusion Middleware here
For a detailed write-up on OBIEE 11g, check Mark Rittman’s post here
Oracle ACE, Author, Speaker and Founder of K21 Technologies & K21 Academy : Specialising in Design, Implement, and Trainings.