ETL Server, Oracle ODS Database, and Oracle Star Database on same box:
CPU
Quad Core 3.46 GHz or equivalent
RAM
4 GB without Star; 8 GB with Star
Notes:
The above requirements assume light Business Analytics (Oracle Star Database) usage. Otherwise, you should allocate a separate server for the Oracle Star Database.
You should add 4 GB RAM if you installed OBIEE on the same box.