Some say 60GB RAM, some say 90GB RAM, latest I have heard was 128GB RAM.
I have heard sounds like minimum of three servers up to 14 servers.
Well let's set it clear by what Oracle is saying on Oracle Support document 1379929.1
Oracle wants to ensure that each customer is successful with Fusion Applications and as it has over a hundred different components giving a sizing estimate has proven to be a bit of a challenge. So instead of giving a one-size fits no-one estimate Oracle has a special process in place that will lead to a proper sizing advice. It consists of contacting your Oracle Sales / Account person who in turn engages the Oracle Fusion Applications environment sizing experts team. Based up on your inputs they will provide a proper sizing report recommending the disk and memory requirements and CPU sizes for your configurations and usage level.
So let's stop guessing, if you want to know the hardware requirements, you need to contact Oracle.
One thing is sure, Oracle Fusion Applications is not like any other ERP system and consists of many components. Creating a local sandbox is not something that can be done on a single "simple" server.
