Here’s are the simple steps to create an OID instance.
1. Install and configure your database instance and make sure it is working with all listener and emctl ports up.
2. Install weblogic, no need to configure a domain right now.
3. Install idm or OID, during installation you are provided with an option of creating a schema and adding a new weblogic domain.
4. once you have create schema and configured weblogic server using the OID installation menu, it take another 30-50 minutes to complete the entire configuration of OID.
Planning to have a better guide with screenshots, will update it soon.