Securing Oracle Business Intelligence can be broken down into two broad areas:
System access security: Controlling access to the components and features that make up Oracle Business Intelligence.
Data access security: Controlling access to business source data and metadata used by Oracle Business Intelligence.
System access security is discussed in this guide and topics include how to limit system access to authorized users, control software resources based on permission grants, and enable secure communication among components.
Data access security is discussed in Metadata Repository Builder's Guide for Oracle Business Intelligence Enterprise Edition.