components of OBIA : 

DAC Repository metadata files: Content includes repository objects such as tables, subject areas, execution plans, and tasks, and is contained in XML files.The DAC client and server were included until version 7.9.5. Since then it is a separate installer.

EMBEDDED Informatica ETL tool and repository : ETL is a third party tool which includes mappings (wrapped in workflows) to extract data from the supported source systems (various versions of standard applications such as Siebel CRM - yes it was first - , ORACLE eBusiness Suite, Peoplesoft, JDEdwards and SAP (BI Apps version 7.8.4) ) and load the data into the Oracle Business Analysis Warehouse.

Pre built metadata content : This metadata content is contained in the Oracle BI Applications repository file (OracleBIAnalyticsApps.rpd). It maps the source physical tables to a generic business model and includes more than 100 presentation catalogs (aka subject areas) to allow queries and segmentation using Oracle BI clients such as Answers, Dashboards and SEGMENT Designer

Pre built reports and dashboard content : Contains hundreds of requests and ready-to-use dashboards which enable tight integration between the source applications and the BI infrastructure

Oracle Business Analytics Warehouse : The prebuilt data warehouse that holds data extracted, transformed, and loaded from the transactional database

Ad-hoc Analysis : Metadata layer serves as foundation to provide flexible and intuitive ad-hoc reporting and custom dashboard designs through Oracle BI Answers and Oracle BI Dashboard tools that are part of the OBIEE toolset.

Role-Based Dashboards : DELIVERED role-based dashboards are easily configurable to meet specific organizational needs and practices.

components of OBIA : 

DAC Repository metadata files: Content includes repository objects such as tables, subject areas, execution plans, and tasks, and is contained in XML files.The DAC client and server were included until version 7.9.5. Since then it is a separate installer.

Embedded Informatica ETL tool and repository : ETL is a third party tool which includes mappings (wrapped in workflows) to extract data from the supported source systems (various versions of standard applications such as Siebel CRM - yes it was first - , Oracle eBusiness Suite, Peoplesoft, JDEdwards and SAP (BI Apps version 7.8.4) ) and load the data into the Oracle Business Analysis Warehouse.

Pre built metadata content : This metadata content is contained in the Oracle BI Applications repository file (OracleBIAnalyticsApps.rpd). It maps the source physical tables to a generic business model and includes more than 100 presentation catalogs (aka subject areas) to allow queries and segmentation using Oracle BI clients such as Answers, Dashboards and Segment Designer

Pre built reports and dashboard content : Contains hundreds of requests and ready-to-use dashboards which enable tight integration between the source applications and the BI infrastructure

Oracle Business Analytics Warehouse : The prebuilt data warehouse that holds data extracted, transformed, and loaded from the transactional database

Ad-hoc Analysis : Metadata layer serves as foundation to provide flexible and intuitive ad-hoc reporting and custom dashboard designs through Oracle BI Answers and Oracle BI Dashboard tools that are part of the OBIEE toolset.

Role-Based Dashboards : Delivered role-based dashboards are easily configurable to meet specific organizational needs and practices.