Architecture of Oracle identity Manager

Architecture of Oracle identity Manager 11g R1:

The Oracle Identity Manager architecture consists of three tiers

• Tier 1: Client: The Oracle Identity Manager application GUI component reside in this tier. Users log in by using the Oracle Identity Manager client.The Oracle Identity Manager client interacts with the Oracle Identity Manager server, providing it with the user's login credentials.
• Tier 2: Application Server: The second tier implements the business logic, which resides in the Java Data Objects that are managed by the supported J2EE application server (JBoss application server, BEA WebLogic, and IBM WebSphere). The Java Data Objects implement the business logic of the Oracle Identity Manager application, however, they are not exposed to any methods from the outside world. Therefore, to access the business functionality of Oracle Identity Manager, you can use the API layer within the J2EE infrastructure, which provides the lookup and communication mechanism.
• Tier 3: Database: The third tier consists of the database. This is the layer that is responsible for managing the storage of data within Oracle Identity Manager.