There are cases where you need to run your Oracle Identity and Access Management 11g Release 2 (11.1.2) software with previous versions of Oracle Fusion Middleware products.
The following sections provide some specific compatibility issues and considerations between Oracle Fusion Middleware 11g and Oracle Application Server 10g:
If you plan to upgrade your Oracle Identity and Access Management products to 11g Release 2 (11.1.2), be sure to verify that your existing Oracle Fusion Middleware 11g Release 1 products are certified to work with 11g Release 2 (11.1.2).
For more information, see Section 1.4.3, "Using Oracle Certification Matrices".
As described in the Oracle Fusion Middleware Upgrade Guide for Oracle Identity and Access Management, you can upgrade from selected pre-11g Identity Management products to specific Oracle Identity and Access Management 11g Release 2 (11.1.2) products. This upgrade process is referred to as a migration from one release to another.
For more information, see the Oracle Fusion Middleware Migration Guide for Oracle Identity and Access Management:
When you migrate from these selected pre-11g products, you might have to use a phased approach, where not all the products are upgraded at the same time. In these scenarios, you might have to run both the existing pre-11g products with some newly upgraded 11g Release 2 (11.1.2) products.
In most cases, Oracle supports these interim co-existence scenarios, but some configuration and post-migration steps are required to ensure the two versions are compatible and can run in the same environment.
For more information, see Part III, "Coexistence Scenarios" in the Oracle Fusion Middleware Migration Guide for Oracle Identity and Access Management.