Oracle Portal Process Failures Oracle Portal Node Failures Oracle Portal WebLogic Managed Server Failures Oracle Portal Protection from Database Failures

14-10 Oracle Fusion Middleware High Availability Guide Finally, a load balancer front ends the Oracle Web Cache instances to provide a single virtual access point to Oracle Portal. Besides load balancing external traffic coming from the browser, the load balancer also provides load balancing for internal traffic generated by Oracle Portal referred to as Portal Loopback Requests. The load balancer also provides load balancing of invalidation messages generated from the Portal metadata repository. Such invalidation requests are sent to Oracle Web Cache to invalidate any stale content cached in Oracle Web Cache. The clustering feature in Oracle Web Cache ensures cache consistency across the Oracle Web Cache instances.

14.2.2.1 Oracle Portal Process Failures

Due to redundancy in each component, if a particular process goes down, Oracle Portal continues to work. Note that Oracle Portal does not attempt to retry a request. Therefore, if a failure occurs while processing a particular request, that request fails.

14.2.2.2 Oracle Portal Node Failures

For information about Oracle Portal Node failure, see Section 14.1.3.2, Common Component Node Failures.

14.2.2.3 Oracle Portal WebLogic Managed Server Failures

For information about Oracle Portal WebLogic Managed Server failure, see Section 14.1.3.3, Common Component WebLogic Managed Server Failures.

14.2.2.4 Oracle Portal Protection from Database Failures

For information about Oracle Portal database failure, see Section 14.1.3.4, Common Component Database Failures.

14.3 Oracle Reports and High Availability Concepts

This section describes single-instance information, as well as high availability concepts specific to Oracle Reports. This section guides you through the concepts and considerations necessary for creating a successful high availability Oracle Reports deployment.

14.3.1 Oracle Reports Single-Instance Characteristics

Oracle Reports Services is the reports publishing component for Oracle Fusion Middleware. It is an enterprise reporting service for producing high quality production reports that dynamically retrieve, format, and distribute any data, in any format, anywhere. Oracle Reports Services can be used to publish in both Web-based and non-Web-based environments. The following components are specific to Oracle Reports: Oracle Reports Server The Reports Server rwserver processes client requests, including ushering them through its various services, such as authentication and authorization checking, scheduling, caching, and distribution including distribution to custom-or Note: If you are deploying your own producers, ensure that there is redundancy for the Producers and the producers are front-ended by a load balancer. This step ensures that there is no single-point of failure in the system.