This figure shows an Internet cloud at the top of the figure. Requests from the Internet are routed to the hardware load balancer that is in front of WEBHOST1 and WEBHOST2 in the web tier, and the load balancer routes the requests it receives to WEBHOST1 and WEBHOST2. Both WEBHOST1 and WEBHOST2 have Oracle HTTP Server installed on them. A firewall separates the web tier and the application tier.
The application tier includes BAMHOST1 and BAMHOST2. WLS_BAM1, the BAM Web Apps, and the BAM Server are installed on BAMHOST1. VIP1 has been configured on BAMHOST1. WLS_BAM2 and the BAM Web Apps are installed on BAMHOST2. When a Server Migration Failover occurs on BAMHOST1, then WLS_BAM1, the BAM Web Apps, and the BAM Server will be migrated to BAMHOST2 and will run there after the failover.
BAMHOST1 has an active WebLogic Administration Server and VIP0. When a failure occurs, then the WebLogic Administration Server on BAMHOST2 must be manually started to complete the failover of BAMHOST1 to BAMHOST2. A firewall separates the application tier and the data tier.
An Oracle RAC database that includes BAM data appears in the data tier.