Load-Balancing EBS 12.2 Environments
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You can use load-balancing routers (LBR) to protect your E-Business Suite 12.2 environment from system failures. Load-balancers increase your environment's fault-tolerance and scalability by distributing load across a pool of servers. See:
HTTP Layer Load-Balancing
HTTP Layer load-balancing is the most common method used in E-Business Suite environments. In this configuration, end-users navigate to a specific Web Entry Point that represents your E-Business Suite's domain name. An HTTP Layer load-balancer routes all subsequent traffic for a specific user to a specific Web Node.
HTTP Layer load-balancers may use heartbeat checks for node death detection and restart, and sophisticated algorithms for load-balancing.