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Configuring the ADO Client : Configuring Connection Failover and Client Load Balancing for the ADO Client : Using Client Load Balancing
 

Using Client Load Balancing

Client load balancing helps distribute new connections in your environment so that no one server is overwhelmed with connection requests. When client load balancing is enabled, the order in which primary and alternate database servers are tried is random. For example, let us suppose that client load balancing is enabled as shown in the following illustration:
When Client load balancing is enabled, the OpenAccess SDK servers are tried randomly. In this figure, OpenAccess SDK server B is tried, then server C, and finally server A.
First, OpenAccess SDK Server B is tried (1). Then, OpenAccess SDK Server C may be tried (2), followed by a connection attempt to OpenAccess SDK Server A (3). In contrast, if client load balancing were not enabled in this scenario, each OpenAccess SDK Server would be tried in sequential order, primary server first, then each alternate OpenAccess SDK Server based on its entry order in the alternate servers list.