The figure shows a load balancer distributing requests to two nodes. Both nodes have an application server instance, Oracle BPEL Process Manager, and business process, but only node 1 has an activation agent to connect to the external resource (example: file systems, FTP servers). (These resources do not support concurrent access.) On node 2, the activation agent is disabled. Both nodes are connected to the same Real Application Clusters database for their dehydration store. The two nodes in the Real Application Clusters database use a shared storage.