This figure shows a multi-server domain that contains two hosts: Host-1 and Host-2. Host-1 contains two Virtual Machines (VMs): ocep-server-1 and ocep-server-2. Host-2 contains two VMs: ocep-server-3 and ocep-server-4. Each VM contains the same Oracle CEP application: App1. Each instance of App1 is associated with a different Cluster Group: ocep-server-1 is associated with Cluster Group AcctIdGT400, ocep-server-2 is associated with Cluster Group AcctId301TO400, server-3 is associated with Cluster Group AcctId201TO300, and server-4 is associated with Cluster Group AcctIdLTE200. The same JMS topic is the input stream to each instance of App1. Each instance of App1 is associated with a JMS selector that corresponds to its Cluster Group: server-1 App1 uses selector acctid > 400, server-2 App1 uses selector acctid BETWEEN 301 AND 400, server-3 App1 uses selector acctid BETWEEN 201 AND 300, and server-4 App1 uses selector acctid <= 200.