The listener receives client connections and evaluates against a set of rules whether to deny or allow access. If it allows access, the listener forwards a request to a gateway process, selecting the one with the fewest connections. The CMGW process, in turn, forwards the request to another Oracle Connection Manager or directly to the database server, relaying data until the connection terminates. If a connection to the server already exists, the gateway multiplexes, or funnels, its connections through the existing connection. CMADMIN monitors the health of the gateway processes and the listener, shutting down or starting up processes as.
