Communication rate between the federated server and the data source

A low communication rate indicates slow network communication between the federated server and the data source.

The setting of the COMM_RATE server option determines the communication rate. The COMM_RATE represents the speed of the network connection between the data source server and the federated server. The rate is measured in megabytes per second. The default is 2 MBPS.

Lower communication rates encourage the query optimizer to reduce the number of messages sent to or from this data source. If the COMM_RATE server option is set to a very small number, the optimizer produces a query requiring minimal network traffic.