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Heartbeat interval (HBINT)

 

We can specify the approximate time between heartbeat flows that are to be passed from a sending MCA when there are no messages on the transmission queue. Heartbeat flows unblock the receiving MCA, which is waiting for messages to arrive or for the disconnect interval to expire. When the receiving MCA is unblocked it can disconnect the channel without waiting for the disconnect interval to expire. Heartbeat flows also free any storage buffers that have been allocated for large messages and close any queues that have been left open at the receiving end of the channel.

The value is in seconds and must be in the range 0 through 999 999. A value of zero means that no heartbeat flows are to be sent. The default value is 300. To be most useful, the value should be significantly less than the disconnect interval value.

This attribute is valid for all channel types.

On server-connection and client-connection channels, heartbeats flow only when a server MCA is waiting on an MQGET command with the WAIT option which it has issued on behalf of a client application.

 

Parent topic:

Channel attributes in alphabetical order

ic11720_

 

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