The number of client channels increase over time and never decreases. Cause This occurs because the queue manager does not detect that the client has been disconnected, and therefore holds onto the transaction. Resolving the problem To ensure the queue manager detects when the client is no longer there, set a new property on the Channel Stanza named ClientIdle. This property is set to a value that is defined in seconds. Windows Use the following command: amqmdain reg -c add -s Channels -v ClientIdle= UNIX and iSeries Set in the QM.ini file using a new stanza, as follows: Channels: ClientIdle= Note: On all operating systems, you must restart the queue manager for the parameter to take effect . Additional information An explanation of the ClientIdle property from WebSphere MQ development: A brief descr