Solving problems with cluster channels

If we have a build up of messages on the SYSTEM.CLUSTER.TRANSMIT.QUEUE queue, the first step in diagnosing the problem is discovering which channel, or channels, are having a problem delivering messages.

About this task

To discover which channel, or channels, using the SYSTEM.CLUSTER.TRANSMIT.QUEUE are having a problem delivering messages. Perform the following checks:

Procedure

1. Issue the following command:

   DIS CHSTATUS(*) WHERE(XQMSGSA GT 1)
   

   Note: If we have a busy cluster that has many messages moving, consider issuing this command with a higher number to eliminate the channels that have only a few messages available to deliver.
2. Look through the output for the channel, or channels, that have large values in the field XQMSGSA. Determine why the channel is not moving messages, or is not moving them fast enough. Use the tasks outlined in Monitor channels to diagnose the problems with the channels found to be causing the build up.

Parent topic: Monitor channels