IBM MQ and UNIX System V IPC resources

A queue manager uses some IPC resources. Use ipcs -a to find out what resources are being used.

This information applies to IBM MQ running on UNIX and Linux systems only.

IBM MQ uses System V interprocess communication (IPC) resources ( semaphores and shared memory segments ) to store and pass data between system components. These resources are used by queue manager processes and applications that connect to the queue manager. IBM MQ MQI clients do not use IPC resources, except for IBM MQ trace control. Use the UNIX command ipcs -a to get full information on the number and size of the IPC resources currently in use on the machine.