Using the EAI MQSeries Server Transport on AIX

When you use the EAI MQSeries Server Transport on AIX, the shared memory segment required by the EAI MQSeries Server process can collide with the shared memory segment required by the queue manager. By default, the EAI MQSeries queue manager attempts to use shared memory segment number 8. The EAI MQSeries Server Transport does not rely on any specific number and uses whatever segment is given to the process by the AIX operating system.

However, if you are using the default configuration, then there is a possibility that the EAI MQSeries Server process gets segment number 8 from the operating system first, and as a result the queue manager cannot get its segment. In this case, the EAI MQSeries Server Transport service fails with an error code of 2059 because it cannot connect to the queue manager.