Types of message queues

The system has different types of message queues: workstation message queue, user profile message queue, job message queue, system operator message queue, and history log message queue.

The following figures show the message queues supplied by IBM. A message queue is supplied for each display station (where DSP01 and DSP02 are display station names) and each user profile (where BOB and RAY are user profile names).

The following figures show the message queues supplied by IBM.

Job message queues are supplied for each job running on the system. Each job is given an external message queue (*EXT) and each call of an original program model (OPM) program or Integrated Language Environment® (ILE) procedure within the job has its own call message queue.

Job message queues are supplied for each job running on the system.

Message queues are also supplied for the system history log (QHST) and the system operator (QSYSOPR).

Message queues are also supplied for the system history log (QHST) and the system operator (QSYSOPR).

These message queues are used as follows:

In addition to these message queues, you can create your own user message queues for sending messages to system users and between application programs.