Message Queue (MSGQ) in AS400

Message Queue (MSGQ) in AS400

Message Queue

All messages on the AS400 system are sent to the message queue (MSGQ). The user or the program associated with the message queue (MSGQ) receives the message from the message queue (MSGQ).

Once the message is received in the MSGQ, a reply to the corresponding message is sent back to the message queue of the user or the program that requested the reply.

Types of message queues

The AS400 system has different types of message queues which are described as follows:

1. Workstation Message Queue
2. User Profile Message Queue
3. Job Message Queue
4. System Operator Message Queue
5. History Log Message Queue

Workstation Message Queue

Please read about workstation message queue from the following link.

Workstation Message Queue in AS400

User Profile Message Queue

Please read about User Profile message queue from the following link.

User Profile Message Queue in AS400

Job Message Queue

Please read about Job message queue from the following link.

Job Message Queue in AS400

System Operator Message Queue

Please read about System Operator(QSYSOPR) message queue from the following link.

System operator(QSYSOPR) Message Queue in AS400

History Log(QHST) Message Queue

Please read about History Log(QHST) message queue from the following link.

History Log(QHST) Message Queue in AS400

Create and Manage your own Message Queue (MSGQ)

Please read about Create and Manage your own Message Queue (MSGQ) from the following link.

Create and Manage your own Message Queue (MSGQ) in AS400

Points to remember for different types of message queues(MSGQ)

Each workstation has its own message queue(MSGQ).

Each user profile has its own message queue(MSGQ).

Each job running on the system has its own message queue(MSGQ). Each job is provided with an external message queue (*EX) MSGQ 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.

System Operator Message Queue is provided to the system operator (QSYSOPR).

History Log Message Queue is provided to the system history log (QHST)