Introduction to the New Mainframe: z/VSE Basics

362 Introduction to the New Mainframe: z/VSE Basics

14.5.1 What is a queue manager?

The component of software that owns and manages queues is called a queue

manager (QM). In MQSeries, the message queue manager is called the MQM,

and it provides messaging services for applications, ensures that messages are

put in the correct queue, routes messages to other queue managers, and

processes messages through a common programming interface called the

Message Queue Interface (MQI).

The queue manager can retain messages for future processing in the event of

application or system outages. Messages are retained in a queue until a

successful completion response is received through the MQI.

There are similarities between queue managers and database manager ...