Objects in IBM MQ Explorer

Objects in IBM MQ Explorer

In IBM MQ Explorer, all of the queue managers and their IBM MQ objects are organized in folders in the Navigator view.

We can perform the following tasks on many of the folders:

To view the objects, click the relevant folder and the objects that are in the folder are listed in the Content view.
To create new objects, right-click the folder.
To configure or delete an object, right-click the object.

For more information about administering queue managers and their objects, see the following topics.

Queue managers
A queue manager is a program that provides messaging services to applications. Applications that use the Message Queue Interface (MQI) can put messages on queues and get messages from queues. The queue manager ensures that messages are sent to the correct queue or are routed to another queue manager.
IBM MQ queues
A queue is a container for messages. Business applications that are connected to the queue manager that hosts the queue can retrieve messages from the queue or can put messages on the queue.
Topics
A topic identifies what a publication is about. A topic is a character string that describes the subject of the information that is published in a Publish/Subscribe message. As a subscriber, we can specify a topic or range of topics by using wildcards to receive the information that you require.
Cluster topics
Topics can be clustered in a similar manner to cluster queues, although an individual topic object can be a member of only one cluster. A topic is made into a cluster topic by defining, on the topic object, the name of the cluster that is to host the topic, and the cluster routing mechanism to use for publications on this topic.
Subscriptions
A subscription is a record that contains the information about the topic or topics that the subscriber is interested in and wants to receive information about. Thus, the subscription information determines which publications get forwarded to the subscriber. Subscribers can receive information from many different publishers, and the information they receive can also be sent to other subscribers.
Publications
Publications are messages that are sent by an application to the Publish/Subscribe Engine. The Publish/Subscribe Engine then sends the messages on to any applications that have subscribed to receive the messages.
Channels
IBM MQ can use three different types of channels: a message channel, an MQI channel, and an AMQP channel.
Listeners
A listener is an IBM MQ process that listens for connections to the queue manager.
Process definitions
A process definition contains information about the application that starts in response to a trigger event on a queue manager. When you enable triggering on a queue, we can create a process definition and associate it with the queue.
Namelists
A namelist is an IBM MQ object that contains a list of names of other objects.
Authentication information
Authentication information objects contain connection details of servers that can be used to determine revocation status certificates.
Communication information object
IBM MQ Multicast offers low latency, high fanout, reliable multicast messaging. A communication information (COMMINFO) object is needed to use Multicast transmission.
Trigger monitors
A trigger monitor is an application that processes the trigger messages that are put on initiation queues when a trigger event occurs.
Channel initiators
A channel initiator is an application that processes the trigger messages that are put on initiation queues when a trigger event occurs. A channel initiator is a special type of trigger monitor that starts channels rather than applications.
Custom services
Custom services are services that you create to run commands automatically.
Storage classes
Storage classes can exist only on z/OS® queue managers. A storage class maps one or more queues to a page set. This means that the messages on the queues are stored on the page set.
Queue sharing groups
Queue sharing groups exist only on z/OS queue managers. A queue sharing group is a group of queue managers that can access the same shared queues. Each member of the queue sharing group has access to the same set of shared queues.
Coupling facility structures
The coupling facility objects in IBM MQ Explorer represent coupling facility structures on a physical coupling facility. Coupling facility structures store the messages that are on shared queues. Each coupling facility structure used by IBM MQ is dedicated to a specific queue sharing group, but a coupling facility can hold structures for more than one queue sharing group.
Queue manager clusters
A cluster is a group of two or more queue managers that are logically associated and can share information with each other. Any queue manager can send a message to any other queue manager in the same cluster without you needing to set up a specific channel definition, remote queue definition, or transmission queue, because all of this information is held in the repository, to which all queue managers in the cluster have access.
Parent topic: Create and configure queue managers and objects

Related tasks

Configure queue managers and objects