Shared queues and queue sharing groups

Shared queues and queue sharing groups

We can use shared queues and queue sharing groups, to implement high availability of IBM MQ resources. Shared queues and queue sharing groups are functions unique to IBM MQ for z/OS® on the z/OS platform.

This section describes the attributes and benefits, and offers information about how several queue managers can share the same queues and the messages on those queues.

What is a shared queue?
A shared queue is a type of local queue. The messages on that queue can be accessed by one or more queue managers that are in a sysplex.
What is a queue sharing group?
A group of queue managers that can access the same shared queues is called a queue sharing group. Each member of the queue sharing group has access to the same set of shared queues.
Where are shared queue messages held?
Each message on a shared queue is represented by an entry in a z/OS coupling facility list structure. If the message data is too large to fit in the same entry, it is offloaded either to a shared message data set (SMDS) or to Db2®.
Distributed queuing and queue sharing groups
Distributed queuing and queue sharing groups are two techniques that we can use to increase the availability of our application systems. Use this topic to find further information about these techniques.
Influencing workload distribution with shared queues
Use this topic to understand the factors that affect workload distribution with shared queues in a queue sharing group.
Where to find more information about shared queues and queue sharing groups
Use the table in this topic to find more information about how IBM MQ for z/OS uses shared queues and queue sharing groups.
Parent topic: IBM MQ for z/OS concepts

Related concepts

What is a shared queue?
What is a queue sharing group?
Where are shared queue messages held?
Advantages of using shared queues
Distributed queuing and queue sharing groups
Influencing workload distribution with shared queues

Related reference

Where to find more information about shared queues and queue sharing groups