Checking proxy subscription locations

A proxy subscription enables a publication to flow to a subscriber on a remote queue manager. If your subscribers are not getting messages that are published elsewhere in the queue manager network, check that your proxy subscriptions are where you expect them to be.

Missing proxy subscriptions can show that your application is not subscribing on the correct topic object or topic string, or that there is a problem with the topic definition, or that a channel is not running or is not configured correctly.

To show proxy subscriptions, use the following MQSC command:


display sub(*) subtype(proxy)

Proxy subscriptions are used in all distributed publish/subscribe topologies (hierarchies and clusters). For a topic host routed cluster topic, a proxy subscription exists on each topic hosts for that topic. For a direct routed cluster topic, the proxy subscription exists on every queue manager in the cluster. Proxy subscriptions can also be made to exist on every queue manager in the network by setting the proxysub(force) attribute on a topic.