Effects of queue attributes

Queue attribute can be set on all queue definitions. They not only affect the way messages are stored one the queues in question but also affect the way messages are transmitted over communication channels. WebSphere MQ Everyplace creates security attributes internally based on target queue attributes. The actual effect they have depends upon the kind of queue definition the queue attributes are involved:

Local queue
Determines how the data is stored and whether the incoming channel characteristics are acceptable. If an authenticator is specified, an authentication process using this authenticator occurs when the queue is accessed for the first time by any particular instance of a local queue manager.

Remote queue
Determines how the data is stored pending transmission, if applicable, and how the outgoing channel is established. If an authenticator is specified, an authentication process using this authenticator occurs whenever a new channel for transmitting messages on the queue is created.

Store-and-forward queue
Determines how the data is stored pending transmission, whether the incoming channel characteristics are acceptable, and how the outgoing channel is established, if applicable. An authenticator on a store-and-forward queue has the same effect that it has on a remote queue.

Home server queue
Determines how the outgoing channel is established. An authenticator on a home-server queue has the same effect that it has on a remote queue.


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