Sun Java System Application Server Enterprise Edition 8.1 2005Q2 High Availability Administration Guide

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## Java Message Service Integration

MQ can be integrated with Application Server in two ways: LOCAL and REMOTE, represented in Admin Console by the Java Message Service Type attribute.

### LOCAL Java Message Service

When the Type attribute is LOCAL (the default for a stand-alone Application Server instances), the Application Server will start and stop the MQ broker specified as the Default JMS host. LOCAL type is most suitable for standalone Application Server instances.

To create a one-to-one relationship between Application Server instances and Message Queue brokers, set the type to LOCAL and give each Application Server instance a different default JMS host. You can do this regardless of whether clusters are defined in the Application Server or MQ.

With LOCAL type, use the Start Arguments attribute to specify MQ broker startup parameters.

### REMOTE Java Message Service

When the Type attribute is REMOTE, the MQ broker must be started separately. This is the default if clusters are defined in the Application Server. For information about starting the broker, see the Sun Java System Message Queue Administration Guide.

In this case, Application Server will use an externally configured broker or broker cluster. Also, you must start and stop MQ brokers separately from Application Server, and use MQ tools to configure and tune the broker or broker cluster. REMOTE type is most suitable for Application Server clusters.

With REMOTE type, you must specify MQ broker startup parameters using MQ tools. The Start Arguments attribute is ignored.

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