This is the object name of the JMSProviderLoader MBean that the bridge will use to lookup the source connection factory and source destination.

By default JBoss AS ships with one JMSProviderLoader, deployed in the file jms-ds.xml - this is the default local JMSProviderLoader. (This would be in hajndi-jms-ds.xml in a clustered configuration)

If your source destination is on different servers or even correspond to a different, non JBoss JMS provider, then you can deploy another JMSProviderLoader MBean instance which references the remote JMS provider, and reference that from this attribute. The bridge would then use that remote JMS provider to contact the source destination

Note that if you are using a remote non JBoss Messaging source or target and you wish once and only once delivery then that remote JMS provider must provide a fully functional JMS XA resource implementation that works remotely from the server - it is known that some non JBoss JMS providers do not provide such a resource