How can I minimize the volume of logging due to connection failure warnings during a database outage with JBoss EAP 6?

Issue

A high volume of messages like the below (perhaps, a few each second depending on application load), each followed by a lengthy stack trace, may be observed in the server log during a database outage:

4:16:52,305 WARN  [org.jboss.jca.core.connectionmanager.pool.strategy.OnePool] (Thread-131 (HornetQ-client-global-threads-804077561)) IJ000604: Throwable while attempting to get a new connection: null: javax.resource.ResourceException: Could not create connection

This occurs in spite of the fact that application code catches the exceptions raised by data source getConnection() calls.