The persistence manager of JBoss Messaging uses the default datasource to create tables to store messages, transaction data and other indexes. Configuration of "persistence" is grouped in xxx-persistence-service.xml files. JBoss Application Server ships with a default hsqldb-persistence-service.xml file, which configures the Messaging server to use the Hypersonic database instance that ships by default with the JBoss Application Server.

You can view the hsqldb-persistence-service.xml file in configurations based on the all or default configurations:

<JBoss_Home>/server/all/deploy/messaging/hsqldb-persistence-service.xml  and
			<JBoss_Home>/server/default/deploy/messaging/hsqldb-persistence-service.xml