The JMS server talks to the database via JDBC, and c-jdbc basically is a JDBC compliant driver, so that should work. Re: which node writes to the database, clustered JBossMQ uses an HASingleton concept with failover of the JMS server. That is, the JMS server is only running on one node at a time; if that node fails the JMS server is started on another node. All nodes should be configured to work with the same underlying database. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3989735#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...