Hi, I am trying to remove Hypersonic as the backbone for the JBossMQ and replace it with Derby. Using the "Changing the database used by JBossMQ" found at (http://wiki.jboss.org/wiki/Wiki.jsp?page=ConfigJBossMQDB), with no luck. Getting confused about the 'deploy' catalog and the 'deploy-hasingleton' catalog for jms configuration. Why is the jms configuration is the 'deploy-hasingleton' and can I change that to the 'deploy' catalog? When setting up Derby there is files missing for the MBean DerbyDatabase in the sample Derby-DS.xml found in the sample directory. I downloaded JBoss source and to built it, found a derby-plugin.jar this contains the missing DerbyDatabase and I think the Derby-DS.xml is all set now. Is there a successful JBossMQ + Derby database configuration out there? Thanks in advance View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3970830#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...