anonymous wrote : I read on the Wiki that the JCA-managed connection factory caches connections, so is it ok to simply open and close a connection for each message ? It is okay if you use JmsXA which is the JCA adapter for JMS, but if you use a regular JMS Connection if you open/close your connection on every send you will have serious performance problems. I don't know any links.. (besides what you would find with a google search on wiki.jboss.org). But this caching thing is pretty much what I can think now as a best practice on Connections. I believe you will find a FAQ on JBM about Spring, as it produces messages by closing and opening a JMS connection on every send. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4159009#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...