anonymous wrote : I 'm still facing th "No ManagedConnections available within configured blocking timeout ( 60000 [ms] )" problem, funny, it just shows up with DB2 8 DBMS. | I am certain I have no pool leakin all my connections within my apps are closed and this is what I've got in my datasource. See these http://www.jboss.org/community/docs/DOC-12683 http://www.jboss.org/community/docs/DOC-9255 And are you sure the max-pool size (=100) connections is enough for your application at a given time? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4190927#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...