Thanks for reply. in -ds.xml we following db pool size | <min-pool-size>5</min-pool-size> | <max-pool-size>25</max-pool-size> | We have one connection per request? Is it sufficient ? Another question i have is how many threads we should set in BasicThreadPool? is it correlated with maxThreads in server.xml ? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4222767#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...