Clebert - why have you added a new query: | SELECT_EXISTS_REF=SELECT MESSAGEID FROM JMS_MESSAGE_REFERENCE WHERE CHANNELID = ? AND MESSAGEID = ? | +SELECT_EXISTS_REF_MESSAGEID=SELECT MESSAGEID FROM JMS_MESSAGE_REFERENCE WHERE MESSAGEID = ? | There's one already there, please use that. You need the channel id anyway. Just query for the message id without specifying the channel id means nothing. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4012325#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...