Tail the listener log, and from another window do a 'lsnrctl status'. Then see how long it takes to show up in the listener log. Jeremiah Sent from my Verizon Wireless 4G LTE smartphone <div>-------- Original message --------</div><div>From: Jeff C <backseatdba@xxxxxxxxx> </div><div>Date:07/02/2014 10:18 AM (GMT-08:00) </div><div>To: oracle-l@xxxxxxxxxxxxx </div><div>Subject: listener overloaded? </div><div> </div>How can I determine when my listener is overloaded/too busy? I am starting to get intermittent tns ping alerts from EM, It is currently set to alert over 1000ms. Usually we are around 20ms. I haven't checked with the network guys yet. I also have on average 400-500 connections per minute. I am not sure what is considered too much Jeff