Be careful here. There is a new feature in Oracle 11 concerning failed logins. MOS is not responding right now but http://askdba.org/weblog/2012/01/11g-multiple-failed-login-attempt-can-block-new-application-connections/ explains it adequately. It can be a real pain. There is a patch to turn off the behavior. I think the number is 13696216, but I cannot verify that now. Ian A. MacGregor SLAC National Accelerator Laboratory ________________________________________ From: oracle-l-bounce@xxxxxxxxxxxxx [oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Peter Hitchman [pjhoraclel@xxxxxxxxx] Sent: Thursday, April 11, 2013 3:04 AM To: oracle-l Subject: Re: account locking up Hi You could also change the profile being used to allow unlimited failed_login_attempts, to stop what is in effect a denial of service situation. Regards Pete ç\-- //www.freelists.org/webpage/oracle-l