Sherrie, JDBC connections use a "thin" connection that does not require tns. It uses either the server name and sid/service name to connect to the database. Tom ________________________________ From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Sherrie.Kubis@xxxxxxxxxxxxxxxxxx Sent: Thursday, June 26, 2008 12:59 PM To: oracle-l@xxxxxxxxxxxxx Subject: Ports in listener.log Oracle 10.2.0.3 HP-UX I have a 10.2 listener listening on port 1522, and see connections established using that. However, I also see connections coming in on other ports, that look like the increment by 1 each time. The connections are coming from a .net application on a windows server through IIS, and that server does not have a tns entry in tnsnames.ora. We removed it from there to specifically prevent connections to this database. Anyone have any idea how this could be happening? ------------------------------------------------------------------------ Sherrie Kubis Oracle DBA Supervisor Information Resources Department Application Systems Section Southwest Florida Water Management District 352-796-7211 x4033 mailto:Sherrie.Kubis@xxxxxxxxxxxxxxxx http://www.watermatters.org ------------------------------------------------------------------------ - Good judgement comes from experience, and a lot of that comes from bad judgement. IMPORTANT NOTICE: All E-mail sent to or from this address are public record and archived. The Southwest Florida Water Management District does not allow use of District equipment and E-mail facilities for non-District business purposes.