If you do: truss tnsping some_connect_string You should be able to see which order the various config files are searched in. -Mark -- Mark J. Bobak Senior Database Administrator, System & Product Technologies ProQuest 789 E. Eisenhower, Parkway, P.O. Box 1346 Ann Arbor MI 48106-1346 +1.734.997.4059 or +1.800.521.0600 x 4059 mark.bobak@xxxxxxxxxxxxxxx <mailto:mark.bobak@xxxxxxxxxxxxxxx> www.proquest.com <http://www.proquest.com> www.csa.com <http://www.csa.com> ProQuest...Start here. From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Kerber, Andrew W. Sent: Monday, August 20, 2007 2:30 PM To: jkstill@xxxxxxxxx; cjnewman@xxxxxxxx Cc: oracle-l@xxxxxxxxxxxxx Subject: RE: sqlnet.ora problem I am not sure when it checks for .sqlnet.ora, though I have been told its in the sequence. Here are the other places I know it checks (in no particular order): $ORACLE_HOME/network/admin/sqlnet.ora $TNS_ADMIN:sqlnet.ora /var/opt/oracle/sqlnet.ora -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Jared Still Sent: Monday, August 20, 2007 12:12 PM To: cjnewman@xxxxxxxx Cc: oracle-l@xxxxxxxxxxxxx Subject: Re: sqlnet.ora problem On 8/18/07, Chris Newman <cjnewman@xxxxxxxx> wrote: Hello, Running 10.2.0.3 on Solaris 10, 64bit. I'm attempting to implement tcp.validnode_checking. It appears however that my sqlnet.ora file is *not* being read. Is there a $HOME/.sqlnet.ora ? -- Jared Still Certifiable Oracle DBA and Part Time Perl Evangelist ------------------------------------------------------------------------ ------ NOTICE: This electronic mail message and any attached files are confidential. The information is exclusively for the use of the individual or entity intended as the recipient. If you are not the intended recipient, any use, copying, printing, reviewing, retention, disclosure, distribution or forwarding of the message or any attached file is not authorized and is strictly prohibited. If you have received this electronic mail message in error, please advise the sender by reply electronic mail immediately and permanently delete the original transmission, any attachments and any copies of this message from your computer system. Thank you. ======================================================================== ======