My challenge is that my developers have legitimate reasons to sometimes connect with a personal userid (which I would like to make NTS-based) and other times as a schema owner or application userid (which would NOT be NTS-based). The suggestion that I'm looking at the wrong SQLNET.ORA file is a good one, I need to verify that. The link you posted mentions a possible value ALL; anybody have experience using that setting? Thanks! Martin -------------------------------------------- Martin Herbener 502 564 2020 ext 254 Office of Education Technology Kentucky Department of Education From: Allen, Brandon [mailto:Brandon.Allen@xxxxxxxxxxx] Sent: Wednesday, March 24, 2010 2:24 PM To: Herbener, Martin - KETS Engineering and ManagementSubject: RE: NTS/NONE and ORA-12631 I believe it should be set to only one option, either NTS or none, not both. They are mutually exclusive. From the docs: http://download.oracle.com/docs/cd/B19306_01/network.102/b14213/sqlnet.h tm#sthref443 "it is recommended that this parameter be set to either none or to one of the authentication methods" If it's working that way on some systems, it may be that they're actually using a different sqlnet.ora file than the one you think they're using, e.g. in their TNS_ADMIN directory. Regards, Brandon ________________________________ Privileged/Confidential Information may be contained in this message or attachments hereto. Please advise immediately if you or your employer do not consent to Internet email for messages of this kind. Opinions, conclusions and other information in this message that do not relate to the official business of this company shall be understood as neither given nor endorsed by it.