Hi, Trying to port some stuff to 10.2 instant client, and getting an ORA-12705 in OCISessionBegin with NLS_LANG set to AMERICAN_AMERICA.WE8ISO8859P1, which appears to be a perfectly valid value. SQL*Plus from the same instant client home works fine. Using the 9i client works fine. Anyone have any ideas? Thanks, -Mark PS This is RedHat Linux, Enterprise Server 4 Update 3. -- 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.