Can anyone shed some light on how I can fix the problem of getting ora-12538 error message? I have put the tnsnames.ora entry into the php script file and that got rid of ora-12541. But now I keep getting ora-12538. I have the following configuration. I can connect without any problem using sqlplus at the command prompt. Windows XP Oracle 9.2 PHP 4.3.2-RC1 (I have tried earlier versions also, but still no luck) Using php_oci8.dll PHP is set up as ISAPI although CGI did not work either. Exact error message: Warning: ocilogon() [function.ocilogon]: _oci_open_server: Error while trying to retrieve text for error ORA-12538 in c:\inetpub\wwwroot\oracle.php on line 20 Any help would be greatly appreciated. Thanks Ivan Drinks Sr. Reality Technology, Inc. ivan.sr@reality-technology.com -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php