Help with oci dll in PHP

A guy, Filippov Evgeny, mails directly to me with the following question. I answer in this group, to share the problem and the solution. Philippe S. From: evgeny ---------------------------------------------------------------- Hi! Excuse please, I have seen your answers and has decided(solved) that can be you to me will help. Server DB - serverORACLE 9.2. Web-server - Win XP, IIS 5.1, PHP 4.3.2, client ORACLE 9.2. environment variables oracle_sid=test1 oracle_home=c:\oracle\ora92 nls_lang=american_america.cl8mswin1251 tns_admin=c:\oracle\ora92\network\admin load php_oci8.dll oci8 OCI8 Support enableds Revision $Revision: 1.183.2.5$s db = " (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP) (HOST =192.168.1.9) (PORT=1521)) (CONNECT_DATA = (SERVICE_NAME=test1))) "; con=OCILogon ("test", "test", $db); Gives out a mistake Warning: ocilogon (): _oci_open_server: Error while trying to retrieve text for error ORA-12538 in c:\inetpub\wwwroot\php\index.php on line 15 How to establish oci connection? Filippov Evgeny