Error when connecting PHP on linux with oracle9i

Question

the error that presents/displays to me is the following one
Warning: ocilogon(): ociopen_server: Error while trying to retrieve text for error ORA-12154 in /var/www/html/oci8test.php on line 3
rethat 2.1 AS, PHP-3.4.3 y apache 1.3.28
Help

Answer 1

The oracle error ORA-12154 is a "TNS:could not resolve service name" error. This is what I get when I type oerr ora 12154:
// *Action:  Make the following checks and correct the error:
// - Verify that a TNSNAMES.ORA file exists and is in the proper
// place and accessible. See the operating system specific manual
// for details on the required name and location.
// - Check to see that the service name exists in one of the
// TNSNAMES.ORA files and add it if necessary.
// - Make sure there are no syntax errors anywhere in the file.
// Particularly look for unmatched parentheses or stray characters.
// Any error in a TNSNAMES.ORA file makes it unusable. See
// Chapter 4 in the SQL*Net V2 Administrator's Guide. If
// possible, regenerate the configuration files using the Oracle
// Network Manager.
Hope this helps.