PHP 5.1.6

Notice: Use of undefined constant OCI_COMMIT_ON_SUCCESS - assumed 'OCI_COMMIT_ON_SUCCESS' in C:\itekchile\proyectos\siaweb_system\adodb\adodb.inc.php on line 2821

Fatal error: Call to undefined function OCILogon() in C:\itekchile\proyectos\siaweb_system\adodb\drivers\adodb-oci8.inc.php on line 129