Cannot run Drupal update.php with Oracle Driver.

Hi,

I'm trying to run drupal/update.php with the Oracle driver installed. However there is a problem with the update scripts which shows an error like:

A PDO database driver is required!

You need to enable the PDO_ORACLE database driver for PHP 5.2.4 or higher so that Drupal 7 can access the database.

See the system requirements page for more information.

I have looked in the code for the reason of this error as the install.php worked without any problem at all. In the includes/update.inc, line 130 there is this:

//Some more code here...
elseif (isset($databases['default']['default']['driver']) && !in_array($databases['default']['default']['driver'], PDO::getAvailableDrivers())) {
    $message = '<h2>A PDO database driver is required!</h2><p>You need to enable the PDO_' . strtoupper($databases['default']['default']['driver']) . ' database driver for PHP ' . DRUPAL_MINIMUM_PHP . ' or higher so that Drupal 7 can access the database.</p>';
  }
  if ($message) {
    print $message . '<p>See the <a href="' . $pdo_link . '">system requirements page</a> for more information.</p>';
    exit();
  }

The cause of the problem is this check, where PDO's Oracle driver is called PDO_OCI, while the driver name defined in the settings.php is "oracle". Changing the driver name from "oracle" to "oci" did not helped at all (I don't know if changing the folder's name might help or not, I did not tried that).

Silencing these lines:

    print $message . '<p>See the <a href="' . $pdo_link . '">system requirements page</a> for more information.</p>';
    exit();

will prevent the errors and updating mechanism will work flawlessly (considering updates work without problems).

I don't know how this check can be bypassed other then a direct patch as I haven't seen any hooks etc, in the code around.