TYPO3 Core

Hello TYPO3 team,

installing TYPO3 with an Oracle database (oci8) fails on certain points. After passing the credentials, the installation crashes with a fatal error:

PHP Fatal error: Call to a member function qstr() on a non-object in typo3/sysext/dbal/Classes/Database/DatabaseConnection.php on line 1882

At this point, $this->handlerInstance is an empty array. The property is filled in the method handler_init($handlerKey). As far as I understood the code, $cfgArray is a merged array from ['DB'] and ['EXTCONF']['dbal']['handlerCfg']['_DEFAULT'] as defined in LocalConfiguration.php. But under certain circumstances, the merge is not complete and the following condition matches, resulting an empty array:

if (!$cfgArray['config']['database']) {
    // Configuration is incomplete
    return;
}

When putting the DB configuration into the dbal configuration, the bug does not occur:

'EXTCONF' => array(
    'dbal' => array(
        'handlerCfg' => array(
            '_DEFAULT' => array(
                'config' => array(
                    'driver' => 'oci8',
                    'driverOptions' => array(
                        'connectSID' => '',
                    ),
                    'database' => 'typo3',
                    'host' => 'localhost:1521',
                    'password' => '*****',
                    'username' => 'johndoe',
                ),
                'type' => 'adodb',
            ),
        ),
    ),
),