protected function createCacheTables()
{
$this->connect();
try {
PdoHelper::importSql($this->databaseHandle, $this->pdoDriver, __DIR__ . '/../../Resources/Private/DDL.sql');
} catch (\PDOException $exception) {
throw new Exception('Could not create cache tables with DSN "' . $this->dataSourceName . '". PDO error: ' . $exception->getMessage(), 1259576985);
}
}