Magento 2.0.18 is the final 2.0.x release. After March 2018, Magento 2.0.x will no longer receive security patches, quality fixes, or documentation updates.
To maintain your site's performance, security, and PCI compliance, upgrade to the latest version of Magento.

Configure the database profiler

About the database profiler

The Magento database profiler displays all queries executed on a page, including the time for each query and what parameters were executed.

Step 1: Modify the deployment configuration

Modify <your Magento install dir>/app/etc/env.php to add the following reference to the database profiler class:

        'profiler' => [
            'class' => '\Magento\Framework\DB\Profiler',
            'enabled' => true,

An example follows:

 'db' =>
  array (
    'table_prefix' => '',
    'connection' =>
    array (
      'default' =>
      array (
        'host' => 'localhost',
        'dbname' => 'magento',
        'username' => 'magento',
        'password' => 'magento',
        'model' => 'mysql4',
        'engine' => 'innodb',
        'initStatements' => 'SET NAMES utf8;',
        'active' => '1',
        'profiler' => [
            'class' => '\Magento\Framework\DB\Profiler',
            'enabled' => true,

Step 2: Configure the output

Configure the output in your Magento application boostrap file; this might be <your Magento install dir>/index.php or it could be located in a web server virtual host configuration.

The following example displays results in a three-column table:

  • Total time (displays the total amount of time to run all queries on the page)
  • SQL (displays all SQL queries; the row header displays the count of queries)
  • Query Params (displays the parameters for each SQL query)

To configure the output, add the following after the $bootstrap->run($app); line in your bootstrap file:

/** @var \Magento\Framework\App\ResourceConnection $res */
$res = \Magento\Framework\App\ObjectManager::getInstance()->get('Magento\Framework\App\ResourceConnection');
/** @var Magento\Framework\DB\Profiler $profiler */
$profiler = $res->getConnection('read')->getProfiler();
echo "<table cellpadding='0' cellspacing='0' border='1'>";
echo "<tr>";
echo "<th>Time <br/>[Total Time: ".$profiler->getTotalElapsedSecs()." secs]</th>";
echo "<th>SQL [Total: ".$profiler->getTotalNumQueries()." queries]</th>";
echo "<th>Query Params</th>";
echo "</tr>";
foreach ($profiler->getQueryProfiles() as $query) {
    /** @var Zend_Db_Profiler_Query $query*/
    echo '<tr>';
    echo '<td>', number_format(1000 * $query->getElapsedSecs(), 2), 'ms', '</td>';
    echo '<td>', $query->getQuery(), '</td>';
    echo '<td>', json_encode($query->getQueryParams()), '</td>';
    echo '</tr>';
echo "</table>";

Step 3: View the results

Go to any page in your storefront or Magento Admin to view the results. A sample follows:

Sample database profiler results