PDO plus extends PDO to allow you to see all your executed queries. It also includes a Bar Panel for Tracy, see the result below.
Install it via composer:
composer require filisko/pdo-plus
In this example we are using two different PDO instances just to show that it's doable.
// Create an instance using PDO plus
$pdoConnection1 = new \Filisko\PDOplus\PDO('mysql:host=127.0.0.1;dbname=my_db', 'my_user', 'my_pass');
$pdoConnection2 = new \Filisko\PDOplus\PDO('mysql:host=127.0.0.1;dbname=my_other_db', 'my_user', 'my_pass');
// ... our PDO queries ...
// Dump all our executed queries of PDO connection 1
var_dump($pdoConnection1->getLog());
// Instance for Tracy BarPanel for connection 1
$db1Panel = new \Filisko\PDOplus\Tracy\BarPanel($pdoConnection1);
$db1Panel->title = "DB 1 Panel";
// Instance for Tracy BarPanel for connection 2
$db2Panel = new \Filisko\PDOplus\Tracy\BarPanel($pdoConnection2);
$db2Panel->title = "DB 2 Panel";
// Add panels to Tracy Bar
\Tracy\Debugger::getBar()->addPanel($db1Panel);
\Tracy\Debugger::getBar()->addPanel($db2Panel);