diff --git a/src/Driver/IBMDB2/Connection.php b/src/Driver/IBMDB2/Connection.php
index 6655801dd89..80941fe16ca 100644
--- a/src/Driver/IBMDB2/Connection.php
+++ b/src/Driver/IBMDB2/Connection.php
@@ -2,9 +2,7 @@
 
 namespace Doctrine\DBAL\Driver\IBMDB2;
 
-use Doctrine\DBAL\Driver\Exception;
 use Doctrine\DBAL\Driver\IBMDB2\Exception\ConnectionError;
-use Doctrine\DBAL\Driver\IBMDB2\Exception\ConnectionFailed;
 use Doctrine\DBAL\Driver\IBMDB2\Exception\PrepareFailed;
 use Doctrine\DBAL\Driver\IBMDB2\Exception\StatementError;
 use Doctrine\DBAL\Driver\Result as ResultInterface;
@@ -17,12 +15,10 @@
 use function assert;
 use function db2_autocommit;
 use function db2_commit;
-use function db2_connect;
 use function db2_escape_string;
 use function db2_exec;
 use function db2_last_insert_id;
 use function db2_num_rows;
-use function db2_pconnect;
 use function db2_prepare;
 use function db2_rollback;
 use function db2_server_info;
@@ -35,33 +31,16 @@
 final class Connection implements ServerInfoAwareConnection
 {
     /** @var resource */
-    private $conn;
+    private $connection;
 
     /**
      * @internal The connection can be only instantiated by its driver.
      *
-     * @param array<string,mixed> $driverOptions
-     *
-     * @throws Exception
+     * @param resource $connection
      */
-    public function __construct(
-        string $database,
-        bool $persistent,
-        string $username,
-        string $password,
-        array $driverOptions = []
-    ) {
-        if ($persistent) {
-            $conn = db2_pconnect($database, $username, $password, $driverOptions);
-        } else {
-            $conn = db2_connect($database, $username, $password, $driverOptions);
-        }
-
-        if ($conn === false) {
-            throw ConnectionFailed::new();
-        }
-
-        $this->conn = $conn;
+    public function __construct($connection)
+    {
+        $this->connection = $connection;
     }
 
     /**
@@ -69,7 +48,7 @@ public function __construct(
      */
     public function getServerVersion()
     {
-        $serverInfo = db2_server_info($this->conn);
+        $serverInfo = db2_server_info($this->connection);
         assert($serverInfo instanceof stdClass);
 
         return $serverInfo->DBMS_VER;
@@ -77,7 +56,7 @@ public function getServerVersion()
 
     public function prepare(string $sql): DriverStatement
     {
-        $stmt = @db2_prepare($this->conn, $sql);
+        $stmt = @db2_prepare($this->connection, $sql);
 
         if ($stmt === false) {
             throw PrepareFailed::new(error_get_last());
@@ -107,7 +86,7 @@ public function quote($value, $type = ParameterType::STRING)
 
     public function exec(string $sql): int
     {
-        $stmt = @db2_exec($this->conn, $sql);
+        $stmt = @db2_exec($this->connection, $sql);
 
         if ($stmt === false) {
             throw StatementError::new();
@@ -129,7 +108,7 @@ public function lastInsertId($name = null)
             );
         }
 
-        return db2_last_insert_id($this->conn);
+        return db2_last_insert_id($this->connection);
     }
 
     /**
@@ -137,7 +116,7 @@ public function lastInsertId($name = null)
      */
     public function beginTransaction()
     {
-        $result = db2_autocommit($this->conn, DB2_AUTOCOMMIT_OFF);
+        $result = db2_autocommit($this->connection, DB2_AUTOCOMMIT_OFF);
         assert(is_bool($result));
 
         return $result;
@@ -148,11 +127,11 @@ public function beginTransaction()
      */
     public function commit()
     {
-        if (! db2_commit($this->conn)) {
-            throw ConnectionError::new($this->conn);
+        if (! db2_commit($this->connection)) {
+            throw ConnectionError::new($this->connection);
         }
 
-        $result = db2_autocommit($this->conn, DB2_AUTOCOMMIT_ON);
+        $result = db2_autocommit($this->connection, DB2_AUTOCOMMIT_ON);
         assert(is_bool($result));
 
         return $result;
@@ -163,11 +142,11 @@ public function commit()
      */
     public function rollBack()
     {
-        if (! db2_rollback($this->conn)) {
-            throw ConnectionError::new($this->conn);
+        if (! db2_rollback($this->connection)) {
+            throw ConnectionError::new($this->connection);
         }
 
-        $result = db2_autocommit($this->conn, DB2_AUTOCOMMIT_ON);
+        $result = db2_autocommit($this->connection, DB2_AUTOCOMMIT_ON);
         assert(is_bool($result));
 
         return $result;
diff --git a/src/Driver/IBMDB2/Driver.php b/src/Driver/IBMDB2/Driver.php
index c08165520de..621ebf05ff2 100644
--- a/src/Driver/IBMDB2/Driver.php
+++ b/src/Driver/IBMDB2/Driver.php
@@ -3,6 +3,7 @@
 namespace Doctrine\DBAL\Driver\IBMDB2;
 
 use Doctrine\DBAL\Driver\AbstractDB2Driver;
+use Doctrine\DBAL\Driver\IBMDB2\Exception\ConnectionFailed;
 
 final class Driver extends AbstractDB2Driver
 {
@@ -13,12 +14,22 @@ final class Driver extends AbstractDB2Driver
      */
     public function connect(array $params)
     {
-        return new Connection(
-            DataSourceName::fromConnectionParameters($params)->toString(),
-            isset($params['persistent']) && $params['persistent'] === true,
-            $params['user'] ?? '',
-            $params['password'] ?? '',
-            $params['driverOptions'] ?? []
-        );
+        $dataSourceName = DataSourceName::fromConnectionParameters($params)->toString();
+
+        $username      = $params['user'] ?? '';
+        $password      = $params['password'] ?? '';
+        $driverOptions = $params['driverOptions'] ?? [];
+
+        if (! empty($params['persistent'])) {
+            $connection = db2_pconnect($dataSourceName, $username, $password, $driverOptions);
+        } else {
+            $connection = db2_connect($dataSourceName, $username, $password, $driverOptions);
+        }
+
+        if ($connection === false) {
+            throw ConnectionFailed::new();
+        }
+
+        return new Connection($connection);
     }
 }
diff --git a/src/Driver/Mysqli/Connection.php b/src/Driver/Mysqli/Connection.php
index dd269b0280f..f6d41a71029 100644
--- a/src/Driver/Mysqli/Connection.php
+++ b/src/Driver/Mysqli/Connection.php
@@ -2,9 +2,7 @@
 
 namespace Doctrine\DBAL\Driver\Mysqli;
 
-use Doctrine\DBAL\Driver\Exception;
 use Doctrine\DBAL\Driver\Mysqli\Exception\ConnectionError;
-use Doctrine\DBAL\Driver\Mysqli\Exception\ConnectionFailed;
 use Doctrine\DBAL\Driver\Result as ResultInterface;
 use Doctrine\DBAL\Driver\ServerInfoAwareConnection;
 use Doctrine\DBAL\Driver\Statement as DriverStatement;
@@ -24,48 +22,14 @@ final class Connection implements ServerInfoAwareConnection
     public const OPTION_FLAGS = 'flags';
 
     /** @var mysqli */
-    private $conn;
+    private $connection;
 
     /**
      * @internal The connection can be only instantiated by its driver.
-     *
-     * @param iterable<Initializer> $preInitializers
-     * @param iterable<Initializer> $postInitializers
-     *
-     * @throws Exception
      */
-    public function __construct(
-        ?string $host = null,
-        ?string $username = null,
-        ?string $password = null,
-        ?string $database = null,
-        ?int $port = null,
-        ?string $socket = null,
-        int $flags = 0,
-        iterable $preInitializers = [],
-        iterable $postInitializers = []
-    ) {
-        $connection = new mysqli();
-
-        foreach ($preInitializers as $initializer) {
-            $initializer->initialize($connection);
-        }
-
-        try {
-            $success = @$connection->real_connect($host, $username, $password, $database, $port, $socket, $flags);
-        } catch (mysqli_sql_exception $e) {
-            throw ConnectionFailed::upcast($e);
-        }
-
-        if (! $success) {
-            throw ConnectionFailed::new($connection);
-        }
-
-        foreach ($postInitializers as $initializer) {
-            $initializer->initialize($connection);
-        }
-
-        $this->conn = $connection;
+    public function __construct(mysqli $connection)
+    {
+        $this->connection = $connection;
     }
 
     /**
@@ -77,7 +41,7 @@ public function __construct(
      */
     public function getWrappedResourceHandle()
     {
-        return $this->conn;
+        return $this->connection;
     }
 
     /**
@@ -90,14 +54,14 @@ public function getWrappedResourceHandle()
      */
     public function getServerVersion()
     {
-        $serverInfos = $this->conn->get_server_info();
+        $serverInfos = $this->connection->get_server_info();
         if (stripos($serverInfos, 'mariadb') !== false) {
             return $serverInfos;
         }
 
-        $majorVersion = floor($this->conn->server_version / 10000);
-        $minorVersion = floor(($this->conn->server_version - $majorVersion * 10000) / 100);
-        $patchVersion = floor($this->conn->server_version - $majorVersion * 10000 - $minorVersion * 100);
+        $majorVersion = floor($this->connection->server_version / 10000);
+        $minorVersion = floor(($this->connection->server_version - $majorVersion * 10000) / 100);
+        $patchVersion = floor($this->connection->server_version - $majorVersion * 10000 - $minorVersion * 100);
 
         return $majorVersion . '.' . $minorVersion . '.' . $patchVersion;
     }
@@ -105,13 +69,13 @@ public function getServerVersion()
     public function prepare(string $sql): DriverStatement
     {
         try {
-            $stmt = $this->conn->prepare($sql);
+            $stmt = $this->connection->prepare($sql);
         } catch (mysqli_sql_exception $e) {
             throw ConnectionError::upcast($e);
         }
 
         if ($stmt === false) {
-            throw ConnectionError::new($this->conn);
+            throw ConnectionError::new($this->connection);
         }
 
         return new Statement($stmt);
@@ -127,22 +91,22 @@ public function query(string $sql): ResultInterface
      */
     public function quote($value, $type = ParameterType::STRING)
     {
-        return "'" . $this->conn->escape_string($value) . "'";
+        return "'" . $this->connection->escape_string($value) . "'";
     }
 
     public function exec(string $sql): int
     {
         try {
-            $result = $this->conn->query($sql);
+            $result = $this->connection->query($sql);
         } catch (mysqli_sql_exception $e) {
             throw ConnectionError::upcast($e);
         }
 
         if ($result === false) {
-            throw ConnectionError::new($this->conn);
+            throw ConnectionError::new($this->connection);
         }
 
-        return $this->conn->affected_rows;
+        return $this->connection->affected_rows;
     }
 
     /**
@@ -158,7 +122,7 @@ public function lastInsertId($name = null)
             );
         }
 
-        return $this->conn->insert_id;
+        return $this->connection->insert_id;
     }
 
     /**
@@ -166,7 +130,7 @@ public function lastInsertId($name = null)
      */
     public function beginTransaction()
     {
-        $this->conn->begin_transaction();
+        $this->connection->begin_transaction();
 
         return true;
     }
@@ -177,7 +141,7 @@ public function beginTransaction()
     public function commit()
     {
         try {
-            return $this->conn->commit();
+            return $this->connection->commit();
         } catch (mysqli_sql_exception $e) {
             return false;
         }
@@ -189,7 +153,7 @@ public function commit()
     public function rollBack()
     {
         try {
-            return $this->conn->rollback();
+            return $this->connection->rollback();
         } catch (mysqli_sql_exception $e) {
             return false;
         }
diff --git a/src/Driver/Mysqli/Driver.php b/src/Driver/Mysqli/Driver.php
index d459863d8a3..41a66a732b5 100644
--- a/src/Driver/Mysqli/Driver.php
+++ b/src/Driver/Mysqli/Driver.php
@@ -3,10 +3,13 @@
 namespace Doctrine\DBAL\Driver\Mysqli;
 
 use Doctrine\DBAL\Driver\AbstractMySQLDriver;
+use Doctrine\DBAL\Driver\Mysqli\Exception\ConnectionFailed;
 use Doctrine\DBAL\Driver\Mysqli\Exception\HostRequired;
 use Doctrine\DBAL\Driver\Mysqli\Initializer\Charset;
 use Doctrine\DBAL\Driver\Mysqli\Initializer\Options;
 use Doctrine\DBAL\Driver\Mysqli\Initializer\Secure;
+use mysqli;
+use mysqli_sql_exception;
 
 use function count;
 
@@ -47,17 +50,35 @@ public function connect(array $params)
         $preInitializers  = $this->withSecure($preInitializers, $params);
         $postInitializers = $this->withCharset($postInitializers, $params);
 
-        return new Connection(
-            $host,
-            $params['user'] ?? null,
-            $params['password'] ?? null,
-            $params['dbname'] ?? null,
-            $params['port'] ?? null,
-            $params['unix_socket'] ?? null,
-            $flags,
-            $preInitializers,
-            $postInitializers
-        );
+        $connection = new mysqli();
+
+        foreach ($preInitializers as $initializer) {
+            $initializer->initialize($connection);
+        }
+
+        try {
+            $success = @$connection->real_connect(
+                $host,
+                $params['user'] ?? null,
+                $params['password'] ?? null,
+                $params['dbname'] ?? null,
+                $params['port'] ?? null,
+                $params['unix_socket'] ?? null,
+                $flags
+            );
+        } catch (mysqli_sql_exception $e) {
+            throw ConnectionFailed::upcast($e);
+        }
+
+        if (! $success) {
+            throw ConnectionFailed::new($connection);
+        }
+
+        foreach ($postInitializers as $initializer) {
+            $initializer->initialize($connection);
+        }
+
+        return new Connection($connection);
     }
 
     /**
diff --git a/src/Driver/OCI8/Connection.php b/src/Driver/OCI8/Connection.php
index 12149e58129..67a5071706c 100644
--- a/src/Driver/OCI8/Connection.php
+++ b/src/Driver/OCI8/Connection.php
@@ -2,8 +2,6 @@
 
 namespace Doctrine\DBAL\Driver\OCI8;
 
-use Doctrine\DBAL\Driver\Exception;
-use Doctrine\DBAL\Driver\OCI8\Exception\ConnectionFailed;
 use Doctrine\DBAL\Driver\OCI8\Exception\Error;
 use Doctrine\DBAL\Driver\OCI8\Exception\SequenceDoesNotExist;
 use Doctrine\DBAL\Driver\Result as ResultInterface;
@@ -17,54 +15,27 @@
 use function is_float;
 use function is_int;
 use function oci_commit;
-use function oci_connect;
-use function oci_pconnect;
 use function oci_rollback;
 use function oci_server_version;
 use function preg_match;
 use function str_replace;
 
-use const OCI_NO_AUTO_COMMIT;
-
 final class Connection implements ServerInfoAwareConnection
 {
     /** @var resource */
-    protected $dbh;
+    protected $connection;
 
     /** @var ExecutionMode */
     private $executionMode;
 
     /**
-     * Creates a Connection to an Oracle Database using oci8 extension.
-     *
      * @internal The connection can be only instantiated by its driver.
      *
-     * @param string $username
-     * @param string $password
-     * @param string $db
-     * @param string $charset
-     * @param int    $sessionMode
-     * @param bool   $persistent
-     *
-     * @throws Exception
+     * @param resource $connection
      */
-    public function __construct(
-        $username,
-        $password,
-        $db,
-        $charset = '',
-        $sessionMode = OCI_NO_AUTO_COMMIT,
-        $persistent = false
-    ) {
-        $dbh = $persistent
-            ? @oci_pconnect($username, $password, $db, $charset, $sessionMode)
-            : @oci_connect($username, $password, $db, $charset, $sessionMode);
-
-        if ($dbh === false) {
-            throw ConnectionFailed::new();
-        }
-
-        $this->dbh           = $dbh;
+    public function __construct($connection)
+    {
+        $this->connection    = $connection;
         $this->executionMode = new ExecutionMode();
     }
 
@@ -73,10 +44,10 @@ public function __construct(
      */
     public function getServerVersion()
     {
-        $version = oci_server_version($this->dbh);
+        $version = oci_server_version($this->connection);
 
         if ($version === false) {
-            throw Error::new($this->dbh);
+            throw Error::new($this->connection);
         }
 
         assert(preg_match('/\s+(\d+\.\d+\.\d+\.\d+\.\d+)\s+/', $version, $matches) === 1);
@@ -86,7 +57,7 @@ public function getServerVersion()
 
     public function prepare(string $sql): DriverStatement
     {
-        return new Statement($this->dbh, $sql, $this->executionMode);
+        return new Statement($this->connection, $sql, $this->executionMode);
     }
 
     public function query(string $sql): ResultInterface
@@ -156,8 +127,8 @@ public function beginTransaction()
      */
     public function commit()
     {
-        if (! oci_commit($this->dbh)) {
-            throw Error::new($this->dbh);
+        if (! oci_commit($this->connection)) {
+            throw Error::new($this->connection);
         }
 
         $this->executionMode->enableAutoCommit();
@@ -170,8 +141,8 @@ public function commit()
      */
     public function rollBack()
     {
-        if (! oci_rollback($this->dbh)) {
-            throw Error::new($this->dbh);
+        if (! oci_rollback($this->connection)) {
+            throw Error::new($this->connection);
         }
 
         $this->executionMode->enableAutoCommit();
diff --git a/src/Driver/OCI8/Driver.php b/src/Driver/OCI8/Driver.php
index 351ffb87ae6..ac1419d55f2 100644
--- a/src/Driver/OCI8/Driver.php
+++ b/src/Driver/OCI8/Driver.php
@@ -3,6 +3,10 @@
 namespace Doctrine\DBAL\Driver\OCI8;
 
 use Doctrine\DBAL\Driver\AbstractOracleDriver;
+use Doctrine\DBAL\Driver\OCI8\Exception\ConnectionFailed;
+
+use function oci_connect;
+use function oci_pconnect;
 
 use const OCI_NO_AUTO_COMMIT;
 
@@ -18,14 +22,24 @@ final class Driver extends AbstractOracleDriver
      */
     public function connect(array $params)
     {
-        return new Connection(
-            $params['user'] ?? '',
-            $params['password'] ?? '',
-            $this->_constructDsn($params),
-            $params['charset'] ?? '',
-            $params['sessionMode'] ?? OCI_NO_AUTO_COMMIT,
-            $params['persistent'] ?? false
-        );
+        $username    = $params['user'] ?? '';
+        $password    = $params['password'] ?? '';
+        $charset     = $params['charset'] ?? '';
+        $sessionMode = $params['sessionMode'] ?? OCI_NO_AUTO_COMMIT;
+
+        $connectionString = $this->getEasyConnectString($params);
+
+        if (! empty($params['persistent'])) {
+            $connection = @oci_pconnect($username, $password, $connectionString, $charset, $sessionMode);
+        } else {
+            $connection = @oci_connect($username, $password, $connectionString, $charset, $sessionMode);
+        }
+
+        if ($connection === false) {
+            throw ConnectionFailed::new();
+        }
+
+        return new Connection($connection);
     }
 
     /**
diff --git a/src/Driver/SQLSrv/Connection.php b/src/Driver/SQLSrv/Connection.php
index b8f9f27b41d..2f6d2fda0a7 100644
--- a/src/Driver/SQLSrv/Connection.php
+++ b/src/Driver/SQLSrv/Connection.php
@@ -2,7 +2,6 @@
 
 namespace Doctrine\DBAL\Driver\SQLSrv;
 
-use Doctrine\DBAL\Driver\Exception;
 use Doctrine\DBAL\Driver\Result as ResultInterface;
 use Doctrine\DBAL\Driver\ServerInfoAwareConnection;
 use Doctrine\DBAL\Driver\SQLSrv\Exception\Error;
@@ -15,8 +14,6 @@
 use function sprintf;
 use function sqlsrv_begin_transaction;
 use function sqlsrv_commit;
-use function sqlsrv_configure;
-use function sqlsrv_connect;
 use function sqlsrv_query;
 use function sqlsrv_rollback;
 use function sqlsrv_rows_affected;
@@ -26,29 +23,16 @@
 final class Connection implements ServerInfoAwareConnection
 {
     /** @var resource */
-    protected $conn;
+    protected $connection;
 
     /**
      * @internal The connection can be only instantiated by its driver.
      *
-     * @param string  $serverName
-     * @param mixed[] $connectionOptions
-     *
-     * @throws Exception
+     * @param resource $connection
      */
-    public function __construct($serverName, $connectionOptions)
+    public function __construct($connection)
     {
-        if (! sqlsrv_configure('WarningsReturnAsErrors', 0)) {
-            throw Error::new();
-        }
-
-        $conn = sqlsrv_connect($serverName, $connectionOptions);
-
-        if ($conn === false) {
-            throw Error::new();
-        }
-
-        $this->conn = $conn;
+        $this->connection = $connection;
     }
 
     /**
@@ -56,14 +40,14 @@ public function __construct($serverName, $connectionOptions)
      */
     public function getServerVersion()
     {
-        $serverInfo = sqlsrv_server_info($this->conn);
+        $serverInfo = sqlsrv_server_info($this->connection);
 
         return $serverInfo['SQLServerVersion'];
     }
 
     public function prepare(string $sql): DriverStatement
     {
-        return new Statement($this->conn, $sql);
+        return new Statement($this->connection, $sql);
     }
 
     public function query(string $sql): ResultInterface
@@ -89,7 +73,7 @@ public function quote($value, $type = ParameterType::STRING)
 
     public function exec(string $sql): int
     {
-        $stmt = sqlsrv_query($this->conn, $sql);
+        $stmt = sqlsrv_query($this->connection, $sql);
 
         if ($stmt === false) {
             throw Error::new();
@@ -130,7 +114,7 @@ public function lastInsertId($name = null)
      */
     public function beginTransaction()
     {
-        if (! sqlsrv_begin_transaction($this->conn)) {
+        if (! sqlsrv_begin_transaction($this->connection)) {
             throw Error::new();
         }
 
@@ -142,7 +126,7 @@ public function beginTransaction()
      */
     public function commit()
     {
-        if (! sqlsrv_commit($this->conn)) {
+        if (! sqlsrv_commit($this->connection)) {
             throw Error::new();
         }
 
@@ -154,7 +138,7 @@ public function commit()
      */
     public function rollBack()
     {
-        if (! sqlsrv_rollback($this->conn)) {
+        if (! sqlsrv_rollback($this->connection)) {
             throw Error::new();
         }
 
diff --git a/src/Driver/SQLSrv/Driver.php b/src/Driver/SQLSrv/Driver.php
index efa9ccfe908..085b22412d3 100644
--- a/src/Driver/SQLSrv/Driver.php
+++ b/src/Driver/SQLSrv/Driver.php
@@ -4,6 +4,10 @@
 
 use Doctrine\DBAL\Driver\AbstractSQLServerDriver;
 use Doctrine\DBAL\Driver\AbstractSQLServerDriver\Exception\PortWithoutHost;
+use Doctrine\DBAL\Driver\SQLSrv\Exception\Error;
+
+use function sqlsrv_configure;
+use function sqlsrv_connect;
 
 /**
  * Driver for ext/sqlsrv.
@@ -51,6 +55,16 @@ public function connect(array $params)
             $driverOptions['ReturnDatesAsStrings'] = 1;
         }
 
-        return new Connection($serverName, $driverOptions);
+        if (! sqlsrv_configure('WarningsReturnAsErrors', 0)) {
+            throw Error::new();
+        }
+
+        $connection = sqlsrv_connect($serverName, $driverOptions);
+
+        if ($connection === false) {
+            throw Error::new();
+        }
+
+        return new Connection($connection);
     }
 }
diff --git a/tests/Functional/Driver/IBMDB2/ConnectionTest.php b/tests/Functional/Driver/IBMDB2/ConnectionTest.php
index 656032f2a33..a9e1479bfbe 100644
--- a/tests/Functional/Driver/IBMDB2/ConnectionTest.php
+++ b/tests/Functional/Driver/IBMDB2/ConnectionTest.php
@@ -2,8 +2,6 @@
 
 namespace Doctrine\DBAL\Tests\Functional\Driver\IBMDB2;
 
-use Doctrine\DBAL\Driver\IBMDB2\Connection;
-use Doctrine\DBAL\Driver\IBMDB2\Exception\ConnectionFailed;
 use Doctrine\DBAL\Driver\IBMDB2\Exception\PrepareFailed;
 use Doctrine\DBAL\Tests\FunctionalTestCase;
 use Doctrine\DBAL\Tests\TestUtil;
@@ -30,17 +28,11 @@ protected function tearDown(): void
         $this->markConnectionNotReusable();
     }
 
-    public function testConnectionFailure(): void
-    {
-        $this->expectException(ConnectionFailed::class);
-        new Connection('garbage', false, '', '');
-    }
-
     public function testPrepareFailure(): void
     {
         $driverConnection = $this->connection->getWrappedConnection();
 
-        $re = new ReflectionProperty($driverConnection, 'conn');
+        $re = new ReflectionProperty($driverConnection, 'connection');
         $re->setAccessible(true);
         $conn = $re->getValue($driverConnection);
         db2_close($conn);