diff --git a/lib/Doctrine/Connection/Informix.php b/lib/Doctrine/Connection/Informix.php
index 0ec36fd6f..4266920e9 100644
--- a/lib/Doctrine/Connection/Informix.php
+++ b/lib/Doctrine/Connection/Informix.php
@@ -31,4 +31,15 @@ class Doctrine_Connection_Informix extends Doctrine_Connection {
      * @var string $driverName                  the name of this connection driver
      */
     protected $driverName = 'Informix';
+    /**
+     * the constructor
+     *
+     * @param Doctrine_Manager $manager
+     * @param PDO $pdo                          database handle
+     */
+    public function __construct(Doctrine_Manager $manager, PDO $pdo) {
+        // initialize all driver options
+
+        parent::__construct($manager, $pdo);
+    }
 }
diff --git a/lib/Doctrine/Connection/Mssql.php b/lib/Doctrine/Connection/Mssql.php
index f36d4b45e..070805113 100644
--- a/lib/Doctrine/Connection/Mssql.php
+++ b/lib/Doctrine/Connection/Mssql.php
@@ -30,11 +30,23 @@ class Doctrine_Connection_Mssql extends Doctrine_Connection {
     /**
      * @var string $driverName                  the name of this connection driver
      */
-    protected $driverName = 'Mssql';    
+    protected $driverName = 'Mssql';
+    /**
+     * the constructor
+     *
+     * @param Doctrine_Manager $manager
+     * @param PDO $pdo                          database handle
+     */
+    public function __construct(Doctrine_Manager $manager, PDO $pdo) {
+        // initialize all driver options
+
+        parent::__construct($manager, $pdo);
+    }
     /**
      * returns the next value in the given sequence
-     * @param string $sequence
-     * @return integer
+     *
+     * @param string $sequence      name of the sequence
+     * @return integer              the next value in the given sequence
      */
     public function getNextID($sequence) {
         $this->query("INSERT INTO $sequence (vapor) VALUES (0)");
diff --git a/lib/Doctrine/Connection/Pgsql.php b/lib/Doctrine/Connection/Pgsql.php
index d7332d47e..62ae4987a 100644
--- a/lib/Doctrine/Connection/Pgsql.php
+++ b/lib/Doctrine/Connection/Pgsql.php
@@ -31,6 +31,17 @@ class Doctrine_Connection_Pgsql extends Doctrine_Connection_Common {
      * @var string $driverName                  the name of this connection driver
      */
     protected $driverName = 'Pgsql';
+    /**
+     * the constructor
+     *
+     * @param Doctrine_Manager $manager
+     * @param PDO $pdo                          database handle
+     */
+    public function __construct(Doctrine_Manager $manager, PDO $pdo) {
+        // initialize all driver options
+
+        parent::__construct($manager, $pdo);
+    }
     /**
      * returns the next value in the given sequence
      * @param string $sequence