diff --git a/lib/Doctrine/Transaction.php b/lib/Doctrine/Transaction.php
index a8110bc9f..712ece4c3 100644
--- a/lib/Doctrine/Transaction.php
+++ b/lib/Doctrine/Transaction.php
@@ -222,7 +222,7 @@ class Doctrine_Transaction extends Doctrine_Connection_Module
 
                 if ( ! $event->skipOperation) {
                     try {
-                        $this->conn->getDbh()->beginTransaction();
+                        $this->_doBeginTransaction();
                     } catch (Exception $e) {
                         throw new Doctrine_Transaction_Exception($e->getMessage());
                     }
@@ -292,7 +292,7 @@ class Doctrine_Transaction extends Doctrine_Connection_Module
 
                     $listener->preTransactionCommit($event);
                     if ( ! $event->skipOperation) {
-                        $this->conn->getDbh()->commit();
+                        $this->_doCommit();
                     }
                     $listener->postTransactionCommit($event);
                 }
@@ -355,7 +355,7 @@ class Doctrine_Transaction extends Doctrine_Connection_Module
                 $this->_nestingLevel = 0;
                 $this->_internalNestingLevel = 0;
                 try {
-                    $this->conn->getDbh()->rollback();
+                    $this->_doRollback();
                 } catch (Exception $e) {
                     throw new Doctrine_Transaction_Exception($e->getMessage());
                 }
@@ -401,6 +401,30 @@ class Doctrine_Transaction extends Doctrine_Connection_Module
     {
         throw new Doctrine_Transaction_Exception('Savepoints not supported by this driver.');
     }
+    
+    /**
+     * Performs the rollback.
+     */
+    protected function _doRollback()
+    {
+        $this->conn->getDbh()->rollback();
+    }
+    
+    /**
+     * Performs the commit.
+     */
+    protected function _doCommit()
+    {
+        $this->conn->getDbh()->commit();
+    }
+    
+    /**
+     * Begins a database transaction.
+     */
+    protected function _doBeginTransaction()
+    {
+        $this->conn->getDbh()->beginTransaction();
+    }
 
     /**
      * removeSavePoints
diff --git a/lib/Doctrine/Transaction/Mssql.php b/lib/Doctrine/Transaction/Mssql.php
index d5a81bfef..66c25e95d 100644
--- a/lib/Doctrine/Transaction/Mssql.php
+++ b/lib/Doctrine/Transaction/Mssql.php
@@ -65,4 +65,28 @@ class Doctrine_Transaction_Mssql extends Doctrine_Transaction
 
         $this->conn->execute($query);
     }
+    
+    /**
+     * Performs the rollback.
+     */
+    protected function _doRollback()
+    {
+        $this->conn->getDbh()->exec('ROLLBACK TRANSACTION');
+    }
+    
+    /**
+     * Performs the commit.
+     */
+    protected function _doCommit()
+    {
+        $this->conn->getDbh()->exec('COMMIT TRANSACTION');
+    }
+    
+    /**
+     * Begins a database transaction.
+     */
+    protected function _doBeginTransaction()
+    {
+        $this->conn->getDbh()->exec('BEGIN TRANSACTION');
+    }
 }
\ No newline at end of file