diff --git a/Doctrine/DBAL/Driver/PDODblib/Connection.php b/Doctrine/DBAL/Driver/PDODblib/Connection.php
index 3e004d7..0713256 100644
--- a/Doctrine/DBAL/Driver/PDODblib/Connection.php
+++ b/Doctrine/DBAL/Driver/PDODblib/Connection.php
@@ -69,9 +69,9 @@ private function _pdoTransactionsSupported() {
      */
     public function rollback() {
         if ($this->_pdoTransactionsSupported() === true) {
-            parent::rollback();
-        } else {
             $this->exec('ROLLBACK TRANSACTION');
+        } else {
+            parent::rollback();
         }
     }
 
@@ -80,9 +80,9 @@ public function rollback() {
      */
     public function commit() {
         if ($this->_pdoTransactionsSupported() === true) {
-            parent::commit();
-        } else {
             $this->exec('COMMIT TRANSACTION');
+        } else {
+            parent::commit();
         }
     }
 
@@ -91,9 +91,9 @@ public function commit() {
      */
     public function beginTransaction() {
         if ($this->_pdoTransactionsSupported() === true) {
-            parent::beginTransaction();
-        } else {
             $this->exec('BEGIN TRANSACTION');
+        } else {
+            parent::beginTransaction();
         }
     }