diff --git a/lib/Doctrine/Compiler.php b/lib/Doctrine/Compiler.php
index 58d7aa03b..751e17037 100644
--- a/lib/Doctrine/Compiler.php
+++ b/lib/Doctrine/Compiler.php
@@ -205,19 +205,12 @@ class Doctrine_Compiler
                                    'Sequence_Db2_Exception',
                                    'Sequence_Db2',
                                    'Sequence_Exception',
-                                   'Sequence_Firebird_Exception',
                                    'Sequence_Firebird',
-                                   'Sequence_Informix_Exception',
                                    'Sequence_Informix',
-                                   'Sequence_Mssql_Exception',
                                    'Sequence_Mssql',
-                                   'Sequence_Mysql_Exception',
                                    'Sequence_Mysql',
-                                   'Sequence_Oracle_Exception',
                                    'Sequence_Oracle',
-                                   'Sequence_Pgsql_Exception',
                                    'Sequence_Pgsql',
-                                   'Sequence_Sqlite_Exception',
                                    'Sequence_Sqlite',
                                    'Sequence',
                                    'Table_Exception',
@@ -225,19 +218,12 @@ class Doctrine_Compiler
                                    'Table_Repository',
                                    'Table',
                                    'Transaction_Exception',
-                                   'Transaction_Firebird_Exception',
                                    'Transaction_Firebird',
-                                   'Transaction_Informix_Exception',
                                    'Transaction_Informix',
-                                   'Transaction_Mssql_Exception',
                                    'Transaction_Mssql',
-                                   'Transaction_Mysql_Exception',
                                    'Transaction_Mysql',
-                                   'Transaction_Oracle_Exception',
                                    'Transaction_Oracle',
-                                   'Transaction_Pgsql_Exception',
                                    'Transaction_Pgsql',
-                                   'Transaction_Sqlite_Exception',
                                    'Transaction_Sqlite',
                                    'Transaction',
                                    'Validator_Country',