diff --git a/activerecord/test/aaa_create_tables_test.rb b/activerecord/test/aaa_create_tables_test.rb
index eb40913930..10ac9c525d 100644
--- a/activerecord/test/aaa_create_tables_test.rb
+++ b/activerecord/test/aaa_create_tables_test.rb
@@ -2,6 +2,8 @@
 require 'abstract_unit'
 
 class CreateTablesTest < Test::Unit::TestCase
+  self.use_transactional_fixtures = false
+
   def setup
     @base_path = "#{File.dirname(__FILE__)}/fixtures/db_definitions"
   end
diff --git a/activerecord/test/associations_join_model_test.rb b/activerecord/test/associations_join_model_test.rb
index 303c33679f..07e9288f08 100644
--- a/activerecord/test/associations_join_model_test.rb
+++ b/activerecord/test/associations_join_model_test.rb
@@ -5,6 +5,7 @@ require 'fixtures/post'
 require 'fixtures/comment'
 
 class AssociationsJoinModelTest < Test::Unit::TestCase
+  self.use_transactional_fixtures = false
   fixtures :posts, :comments, :tags, :taggings
 
   def test_polymorphic_has_many