diff --git a/nova/tests/unit/compute/monitors/test_cpu_monitor.py b/nova/tests/unit/compute/monitors/test_cpu_monitor.py
index 04977cd47fc5..b01ce255915e 100644
--- a/nova/tests/unit/compute/monitors/test_cpu_monitor.py
+++ b/nova/tests/unit/compute/monitors/test_cpu_monitor.py
@@ -36,7 +36,7 @@ class FakeLibvirt(object):
         return [0, 0, 0, 800, 0, 0, 0, 0]
 
 
-class ComputeDriverCPUMonitorTestCase(test.TestCase):
+class ComputeDriverCPUMonitorTestCase(test.NoDBTestCase):
     def setUp(self):
         super(ComputeDriverCPUMonitorTestCase, self).setUp()
 
diff --git a/nova/tests/unit/compute/monitors/test_monitors.py b/nova/tests/unit/compute/monitors/test_monitors.py
index e84647948357..3f6b3bdceadd 100644
--- a/nova/tests/unit/compute/monitors/test_monitors.py
+++ b/nova/tests/unit/compute/monitors/test_monitors.py
@@ -78,7 +78,7 @@ class FakeMonitorClass4(monitors.ResourceMonitorBase):
         raise test.TestingException()
 
 
-class ResourceMonitorBaseTestCase(test.TestCase):
+class ResourceMonitorBaseTestCase(test.NoDBTestCase):
     def setUp(self):
         super(ResourceMonitorBaseTestCase, self).setUp()
         self.monitor = FakeResourceMonitor(None)
@@ -102,7 +102,7 @@ class ResourceMonitorBaseTestCase(test.TestCase):
         self.assertEqual(metrics["foo.metric2"], '99.999')
 
 
-class ResourceMonitorsTestCase(test.TestCase):
+class ResourceMonitorsTestCase(test.NoDBTestCase):
     """Test case for monitors."""
 
     def setUp(self):
diff --git a/nova/tests/unit/compute/test_compute.py b/nova/tests/unit/compute/test_compute.py
index d507effcc98e..601e465169ce 100644
--- a/nova/tests/unit/compute/test_compute.py
+++ b/nova/tests/unit/compute/test_compute.py
@@ -11411,7 +11411,7 @@ class ComputeInjectedFilesTestCase(BaseTestCase):
                                   expected, None, True, None, False)
 
 
-class CheckConfigDriveTestCase(test.TestCase):
+class CheckConfigDriveTestCase(test.NoDBTestCase):
     # NOTE(sirp): `TestCase` is far too heavyweight for this test, this should
     # probably derive from a `test.FastTestCase` that omits DB and env
     # handling
diff --git a/nova/tests/unit/compute/test_flavors.py b/nova/tests/unit/compute/test_flavors.py
index cece4b3f39cc..3329ae0bb865 100644
--- a/nova/tests/unit/compute/test_flavors.py
+++ b/nova/tests/unit/compute/test_flavors.py
@@ -35,7 +35,7 @@ class ExtraSpecTestCase(test.NoDBTestCase):
         flavors.validate_extra_spec_keys(key_name_list)
 
 
-class CreateFlavorTestCase(test.TestCase):
+class CreateFlavorTestCase(test.NoDBTestCase):
     def test_create_flavor_ram_error(self):
         args = ("ram_test", "9999999999", "1", "10", "1")
         try:
diff --git a/nova/tests/unit/compute/test_resources.py b/nova/tests/unit/compute/test_resources.py
index cd310297102e..2dc7e9d5d940 100644
--- a/nova/tests/unit/compute/test_resources.py
+++ b/nova/tests/unit/compute/test_resources.py
@@ -136,7 +136,7 @@ def fake_flavor_obj(**updates):
     return flavor
 
 
-class BaseTestCase(test.TestCase):
+class BaseTestCase(test.NoDBTestCase):
 
     def _initialize_used_res_counter(self):
         # Initialize the value for the used resource
@@ -285,7 +285,7 @@ class BaseTestCase(test.TestCase):
         self.assertIsInstance(ext.obj, vcpu.VCPU)
 
 
-class TestVCPU(test.TestCase):
+class TestVCPU(test.NoDBTestCase):
 
     def setUp(self):
         super(TestVCPU, self).setUp()
diff --git a/nova/tests/unit/compute/test_rpcapi.py b/nova/tests/unit/compute/test_rpcapi.py
index 8c135711dc47..71266612322c 100644
--- a/nova/tests/unit/compute/test_rpcapi.py
+++ b/nova/tests/unit/compute/test_rpcapi.py
@@ -33,7 +33,7 @@ from nova.tests.unit import fake_instance
 CONF = cfg.CONF
 
 
-class ComputeRpcAPITestCase(test.TestCase):
+class ComputeRpcAPITestCase(test.NoDBTestCase):
 
     def setUp(self):
         super(ComputeRpcAPITestCase, self).setUp()