diff --git a/neutron/db/db_base_plugin_v2.py b/neutron/db/db_base_plugin_v2.py
index d6adceef36..33cac83f89 100644
--- a/neutron/db/db_base_plugin_v2.py
+++ b/neutron/db/db_base_plugin_v2.py
@@ -224,10 +224,6 @@ class NeutronDbPluginV2(neutron_plugin_base_v2.NeutronPluginBaseV2,
     __native_sorting_support = True
 
     def __init__(self):
-        # NOTE(jkoelker) This is an incomplete implementation. Subclasses
-        #                must override __init__ and setup the database
-        #                and not call into this class's __init__.
-        #                This connection is setup as memory for the tests.
         db.configure_db()
 
     @classmethod
diff --git a/neutron/plugins/bigswitch/plugin.py b/neutron/plugins/bigswitch/plugin.py
index d0bc7d46e4..ef39338580 100644
--- a/neutron/plugins/bigswitch/plugin.py
+++ b/neutron/plugins/bigswitch/plugin.py
@@ -57,7 +57,6 @@ from neutron.common import topics
 from neutron import context as qcontext
 from neutron.db import agents_db
 from neutron.db import agentschedulers_db
-from neutron.db import api as db
 from neutron.db import db_base_plugin_v2
 from neutron.db import dhcp_rpc_base
 from neutron.db import external_net_db
@@ -102,6 +101,7 @@ class NeutronRestProxyV2Base(db_base_plugin_v2.NeutronDbPluginV2,
     servers = None
 
     def __init__(self, server_timeout=None):
+        super(NeutronRestProxyV2Base, self).__init__()
         # This base class is not intended to be instantiated directly.
         # Extending class should set ServerPool.
         if not self.servers:
@@ -321,11 +321,10 @@ class NeutronRestProxyV2(NeutronRestProxyV2Base,
                                    "dhcp_agent_scheduler", "agent"]
 
     def __init__(self, server_timeout=None):
+        super(NeutronRestProxyV2, self).__init__()
         LOG.info(_('NeutronRestProxy: Starting plugin. Version=%s'),
                  version_string_with_vcs())
         pl_config.register_config()
-        # init DB, proxy's persistent store defaults to in-memory sql-lite DB
-        db.configure_db()
 
         # Include the BigSwitch Extensions path in the api_extensions
         neutron_extensions.append_api_extensions_path(extensions.__path__)
diff --git a/neutron/plugins/brocade/NeutronPlugin.py b/neutron/plugins/brocade/NeutronPlugin.py
index b49a6bafe1..f5a04ad205 100644
--- a/neutron/plugins/brocade/NeutronPlugin.py
+++ b/neutron/plugins/brocade/NeutronPlugin.py
@@ -225,6 +225,7 @@ class BrocadePluginV2(db_base_plugin_v2.NeutronDbPluginV2,
         Specify switch address and db configuration.
         """
 
+        super(BrocadePluginV2, self).__init__()
         self.supported_extension_aliases = ["binding", "security-group",
                                             "external-net", "router",
                                             "extraroute", "agent",
@@ -235,7 +236,6 @@ class BrocadePluginV2(db_base_plugin_v2.NeutronDbPluginV2,
                                    physical_interface)
         self.base_binding_dict = self._get_base_binding_dict()
         portbindings_base.register_port_dict_function()
-        db.configure_db()
         self.ctxt = context.get_admin_context()
         self.ctxt.session = db.get_session()
         self._vlan_bitmap = vbm.VlanBitmap(self.ctxt)
diff --git a/neutron/plugins/cisco/db/n1kv_db_v2.py b/neutron/plugins/cisco/db/n1kv_db_v2.py
index 7c7de737dc..01bd40966a 100644
--- a/neutron/plugins/cisco/db/n1kv_db_v2.py
+++ b/neutron/plugins/cisco/db/n1kv_db_v2.py
@@ -35,11 +35,6 @@ from neutron.plugins.cisco.db import n1kv_models_v2
 LOG = logging.getLogger(__name__)
 
 
-def initialize():
-    """Initialize the database."""
-    db.configure_db()
-
-
 def del_trunk_segment_binding(db_session, trunk_segment_id, segment_pairs):
     """
     Delete a trunk network binding.
diff --git a/neutron/plugins/cisco/n1kv/n1kv_neutron_plugin.py b/neutron/plugins/cisco/n1kv/n1kv_neutron_plugin.py
index 3c7acb8229..682edd7401 100644
--- a/neutron/plugins/cisco/n1kv/n1kv_neutron_plugin.py
+++ b/neutron/plugins/cisco/n1kv/n1kv_neutron_plugin.py
@@ -102,7 +102,7 @@ class N1kvNeutronPluginV2(db_base_plugin_v2.NeutronDbPluginV2,
         1. Initialize Nexus1000v and Credential DB
         2. Establish communication with Cisco Nexus1000V
         """
-        n1kv_db_v2.initialize()
+        super(N1kvNeutronPluginV2, self).__init__()
         c_cred.Store.initialize()
         self._initialize_network_ranges()
         self._setup_vsm()
diff --git a/neutron/plugins/linuxbridge/db/l2network_db_v2.py b/neutron/plugins/linuxbridge/db/l2network_db_v2.py
index 786fe841a1..819d16a329 100644
--- a/neutron/plugins/linuxbridge/db/l2network_db_v2.py
+++ b/neutron/plugins/linuxbridge/db/l2network_db_v2.py
@@ -29,10 +29,6 @@ from neutron.plugins.linuxbridge.db import l2network_models_v2
 LOG = logging.getLogger(__name__)
 
 
-def initialize():
-    db.configure_db()
-
-
 def sync_network_states(network_vlan_ranges):
     """Synchronize network_states table with current configured VLAN ranges."""
 
diff --git a/neutron/plugins/linuxbridge/lb_neutron_plugin.py b/neutron/plugins/linuxbridge/lb_neutron_plugin.py
index 995b2fe788..c06ce6a76e 100644
--- a/neutron/plugins/linuxbridge/lb_neutron_plugin.py
+++ b/neutron/plugins/linuxbridge/lb_neutron_plugin.py
@@ -252,12 +252,12 @@ class LinuxBridgePluginV2(db_base_plugin_v2.NeutronDbPluginV2,
         return self._aliases
 
     def __init__(self):
+        super(LinuxBridgePluginV2, self).__init__()
         self.base_binding_dict = {
             portbindings.VIF_TYPE: portbindings.VIF_TYPE_BRIDGE,
             portbindings.CAPABILITIES: {
                 portbindings.CAP_PORT_FILTER:
                 'security-group' in self.supported_extension_aliases}}
-        db.initialize()
         self._parse_network_vlan_ranges()
         db.sync_network_states(self.network_vlan_ranges)
         self.tenant_network_type = cfg.CONF.VLANS.tenant_network_type
diff --git a/neutron/plugins/metaplugin/meta_neutron_plugin.py b/neutron/plugins/metaplugin/meta_neutron_plugin.py
index fb4ad88776..1f1a38606e 100644
--- a/neutron/plugins/metaplugin/meta_neutron_plugin.py
+++ b/neutron/plugins/metaplugin/meta_neutron_plugin.py
@@ -50,6 +50,7 @@ class MetaPluginV2(db_base_plugin_v2.NeutronDbPluginV2,
                    extraroute_db.ExtraRoute_db_mixin):
 
     def __init__(self, configfile=None):
+        super(MetaPluginV2, self).__init__()
         LOG.debug(_("Start initializing metaplugin"))
         self.supported_extension_aliases = ['flavor', 'external-net',
                                             'router', 'ext-gw-mode',
@@ -99,8 +100,6 @@ class MetaPluginV2(db_base_plugin_v2.NeutronDbPluginV2,
             raise exc.Invalid(_('default_l3_flavor %s is not plugin list') %
                               self.default_l3_flavor)
 
-        db.configure_db()
-
         self.extension_map = {}
         if not cfg.CONF.META.extension_map == '':
             extension_list = [method_set.split(':')
diff --git a/neutron/plugins/metaplugin/proxy_neutron_plugin.py b/neutron/plugins/metaplugin/proxy_neutron_plugin.py
index e8faa310d1..61cc340266 100644
--- a/neutron/plugins/metaplugin/proxy_neutron_plugin.py
+++ b/neutron/plugins/metaplugin/proxy_neutron_plugin.py
@@ -17,7 +17,6 @@
 
 from oslo.config import cfg
 
-from neutron.db import api as db
 from neutron.db import db_base_plugin_v2
 from neutron.db import external_net_db
 from neutron.db import l3_db
@@ -35,7 +34,7 @@ class ProxyPluginV2(db_base_plugin_v2.NeutronDbPluginV2,
     supported_extension_aliases = ["external-net", "router"]
 
     def __init__(self, configfile=None):
-        db.configure_db()
+        super(ProxyPluginV2, self).__init__()
         self.neutron = client.Client(
             username=cfg.CONF.PROXY.admin_user,
             password=cfg.CONF.PROXY.admin_password,
diff --git a/neutron/plugins/midonet/plugin.py b/neutron/plugins/midonet/plugin.py
index a10b689c14..984736dcbc 100644
--- a/neutron/plugins/midonet/plugin.py
+++ b/neutron/plugins/midonet/plugin.py
@@ -33,7 +33,6 @@ from neutron.common import rpc as n_rpc
 from neutron.common import topics
 from neutron.db import agents_db
 from neutron.db import agentschedulers_db
-from neutron.db import api as db
 from neutron.db import db_base_plugin_v2
 from neutron.db import dhcp_rpc_base
 from neutron.db import external_net_db
@@ -209,6 +208,7 @@ class MidonetPluginV2(db_base_plugin_v2.NeutronDbPluginV2,
     __native_bulk_support = False
 
     def __init__(self):
+        super(MidonetPluginV2, self).__init__()
         # Read config values
         midonet_conf = cfg.CONF.MIDONET
         midonet_uri = midonet_conf.midonet_uri
@@ -231,7 +231,6 @@ class MidonetPluginV2(db_base_plugin_v2.NeutronDbPluginV2,
             raise MidonetPluginException(msg=msg)
 
         self.setup_rpc()
-        db.configure_db()
 
         self.base_binding_dict = {
             portbindings.VIF_TYPE: portbindings.VIF_TYPE_MIDONET,
diff --git a/neutron/plugins/ml2/db.py b/neutron/plugins/ml2/db.py
index bf911d3d1a..0a2d981a5f 100644
--- a/neutron/plugins/ml2/db.py
+++ b/neutron/plugins/ml2/db.py
@@ -28,10 +28,6 @@ from neutron.plugins.ml2 import models
 LOG = log.getLogger(__name__)
 
 
-def initialize():
-    db_api.configure_db()
-
-
 def add_network_segment(session, network_id, segment):
     with session.begin(subtransactions=True):
         record = models.NetworkSegment(
diff --git a/neutron/plugins/ml2/plugin.py b/neutron/plugins/ml2/plugin.py
index dcfcade1fb..67d788548b 100644
--- a/neutron/plugins/ml2/plugin.py
+++ b/neutron/plugins/ml2/plugin.py
@@ -98,10 +98,10 @@ class Ml2Plugin(db_base_plugin_v2.NeutronDbPluginV2,
         return self._aliases
 
     def __init__(self):
+        super(Ml2Plugin, self).__init__()
         # First load drivers, then initialize DB, then initialize drivers
         self.type_manager = managers.TypeManager()
         self.mechanism_manager = managers.MechanismManager()
-        db.initialize()
         self.type_manager.initialize()
         self.mechanism_manager.initialize()
         # bulk support depends on the underlying drivers
diff --git a/neutron/plugins/mlnx/db/mlnx_db_v2.py b/neutron/plugins/mlnx/db/mlnx_db_v2.py
index 50dd7057a4..23f48e2dfa 100644
--- a/neutron/plugins/mlnx/db/mlnx_db_v2.py
+++ b/neutron/plugins/mlnx/db/mlnx_db_v2.py
@@ -29,10 +29,6 @@ from neutron.plugins.mlnx.db import mlnx_models_v2
 LOG = logging.getLogger(__name__)
 
 
-def initialize():
-    db.configure_db()
-
-
 def _remove_non_allocatable_vlans(session, allocations,
                                   physical_network, vlan_ids):
     if physical_network in allocations:
diff --git a/neutron/plugins/mlnx/mlnx_plugin.py b/neutron/plugins/mlnx/mlnx_plugin.py
index a8cbe90b99..cee2e4b3d8 100644
--- a/neutron/plugins/mlnx/mlnx_plugin.py
+++ b/neutron/plugins/mlnx/mlnx_plugin.py
@@ -95,7 +95,7 @@ class MellanoxEswitchPlugin(db_base_plugin_v2.NeutronDbPluginV2,
 
     def __init__(self):
         """Start Mellanox Neutron Plugin."""
-        db.initialize()
+        super(MellanoxEswitchPlugin, self).__init__()
         self._parse_network_vlan_ranges()
         db.sync_network_states(self.network_vlan_ranges)
         self._set_tenant_network_type()
diff --git a/neutron/plugins/nec/db/api.py b/neutron/plugins/nec/db/api.py
index e606861ff2..b5935f588f 100644
--- a/neutron/plugins/nec/db/api.py
+++ b/neutron/plugins/nec/db/api.py
@@ -56,10 +56,6 @@ def _get_resource_model(resource, old_style):
         return resource_map[resource]
 
 
-def initialize():
-    db.configure_db()
-
-
 def clear_db(base=model_base.BASEV2):
     db.clear_db(base)
 
diff --git a/neutron/plugins/nec/nec_plugin.py b/neutron/plugins/nec/nec_plugin.py
index 41aaf61f7c..95e35ffce4 100644
--- a/neutron/plugins/nec/nec_plugin.py
+++ b/neutron/plugins/nec/nec_plugin.py
@@ -102,8 +102,7 @@ class NECPluginV2(db_base_plugin_v2.NeutronDbPluginV2,
         return self._aliases
 
     def __init__(self):
-
-        ndb.initialize()
+        super(NECPluginV2, self).__init__()
         self.ofc = ofc_manager.OFCManager()
         self.base_binding_dict = self._get_base_binding_dict()
         portbindings_base.register_port_dict_function()
diff --git a/neutron/plugins/nicira/NeutronPlugin.py b/neutron/plugins/nicira/NeutronPlugin.py
index 243aeaed5c..fb248ed2c4 100644
--- a/neutron/plugins/nicira/NeutronPlugin.py
+++ b/neutron/plugins/nicira/NeutronPlugin.py
@@ -38,7 +38,6 @@ from neutron.common import utils
 from neutron import context as q_context
 from neutron.db import agentschedulers_db
 from neutron.db import allowedaddresspairs_db as addr_pair_db
-from neutron.db import api as db
 from neutron.db import db_base_plugin_v2
 from neutron.db import external_net_db
 from neutron.db import extraroute_db
@@ -146,7 +145,7 @@ class NvpPluginV2(addr_pair_db.AllowedAddressPairsMixin,
     novazone_cluster_map = {}
 
     def __init__(self):
-
+        super(NvpPluginV2, self).__init__()
         # TODO(salv-orlando): Replace These dicts with
         # collections.defaultdict for better handling of default values
         # Routines for managing logical ports in NVP
@@ -187,7 +186,6 @@ class NvpPluginV2(addr_pair_db.AllowedAddressPairsMixin,
                 pbin.CAP_PORT_FILTER:
                 'security-group' in self.supported_extension_aliases}}
 
-        db.configure_db()
         self._extend_fault_map()
         self.setup_dhcpmeta_access()
         # Set this flag to false as the default gateway has not
diff --git a/neutron/plugins/openvswitch/ovs_db_v2.py b/neutron/plugins/openvswitch/ovs_db_v2.py
index b28df3e126..821163d80a 100644
--- a/neutron/plugins/openvswitch/ovs_db_v2.py
+++ b/neutron/plugins/openvswitch/ovs_db_v2.py
@@ -33,10 +33,6 @@ from neutron.plugins.openvswitch import ovs_models_v2
 LOG = logging.getLogger(__name__)
 
 
-def initialize():
-    db.configure_db()
-
-
 def get_network_binding(session, network_id):
     session = session or db.get_session()
     try:
diff --git a/neutron/plugins/openvswitch/ovs_neutron_plugin.py b/neutron/plugins/openvswitch/ovs_neutron_plugin.py
index 450ce3dd24..fde00edeb1 100644
--- a/neutron/plugins/openvswitch/ovs_neutron_plugin.py
+++ b/neutron/plugins/openvswitch/ovs_neutron_plugin.py
@@ -294,12 +294,12 @@ class OVSNeutronPluginV2(db_base_plugin_v2.NeutronDbPluginV2,
         attributes.NETWORKS, ['_extend_network_dict_provider_ovs'])
 
     def __init__(self, configfile=None):
+        super(OVSNeutronPluginV2, self).__init__()
         self.base_binding_dict = {
             portbindings.VIF_TYPE: portbindings.VIF_TYPE_OVS,
             portbindings.CAPABILITIES: {
                 portbindings.CAP_PORT_FILTER:
                 'security-group' in self.supported_extension_aliases}}
-        ovs_db_v2.initialize()
         self._parse_network_vlan_ranges()
         ovs_db_v2.sync_vlan_allocations(self.network_vlan_ranges)
         self.tenant_network_type = cfg.CONF.OVS.tenant_network_type
diff --git a/neutron/plugins/plumgrid/plumgrid_plugin/plumgrid_plugin.py b/neutron/plugins/plumgrid/plumgrid_plugin/plumgrid_plugin.py
index fb389c434b..1f8f99c0d9 100644
--- a/neutron/plugins/plumgrid/plumgrid_plugin/plumgrid_plugin.py
+++ b/neutron/plugins/plumgrid/plumgrid_plugin/plumgrid_plugin.py
@@ -25,7 +25,6 @@ import netaddr
 from oslo.config import cfg
 
 from neutron.api.v2 import attributes
-from neutron.db import api as db
 from neutron.db import db_base_plugin_v2
 from neutron.db import external_net_db
 from neutron.db import l3_db
@@ -69,9 +68,7 @@ class NeutronPluginPLUMgridV2(db_base_plugin_v2.NeutronDbPluginV2,
     def __init__(self):
         LOG.info(_('Neutron PLUMgrid Director: Starting Plugin'))
 
-        # Plugin DB initialization
-        db.configure_db()
-
+        super(NeutronPluginPLUMgridV2, self).__init__()
         self.plumgrid_init()
 
         LOG.debug(_('Neutron PLUMgrid Director: Neutron server with '
diff --git a/neutron/plugins/ryu/ryu_neutron_plugin.py b/neutron/plugins/ryu/ryu_neutron_plugin.py
index 5fe2845b1f..c81b2069f0 100644
--- a/neutron/plugins/ryu/ryu_neutron_plugin.py
+++ b/neutron/plugins/ryu/ryu_neutron_plugin.py
@@ -109,13 +109,13 @@ class RyuNeutronPluginV2(db_base_plugin_v2.NeutronDbPluginV2,
         return self._aliases
 
     def __init__(self, configfile=None):
+        super(RyuNeutronPluginV2, self).__init__()
         self.base_binding_dict = {
             portbindings.VIF_TYPE: portbindings.VIF_TYPE_OVS,
             portbindings.CAPABILITIES: {
                 portbindings.CAP_PORT_FILTER:
                 'security-group' in self.supported_extension_aliases}}
         portbindings_base.register_port_dict_function()
-        db.configure_db()
         self.tunnel_key = db_api_v2.TunnelKey(
             cfg.CONF.OVS.tunnel_key_min, cfg.CONF.OVS.tunnel_key_max)
         self.ofp_api_host = cfg.CONF.OVS.openflow_rest_api
diff --git a/neutron/tests/unit/cisco/n1kv/test_n1kv_db.py b/neutron/tests/unit/cisco/n1kv/test_n1kv_db.py
index 8e4a0b40f4..6339c834ad 100644
--- a/neutron/tests/unit/cisco/n1kv/test_n1kv_db.py
+++ b/neutron/tests/unit/cisco/n1kv/test_n1kv_db.py
@@ -100,7 +100,7 @@ class VlanAllocationsTest(base.BaseTestCase):
 
     def setUp(self):
         super(VlanAllocationsTest, self).setUp()
-        n1kv_db_v2.initialize()
+        db.configure_db()
         self.session = db.get_session()
         n1kv_db_v2.sync_vlan_allocations(self.session, VLAN_RANGES)
 
@@ -284,7 +284,7 @@ class VxlanAllocationsTest(base.BaseTestCase,
 
     def setUp(self):
         super(VxlanAllocationsTest, self).setUp()
-        n1kv_db_v2.initialize()
+        db.configure_db()
         self.session = db.get_session()
         n1kv_db_v2.sync_vxlan_allocations(self.session, VXLAN_RANGES)
 
@@ -392,7 +392,7 @@ class NetworkBindingsTest(test_plugin.NeutronDbPluginV2TestCase):
 
     def setUp(self):
         super(NetworkBindingsTest, self).setUp()
-        n1kv_db_v2.initialize()
+        db.configure_db()
         self.session = db.get_session()
 
     def tearDown(self):
@@ -643,7 +643,7 @@ class NetworkProfileTests(base.BaseTestCase,
 
     def setUp(self):
         super(NetworkProfileTests, self).setUp()
-        n1kv_db_v2.initialize()
+        db.configure_db()
         self.session = db.get_session()
 
     def tearDown(self):
@@ -828,7 +828,7 @@ class PolicyProfileTests(base.BaseTestCase):
 
     def setUp(self):
         super(PolicyProfileTests, self).setUp()
-        n1kv_db_v2.initialize()
+        db.configure_db()
         self.session = db.get_session()
 
     def tearDown(self):
@@ -876,7 +876,7 @@ class ProfileBindingTests(base.BaseTestCase,
 
     def setUp(self):
         super(ProfileBindingTests, self).setUp()
-        n1kv_db_v2.initialize()
+        db.configure_db()
         self.session = db.get_session()
 
     def tearDown(self):
diff --git a/neutron/tests/unit/cisco/n1kv/test_n1kv_plugin.py b/neutron/tests/unit/cisco/n1kv/test_n1kv_plugin.py
index b698e09d8d..6cbbeea257 100644
--- a/neutron/tests/unit/cisco/n1kv/test_n1kv_plugin.py
+++ b/neutron/tests/unit/cisco/n1kv/test_n1kv_plugin.py
@@ -395,4 +395,4 @@ class TestN1kvNonDbTest(base.BaseTestCase):
 
     """
     def test_db(self):
-        n1kv_db_v2.initialize()
+        db.configure_db()
diff --git a/neutron/tests/unit/linuxbridge/test_lb_db.py b/neutron/tests/unit/linuxbridge/test_lb_db.py
index 737747c4eb..37885f8141 100644
--- a/neutron/tests/unit/linuxbridge/test_lb_db.py
+++ b/neutron/tests/unit/linuxbridge/test_lb_db.py
@@ -38,7 +38,7 @@ PLUGIN_NAME = ('neutron.plugins.linuxbridge.'
 class NetworkStatesTest(base.BaseTestCase):
     def setUp(self):
         super(NetworkStatesTest, self).setUp()
-        lb_db.initialize()
+        db.configure_db()
         lb_db.sync_network_states(VLAN_RANGES)
         self.session = db.get_session()
         self.addCleanup(db.clear_db)
@@ -154,7 +154,7 @@ class NetworkBindingsTest(test_plugin.NeutronDbPluginV2TestCase):
         cfg.CONF.set_override('network_vlan_ranges', ['physnet1:1000:2999'],
                               group='VLANS')
         super(NetworkBindingsTest, self).setUp(plugin=PLUGIN_NAME)
-        lb_db.initialize()
+        db.configure_db()
         self.session = db.get_session()
 
     def test_add_network_binding(self):
diff --git a/neutron/tests/unit/ml2/test_type_gre.py b/neutron/tests/unit/ml2/test_type_gre.py
index 4a2b279230..dd52f0dbf8 100644
--- a/neutron/tests/unit/ml2/test_type_gre.py
+++ b/neutron/tests/unit/ml2/test_type_gre.py
@@ -18,7 +18,6 @@ from testtools import matchers
 
 from neutron.common import exceptions as exc
 import neutron.db.api as db
-from neutron.plugins.ml2 import db as ml2_db
 from neutron.plugins.ml2 import driver_api as api
 from neutron.plugins.ml2.drivers import type_gre
 from neutron.tests import base
@@ -35,7 +34,7 @@ class GreTypeTest(base.BaseTestCase):
 
     def setUp(self):
         super(GreTypeTest, self).setUp()
-        ml2_db.initialize()
+        db.configure_db()
         self.driver = type_gre.GreTypeDriver()
         self.driver.gre_id_ranges = TUNNEL_RANGES
         self.driver._sync_gre_allocations()
@@ -187,7 +186,7 @@ class GreTypeMultiRangeTest(base.BaseTestCase):
 
     def setUp(self):
         super(GreTypeMultiRangeTest, self).setUp()
-        ml2_db.initialize()
+        db.configure_db()
         self.driver = type_gre.GreTypeDriver()
         self.driver.gre_id_ranges = self.TUNNEL_MULTI_RANGES
         self.driver._sync_gre_allocations()
diff --git a/neutron/tests/unit/ml2/test_type_vxlan.py b/neutron/tests/unit/ml2/test_type_vxlan.py
index e4cd829b3d..f7121126c6 100644
--- a/neutron/tests/unit/ml2/test_type_vxlan.py
+++ b/neutron/tests/unit/ml2/test_type_vxlan.py
@@ -21,7 +21,6 @@ from testtools import matchers
 from neutron.common import exceptions as exc
 from neutron.db import api as db
 from neutron.plugins.common import constants as p_const
-from neutron.plugins.ml2 import db as ml2_db
 from neutron.plugins.ml2 import driver_api as api
 from neutron.plugins.ml2.drivers import type_vxlan
 from neutron.tests import base
@@ -42,7 +41,7 @@ VXLAN_UDP_PORT_TWO = 8888
 class VxlanTypeTest(base.BaseTestCase):
     def setUp(self):
         super(VxlanTypeTest, self).setUp()
-        ml2_db.initialize()
+        db.configure_db()
         cfg.CONF.set_override('vni_ranges', [TUNNEL_RANGES],
                               group='ml2_type_vxlan')
         cfg.CONF.set_override('vxlan_group', MULTICAST_GROUP,
@@ -207,7 +206,7 @@ class VxlanTypeMultiRangeTest(base.BaseTestCase):
 
     def setUp(self):
         super(VxlanTypeMultiRangeTest, self).setUp()
-        ml2_db.initialize()
+        db.configure_db()
         self.driver = type_vxlan.VxlanTypeDriver()
         self.driver.vxlan_vni_ranges = self.TUNNEL_MULTI_RANGES
         self.driver._sync_vxlan_allocations()
diff --git a/neutron/tests/unit/mlnx/test_mlnx_db.py b/neutron/tests/unit/mlnx/test_mlnx_db.py
index b79b871c42..c02c19e450 100644
--- a/neutron/tests/unit/mlnx/test_mlnx_db.py
+++ b/neutron/tests/unit/mlnx/test_mlnx_db.py
@@ -35,7 +35,7 @@ TEST_NETWORK_ID = 'abcdefghijklmnopqrstuvwxyz'
 class SegmentationIdAllocationTest(base.BaseTestCase):
     def setUp(self):
         super(SegmentationIdAllocationTest, self).setUp()
-        mlnx_db.initialize()
+        db.configure_db()
         mlnx_db.sync_network_states(VLAN_RANGES)
         self.session = db.get_session()
         self.addCleanup(db.clear_db)
@@ -158,7 +158,7 @@ class SegmentationIdAllocationTest(base.BaseTestCase):
 class NetworkBindingsTest(test_plugin.NeutronDbPluginV2TestCase):
     def setUp(self):
         super(NetworkBindingsTest, self).setUp()
-        mlnx_db.initialize()
+        db.configure_db()
         self.session = db.get_session()
 
     def test_add_network_binding(self):
diff --git a/neutron/tests/unit/nec/test_ofc_manager.py b/neutron/tests/unit/nec/test_ofc_manager.py
index 309a4ac305..0d7a5f7010 100644
--- a/neutron/tests/unit/nec/test_ofc_manager.py
+++ b/neutron/tests/unit/nec/test_ofc_manager.py
@@ -18,6 +18,7 @@
 import mock
 
 from neutron import context
+from neutron.db import api as db
 from neutron.openstack.common import uuidutils
 from neutron.plugins.nec.common import config
 from neutron.plugins.nec.db import api as ndb
@@ -44,9 +45,9 @@ class OFCManagerTestBase(base.BaseTestCase):
 
     def setUp(self):
         super(OFCManagerTestBase, self).setUp()
+        db.configure_db()
         driver = "neutron.tests.unit.nec.stub_ofc_driver.StubOFCDriver"
         config.CONF.set_override('driver', driver, 'OFC')
-        ndb.initialize()
         self.addCleanup(ndb.clear_db)
         self.ofc = ofc_manager.OFCManager()
         # NOTE: enable_autocheck() is a feature of StubOFCDriver
diff --git a/neutron/tests/unit/openvswitch/test_ovs_db.py b/neutron/tests/unit/openvswitch/test_ovs_db.py
index b53fa4df29..91aefe09da 100644
--- a/neutron/tests/unit/openvswitch/test_ovs_db.py
+++ b/neutron/tests/unit/openvswitch/test_ovs_db.py
@@ -48,7 +48,7 @@ PLUGIN_NAME = ('neutron.plugins.openvswitch.'
 class VlanAllocationsTest(base.BaseTestCase):
     def setUp(self):
         super(VlanAllocationsTest, self).setUp()
-        ovs_db_v2.initialize()
+        db.configure_db()
         ovs_db_v2.sync_vlan_allocations(VLAN_RANGES)
         self.session = db.get_session()
         self.addCleanup(db.clear_db)
@@ -192,7 +192,7 @@ class VlanAllocationsTest(base.BaseTestCase):
 class TunnelAllocationsTest(base.BaseTestCase):
     def setUp(self):
         super(TunnelAllocationsTest, self).setUp()
-        ovs_db_v2.initialize()
+        db.configure_db()
         ovs_db_v2.sync_tunnel_allocations(TUNNEL_RANGES)
         self.session = db.get_session()
         self.addCleanup(db.clear_db)
@@ -302,7 +302,7 @@ class NetworkBindingsTest(test_plugin.NeutronDbPluginV2TestCase):
         cfg.CONF.set_override('network_vlan_ranges', ['physnet1:1000:2999'],
                               group='OVS')
         super(NetworkBindingsTest, self).setUp(plugin=PLUGIN_NAME)
-        ovs_db_v2.initialize()
+        db.configure_db()
         self.session = db.get_session()
 
     def test_add_network_binding(self):
diff --git a/neutron/tests/unit/test_quota_ext.py b/neutron/tests/unit/test_quota_ext.py
index 627e257da1..7c395c1331 100644
--- a/neutron/tests/unit/test_quota_ext.py
+++ b/neutron/tests/unit/test_quota_ext.py
@@ -29,7 +29,6 @@ from neutron.common import exceptions
 from neutron import context
 from neutron.db import api as db
 from neutron.db import quota_db
-from neutron.plugins.linuxbridge.db import l2network_db_v2
 from neutron import quota
 from neutron.tests import base
 from neutron.tests.unit import test_api_v2
@@ -73,7 +72,7 @@ class QuotaExtensionTestCase(testlib_api.WebTestCase):
         # extra1 here is added later, so have to do it manually
         quota.QUOTAS.register_resource_by_name('extra1')
         ext_mgr = extensions.PluginAwareExtensionManager.get_instance()
-        l2network_db_v2.initialize()
+        db.configure_db()
         app = config.load_paste_app('extensions_test_app')
         ext_middleware = extensions.ExtensionMiddleware(app, ext_mgr=ext_mgr)
         self.api = webtest.TestApp(ext_middleware)