diff --git a/engine/schema/src/main/resources/META-INF/db/schema-41610to41700.sql b/engine/schema/src/main/resources/META-INF/db/schema-41610to41700.sql
index 6885e499222..f51f88aef84 100644
--- a/engine/schema/src/main/resources/META-INF/db/schema-41610to41700.sql
+++ b/engine/schema/src/main/resources/META-INF/db/schema-41610to41700.sql
@@ -887,9 +887,8 @@ left join `cloud`.`mshost_status` on
     ((`cloud`.`mshost`.`uuid` = `cloud`.`mshost_status`.`ms_id`)));
 
 -- Alter event table to add resource_id and resource_type
-ALTER TABLE `cloud`.`event`
-    ADD COLUMN `resource_id` bigint unsigned COMMENT 'ID of the resource associated with the event' AFTER `domain_id`,
-    ADD COLUMN `resource_type` varchar(32) COMMENT 'Type of the resource associated with the event' AFTER `resource_id`;
+CALL `cloud`.`IDEMPOTENT_ADD_COLUMN`('cloud.event','resource_id', 'bigint unsigned COMMENT "ID of the resource associated with the event" AFTER `domain_id`');
+CALL `cloud`.`IDEMPOTENT_ADD_COLUMN`('cloud.event','resource_type', 'VARCHAR(32) COMMENT "Type of the resource associated with the event" AFTER `resource_id`');
 
 DROP VIEW IF EXISTS `cloud`.`event_view`;
 CREATE VIEW `cloud`.`event_view` AS
diff --git a/framework/db/src/main/java/com/cloud/utils/db/ConnectionConcierge.java b/framework/db/src/main/java/com/cloud/utils/db/ConnectionConcierge.java
index a1c473d5ffd..2ae0de90f26 100644
--- a/framework/db/src/main/java/com/cloud/utils/db/ConnectionConcierge.java
+++ b/framework/db/src/main/java/com/cloud/utils/db/ConnectionConcierge.java
@@ -174,7 +174,7 @@ public class ConnectionConcierge {
 
             Connection conn = TransactionLegacy.getStandaloneConnection();
             if (conn == null) {
-                return "Unable to get anotehr db connection";
+                return "Unable to get another db connection";
             }
 
             concierge.reset(conn);
@@ -198,9 +198,13 @@ public class ConnectionConcierge {
                 protected void runInContext() {
                     s_logger.trace("connection concierge keep alive task");
                     for (Map.Entry<String, ConnectionConcierge> entry : _conns.entrySet()) {
+                        String name = entry.getKey();
                         ConnectionConcierge concierge = entry.getValue();
                         if (concierge.keepAlive()) {
-                            testValidity(entry.getKey(), entry.getValue().conn());
+                            if (testValidity(name, concierge.conn()) != null) {
+                                s_logger.info("Resetting DB connection " + name);
+                                resetConnection(name);
+                            }
                         }
                     }
                 }
diff --git a/server/src/main/java/com/cloud/network/Ipv6ServiceImpl.java b/server/src/main/java/com/cloud/network/Ipv6ServiceImpl.java
index 47537a69d19..68b32e577db 100644
--- a/server/src/main/java/com/cloud/network/Ipv6ServiceImpl.java
+++ b/server/src/main/java/com/cloud/network/Ipv6ServiceImpl.java
@@ -502,7 +502,7 @@ public class Ipv6ServiceImpl extends ComponentLifecycleBase implements Ipv6Servi
                 ipAddressDao.listByAssociatedVpc(network.getVpcId(), true);
         for (IPAddressVO address : addresses) {
             VlanVO vlan = vlanDao.findById(address.getVlanId());
-            final List<VlanVO> ranges = vlanDao.listIpv6RangeByZoneIdAndVlanId(network.getPhysicalNetworkId(), vlan.getVlanTag());
+            final List<VlanVO> ranges = vlanDao.listIpv6RangeByZoneIdAndVlanId(network.getDataCenterId(), vlan.getVlanTag());
             if (CollectionUtils.isEmpty(ranges)) {
                 s_logger.error(String.format("Unable to find IPv6 address for zone ID: %d, physical network ID: %d, VLAN: %s", network.getDataCenterId(), network.getPhysicalNetworkId(), vlan.getVlanTag()));
                 InsufficientAddressCapacityException ex = new InsufficientAddressCapacityException("Insufficient address capacity", DataCenter.class, network.getDataCenterId());
diff --git a/server/src/test/java/com/cloud/network/Ipv6ServiceImplTest.java b/server/src/test/java/com/cloud/network/Ipv6ServiceImplTest.java
index 3b55717d209..b1883a7f4f8 100644
--- a/server/src/test/java/com/cloud/network/Ipv6ServiceImplTest.java
+++ b/server/src/test/java/com/cloud/network/Ipv6ServiceImplTest.java
@@ -593,10 +593,10 @@ public class Ipv6ServiceImplTest {
 
     @Test
     public void testCheckNetworkIpv6UpgradeForNoIpv6Vlan() {
-        final long physicalNetworkId = 1L;
+        final long zoneId = 1L;
         Mockito.when(dataCenterGuestIpv6PrefixDao.listByDataCenterId(Mockito.anyLong())).thenReturn(List.of(Mockito.mock(DataCenterGuestIpv6PrefixVO.class)));
         Network network = Mockito.mock(Network.class);
-        Mockito.when(network.getPhysicalNetworkId()).thenReturn(physicalNetworkId);
+        Mockito.when(network.getDataCenterId()).thenReturn(zoneId);
         Mockito.when(network.getVpcId()).thenReturn(null);
         Mockito.when(ipAddressDao.listByAssociatedNetwork(Mockito.anyLong(), Mockito.anyBoolean())).thenReturn(List.of(Mockito.mock(IPAddressVO.class)));
         VlanVO vlanVO = Mockito.mock(VlanVO.class);
@@ -611,16 +611,16 @@ public class Ipv6ServiceImplTest {
 
     @Test
     public void testCheckNetworkIpv6UpgradeForNetwork() {
-        final long physicalNetworkId = 1L;
+        final long zoneId = 1L;
         Mockito.when(dataCenterGuestIpv6PrefixDao.listByDataCenterId(Mockito.anyLong())).thenReturn(List.of(Mockito.mock(DataCenterGuestIpv6PrefixVO.class)));
         Network network = Mockito.mock(Network.class);
-        Mockito.when(network.getPhysicalNetworkId()).thenReturn(physicalNetworkId);
+        Mockito.when(network.getDataCenterId()).thenReturn(zoneId);
         Mockito.when(network.getVpcId()).thenReturn(null);
         Mockito.when(ipAddressDao.listByAssociatedNetwork(Mockito.anyLong(), Mockito.anyBoolean())).thenReturn(List.of(Mockito.mock(IPAddressVO.class)));
         VlanVO vlanVO = Mockito.mock(VlanVO.class);
         Mockito.when(vlanVO.getVlanTag()).thenReturn(vlan);
         Mockito.when(vlanDao.findById(Mockito.anyLong())).thenReturn(vlanVO);
-        Mockito.when(vlanDao.listIpv6RangeByZoneIdAndVlanId(physicalNetworkId, vlan)).thenReturn(List.of(vlanVO));
+        Mockito.when(vlanDao.listIpv6RangeByZoneIdAndVlanId(zoneId, vlan)).thenReturn(List.of(vlanVO));
         try {
             ipv6Service.checkNetworkIpv6Upgrade(network);
         } catch (InsufficientAddressCapacityException | ResourceAllocationException e) {