diff --git a/engine/schema/src/com/cloud/upgrade/dao/Upgrade452to460.java b/engine/schema/src/com/cloud/upgrade/dao/Upgrade452to460.java
new file mode 100644
index 00000000000..5de1cee31c2
--- /dev/null
+++ b/engine/schema/src/com/cloud/upgrade/dao/Upgrade452to460.java
@@ -0,0 +1,183 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+package com.cloud.upgrade.dao;
+
+import java.io.File;
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.log4j.Logger;
+
+import com.cloud.utils.exception.CloudRuntimeException;
+import com.cloud.utils.script.Script;
+
+public class Upgrade452to460 implements DbUpgrade {
+    final static Logger s_logger = Logger.getLogger(Upgrade452to460.class);
+
+    @Override
+    public String[] getUpgradableVersionRange() {
+        return new String[] { "4.5.2", "4.6.0" };
+    }
+
+    @Override
+    public String getUpgradedVersion() {
+        return "4.6.0";
+    }
+
+    @Override
+    public boolean supportsRollingUpgrade() {
+        return false;
+    }
+
+    @Override
+    public File[] getPrepareScripts() {
+        final String script = Script.findScript("", "db/schema-452to460.sql");
+        if (script == null) {
+            throw new CloudRuntimeException("Unable to find db/schema-452to460.sql");
+        }
+
+        return new File[] { new File(script) };
+    }
+
+    @Override
+    public void performDataMigration(final Connection conn) {
+        alterAddColumnToCloudUsage(conn);
+        updateVMInstanceUserId(conn);
+        addIndexForVMInstance(conn);
+    }
+
+    public void alterAddColumnToCloudUsage(final Connection conn) {
+        final String alterTableSql = "ALTER TABLE `cloud_usage`.`cloud_usage` ADD COLUMN `quota_calculated` tinyint(1) DEFAULT 0 NOT NULL COMMENT 'quota calculation status'";
+        try (PreparedStatement pstmt = conn.prepareStatement(alterTableSql)) {
+            pstmt.executeUpdate();
+            s_logger.info("Altered usage table and added column quota_calculated");
+        } catch (SQLException e) {
+            if (e.getMessage().contains("quota_calculated")) {
+                s_logger.warn("Usage table already has a column called quota_calculated");
+            } else {
+                throw new CloudRuntimeException("Unable to create column quota_calculated", e);
+            }
+        }
+    }
+
+    public void updateVMInstanceUserId(final Connection conn) {
+        // For schemas before this, copy first user from an account_id which
+        // deployed already running VMs
+        s_logger.debug("Updating vm_instance column user_id using first user in vm_instance's account_id");
+        final String vmInstanceSql = "SELECT id, account_id FROM `cloud`.`vm_instance`";
+        final String userSql = "SELECT id FROM `cloud`.`user` where account_id=?";
+        final String userIdUpdateSql = "update `cloud`.`vm_instance` set user_id=? where id=?";
+        try (PreparedStatement selectStatement = conn.prepareStatement(vmInstanceSql)) {
+            final ResultSet results = selectStatement.executeQuery();
+            while (results.next()) {
+                final long vmId = results.getLong(1);
+                final long accountId = results.getLong(2);
+                try (PreparedStatement selectUserStatement = conn.prepareStatement(userSql)) {
+                    selectUserStatement.setLong(1, accountId);
+                    final ResultSet userResults = selectUserStatement.executeQuery();
+                    if (userResults.next()) {
+                        final long userId = userResults.getLong(1);
+                        try (PreparedStatement updateStatement = conn.prepareStatement(userIdUpdateSql)) {
+                            updateStatement.setLong(1, userId);
+                            updateStatement.setLong(2, vmId);
+                            updateStatement.executeUpdate();
+                        } catch (final SQLException e) {
+                            throw new CloudRuntimeException("Unable to update user ID " + userId + " on vm_instance id=" + vmId, e);
+                        }
+                    }
+
+                } catch (final SQLException e) {
+                    throw new CloudRuntimeException("Unable to update user ID using accountId " + accountId + " on vm_instance id=" + vmId, e);
+                }
+            }
+        } catch (final SQLException e) {
+            throw new CloudRuntimeException("Unable to update user Ids for previously deployed VMs", e);
+        }
+        s_logger.debug("Done updating user Ids for previously deployed VMs");
+        addRedundancyForNwAndVpc(conn);
+        removeBumPriorityColumn(conn);
+    }
+
+    private void addRedundancyForNwAndVpc(final Connection conn) {
+        ResultSet rs = null;
+        try (PreparedStatement addRedundantColToVpcOfferingPstmt = conn
+                .prepareStatement("ALTER TABLE `cloud`.`vpc_offerings` ADD COLUMN `redundant_router_service` tinyint(1) DEFAULT 0");
+                PreparedStatement addRedundantColToVpcPstmt = conn.prepareStatement("ALTER TABLE `cloud`.`vpc` ADD COLUMN `redundant` tinyint(1) DEFAULT 0");
+                PreparedStatement addRedundantColToNwPstmt = conn.prepareStatement("ALTER TABLE `cloud`.`networks` ADD COLUMN `redundant` tinyint(1) DEFAULT 0");
+
+                // The redundancy of the networks must be based on the
+                // redundancy of their network offerings
+                PreparedStatement redundancyPerNwPstmt = conn.prepareStatement("select distinct nw.network_offering_id from networks nw join network_offerings off "
+                        + "on nw.network_offering_id = off.id where off.redundant_router_service = 1");
+                PreparedStatement updateNwRedundancyPstmt = conn.prepareStatement("update networks set redundant = 1 where network_offering_id = ?");) {
+            addRedundantColToVpcPstmt.executeUpdate();
+            addRedundantColToVpcOfferingPstmt.executeUpdate();
+            addRedundantColToNwPstmt.executeUpdate();
+
+            rs = redundancyPerNwPstmt.executeQuery();
+            while (rs.next()) {
+                final long nwOfferingId = rs.getLong("nw.network_offering_id");
+                updateNwRedundancyPstmt.setLong(1, nwOfferingId);
+                updateNwRedundancyPstmt.executeUpdate();
+            }
+        } catch (final SQLException e) {
+            e.printStackTrace();
+            throw new CloudRuntimeException("Adding redundancy to vpc, networks and vpc_offerings failed", e);
+        }
+    }
+
+    private void removeBumPriorityColumn(final Connection conn) {
+        try (PreparedStatement removeBumPriorityColumnPstmt = conn.prepareStatement("ALTER TABLE `cloud`.`domain_router` DROP COLUMN `is_priority_bumpup`");) {
+            removeBumPriorityColumnPstmt.executeUpdate();
+        } catch (final SQLException e) {
+            e.printStackTrace();
+            throw new CloudRuntimeException("Adding redundancy to vpc, networks and vpc_offerings failed", e);
+        }
+    }
+
+    private void addIndexForVMInstance(Connection conn) {
+        // Drop index if it exists
+        List<String> indexList = new ArrayList<String>();
+        s_logger.debug("Dropping index i_vm_instance__instance_name from vm_instance table if it exists");
+        indexList.add("i_vm_instance__instance_name");
+        DbUpgradeUtils.dropKeysIfExist(conn, "vm_instance", indexList, false);
+
+        // Now add index
+        try (PreparedStatement pstmt = conn.prepareStatement("ALTER TABLE `cloud`.`vm_instance` ADD INDEX `i_vm_instance__instance_name`(`instance_name`)");) {
+            pstmt.executeUpdate();
+            s_logger.debug("Added index i_vm_instance__instance_name to vm_instance table");
+        } catch (SQLException e) {
+            throw new CloudRuntimeException("Unable to add index i_vm_instance__instance_name to vm_instance table for the column instance_name", e);
+        }
+    }
+
+    @Override
+    public File[] getCleanupScripts() {
+        final String script = Script.findScript("", "db/schema-452to460-cleanup.sql");
+        if (script == null) {
+            throw new CloudRuntimeException("Unable to find db/schema-452to460-cleanup.sql");
+        }
+
+        return new File[] { new File(script) };
+    }
+
+}
\ No newline at end of file
diff --git a/engine/schema/src/com/cloud/usage/dao/UsageDaoImpl.java b/engine/schema/src/com/cloud/usage/dao/UsageDaoImpl.java
index 0d427fe17be..5cab824c415 100644
--- a/engine/schema/src/com/cloud/usage/dao/UsageDaoImpl.java
+++ b/engine/schema/src/com/cloud/usage/dao/UsageDaoImpl.java
@@ -478,6 +478,7 @@ public class UsageDaoImpl extends GenericDaoBase<UsageVO, Long> implements Usage
             usageRecords = searchAndCountAllRecords(sc, usageFilter);
         } catch (Exception e) {
             s_logger.error("getUsageRecordsPendingQuotaAggregation failed due to: " + e.getMessage());
+            throw e;
         } finally {
             TransactionLegacy.open(opendb).close();
         }