diff --git a/engine/schema/src/main/java/com/cloud/alert/dao/AlertDaoImpl.java b/engine/schema/src/main/java/com/cloud/alert/dao/AlertDaoImpl.java
index 94d01f472ba..97b7c54f084 100644
--- a/engine/schema/src/main/java/com/cloud/alert/dao/AlertDaoImpl.java
+++ b/engine/schema/src/main/java/com/cloud/alert/dao/AlertDaoImpl.java
@@ -20,6 +20,7 @@ import java.util.Date;
 import java.util.List;
 
 
+import org.apache.commons.collections.CollectionUtils;
 import org.springframework.stereotype.Component;
 
 import com.cloud.alert.AlertVO;
@@ -28,7 +29,7 @@ import com.cloud.utils.db.GenericDaoBase;
 import com.cloud.utils.db.SearchBuilder;
 import com.cloud.utils.db.SearchCriteria;
 import com.cloud.utils.db.SearchCriteria.Op;
-import com.cloud.utils.db.TransactionLegacy;
+import com.cloud.utils.db.UpdateBuilder;
 
 @Component
 public class AlertDaoImpl extends GenericDaoBase<AlertVO, Long> implements AlertDao {
@@ -107,25 +108,20 @@ public class AlertDaoImpl extends GenericDaoBase<AlertVO, Long> implements Alert
         }
         sc.setParameters("archived", false);
 
-        boolean result = true;
-        ;
         List<AlertVO> alerts = listBy(sc);
         if (ids != null && alerts.size() < ids.size()) {
-            result = false;
-            return result;
+            return false;
         }
-        if (alerts != null && !alerts.isEmpty()) {
-            TransactionLegacy txn = TransactionLegacy.currentTxn();
-            txn.start();
-            for (AlertVO alert : alerts) {
-                alert = lockRow(alert.getId(), true);
-                alert.setArchived(true);
-                update(alert.getId(), alert);
-                txn.commit();
-            }
-            txn.close();
+
+        if (CollectionUtils.isEmpty(alerts)) {
+            return true;
         }
-        return result;
+
+        AlertVO alertForUpdate = createForUpdate();
+        alertForUpdate.setArchived(true);
+        UpdateBuilder ub = getUpdateBuilder(alertForUpdate);
+        update(ub, sc, null);
+        return true;
     }
 
     @Override
diff --git a/engine/schema/src/main/java/com/cloud/event/dao/EventDaoImpl.java b/engine/schema/src/main/java/com/cloud/event/dao/EventDaoImpl.java
index e748e98900e..9417ddd1259 100644
--- a/engine/schema/src/main/java/com/cloud/event/dao/EventDaoImpl.java
+++ b/engine/schema/src/main/java/com/cloud/event/dao/EventDaoImpl.java
@@ -18,8 +18,10 @@ package com.cloud.event.dao;
 
 import java.util.Date;
 import java.util.List;
+import java.util.stream.Collectors;
 
 
+import org.apache.commons.collections.CollectionUtils;
 import org.springframework.stereotype.Component;
 
 import com.cloud.event.Event.State;
@@ -29,12 +31,13 @@ import com.cloud.utils.db.GenericDaoBase;
 import com.cloud.utils.db.SearchBuilder;
 import com.cloud.utils.db.SearchCriteria;
 import com.cloud.utils.db.SearchCriteria.Op;
-import com.cloud.utils.db.TransactionLegacy;
+import com.cloud.utils.db.UpdateBuilder;
 
 @Component
 public class EventDaoImpl extends GenericDaoBase<EventVO, Long> implements EventDao {
     protected final SearchBuilder<EventVO> CompletedEventSearch;
     protected final SearchBuilder<EventVO> ToArchiveOrDeleteEventSearch;
+    protected final SearchBuilder<EventVO> ArchiveByIdsSearch;
 
     public EventDaoImpl() {
         CompletedEventSearch = createSearchBuilder();
@@ -51,6 +54,10 @@ public class EventDaoImpl extends GenericDaoBase<EventVO, Long> implements Event
         ToArchiveOrDeleteEventSearch.and("createdDateL", ToArchiveOrDeleteEventSearch.entity().getCreateDate(), Op.LTEQ);
         ToArchiveOrDeleteEventSearch.and("archived", ToArchiveOrDeleteEventSearch.entity().getArchived(), Op.EQ);
         ToArchiveOrDeleteEventSearch.done();
+
+        ArchiveByIdsSearch = createSearchBuilder();
+        ArchiveByIdsSearch.and("id", ArchiveByIdsSearch.entity().getId(), Op.IN);
+        ArchiveByIdsSearch.done();
     }
 
     @Override
@@ -100,16 +107,16 @@ public class EventDaoImpl extends GenericDaoBase<EventVO, Long> implements Event
 
     @Override
     public void archiveEvents(List<EventVO> events) {
-        if (events != null && !events.isEmpty()) {
-            TransactionLegacy txn = TransactionLegacy.currentTxn();
-            txn.start();
-            for (EventVO event : events) {
-                event = lockRow(event.getId(), true);
-                event.setArchived(true);
-                update(event.getId(), event);
-                txn.commit();
-            }
-            txn.close();
+        if (CollectionUtils.isEmpty(events)) {
+            return;
         }
+
+        List<Long> ids = events.stream().map(EventVO::getId).collect(Collectors.toList());
+        SearchCriteria<EventVO> sc = ArchiveByIdsSearch.create();
+        sc.setParameters("id", ids.toArray(new Object[ids.size()]));
+        EventVO eventForUpdate = createForUpdate();
+        eventForUpdate.setArchived(true);
+        UpdateBuilder ub = getUpdateBuilder(eventForUpdate);
+        update(ub, sc, null);
     }
 }
diff --git a/engine/schema/src/main/java/com/cloud/host/dao/HostDaoImpl.java b/engine/schema/src/main/java/com/cloud/host/dao/HostDaoImpl.java
index cd4423dfa26..5b8a38b8e5b 100644
--- a/engine/schema/src/main/java/com/cloud/host/dao/HostDaoImpl.java
+++ b/engine/schema/src/main/java/com/cloud/host/dao/HostDaoImpl.java
@@ -646,16 +646,22 @@ public class HostDaoImpl extends GenericDaoBase<HostVO, Long> implements HostDao
         sc.setParameters("lastPinged", lastPingSecondsAfter);
         sc.setParameters("status", Status.Disconnected, Status.Down, Status.Alert);
 
-        StringBuilder sb = new StringBuilder();
-        List<HostVO> hosts = lockRows(sc, null, true); // exclusive lock
-        for (HostVO host : hosts) {
-            host.setManagementServerId(null);
-            update(host.getId(), host);
-            sb.append(host.getId());
-            sb.append(" ");
+        // SELECT before bulk UPDATE to preserve per-host-ID trace logging — the bulk UPDATE
+        // cannot return which rows it matched since the WHERE column is being set to NULL
+        if (logger.isTraceEnabled()) {
+            List<HostVO> hosts = listBy(sc);
+            StringBuilder sb = new StringBuilder();
+            for (HostVO host : hosts) {
+                sb.append(host.getId());
+                sb.append(" ");
+            }
+            logger.trace("Following hosts will be reset: {}", sb);
         }
 
-        logger.trace("Following hosts got reset: {}", sb);
+        HostVO host = createForUpdate();
+        host.setManagementServerId(null);
+        UpdateBuilder ub = getUpdateBuilder(host);
+        update(ub, sc, null);
     }
 
     /*
diff --git a/engine/schema/src/main/java/com/cloud/network/security/dao/SecurityGroupWorkDaoImpl.java b/engine/schema/src/main/java/com/cloud/network/security/dao/SecurityGroupWorkDaoImpl.java
index 327d12c759a..3180ef30a3c 100644
--- a/engine/schema/src/main/java/com/cloud/network/security/dao/SecurityGroupWorkDaoImpl.java
+++ b/engine/schema/src/main/java/com/cloud/network/security/dao/SecurityGroupWorkDaoImpl.java
@@ -116,7 +116,7 @@ public class SecurityGroupWorkDaoImpl extends GenericDaoBase<SecurityGroupWorkVO
                 //ensure that there is no job in Processing state for the same VM
                 processing = true;
                 if (logger.isTraceEnabled()) {
-                    logger.trace("Security Group work take: found a job in Scheduled and Processing  vmid=" + work.getInstanceId());
+                    logger.trace("Security Group work take: found a job in Scheduled and Processing vmid={}", work.getInstanceId());
                 }
             }
             work.setServerId(serverId);
@@ -141,26 +141,16 @@ public class SecurityGroupWorkDaoImpl extends GenericDaoBase<SecurityGroupWorkVO
     }
 
     @Override
-    @DB
     public void updateStep(Long vmId, Long logSequenceNumber, Step step) {
-        final TransactionLegacy txn = TransactionLegacy.currentTxn();
-        txn.start();
         SearchCriteria<SecurityGroupWorkVO> sc = VmIdSeqNumSearch.create();
         sc.setParameters("vmId", vmId);
         sc.setParameters("seqno", logSequenceNumber);
 
-        final Filter filter = new Filter(SecurityGroupWorkVO.class, null, true, 0l, 1l);
-
-        final List<SecurityGroupWorkVO> vos = lockRows(sc, filter, true);
-        if (vos.size() == 0) {
-            txn.commit();
-            return;
-        }
-        SecurityGroupWorkVO work = vos.get(0);
-        work.setStep(step);
-        update(work.getId(), work);
-
-        txn.commit();
+        SecurityGroupWorkVO workForUpdate = createForUpdate();
+        workForUpdate.setStep(step);
+        // LIMIT 1 preserves the original single-row semantics: op_nwgrp_work has no
+        // uniqueness on (instance_id, seq_no), so without it duplicate rows would all be updated.
+        update(workForUpdate, sc, 1);
     }
 
     @Override
@@ -172,21 +162,10 @@ public class SecurityGroupWorkDaoImpl extends GenericDaoBase<SecurityGroupWorkVO
     }
 
     @Override
-    @DB
     public void updateStep(Long workId, Step step) {
-        final TransactionLegacy txn = TransactionLegacy.currentTxn();
-        txn.start();
-
-        SecurityGroupWorkVO work = lockRow(workId, true);
-        if (work == null) {
-            txn.commit();
-            return;
-        }
-        work.setStep(step);
-        update(work.getId(), work);
-
-        txn.commit();
-
+        SecurityGroupWorkVO workForUpdate = createForUpdate();
+        workForUpdate.setStep(step);
+        update(workId, workForUpdate);
     }
 
     @Override