diff --git a/common/dao-api/src/main/java/org/thingsboard/server/dao/alarm/AlarmService.java b/common/dao-api/src/main/java/org/thingsboard/server/dao/alarm/AlarmService.java
index 5c8b88e4b8..838eeb83b2 100644
--- a/common/dao-api/src/main/java/org/thingsboard/server/dao/alarm/AlarmService.java
+++ b/common/dao-api/src/main/java/org/thingsboard/server/dao/alarm/AlarmService.java
@@ -129,6 +129,8 @@ public interface AlarmService extends EntityDaoService {
 
     void deleteEntityAlarmRelations(TenantId tenantId, EntityId entityId);
 
+    void deleteEntityAlarmRecordsByTenantId(TenantId tenantId);
+
     long countAlarmsByQuery(TenantId tenantId, CustomerId customerId, AlarmCountQuery query);
 
     PageData<EntitySubtype> findAlarmTypesByTenantId(TenantId tenantId, PageLink pageLink);
diff --git a/common/dao-api/src/main/java/org/thingsboard/server/dao/entityview/EntityViewService.java b/common/dao-api/src/main/java/org/thingsboard/server/dao/entityview/EntityViewService.java
index ea9dc31b45..09bad2b48d 100644
--- a/common/dao-api/src/main/java/org/thingsboard/server/dao/entityview/EntityViewService.java
+++ b/common/dao-api/src/main/java/org/thingsboard/server/dao/entityview/EntityViewService.java
@@ -76,6 +76,8 @@ public interface EntityViewService extends EntityDaoService {
 
     List<EntityView> findEntityViewsByTenantIdAndEntityId(TenantId tenantId, EntityId entityId);
 
+    boolean existsByTenantIdAndEntityId(TenantId tenantId, EntityId entityId);
+
     void deleteEntityView(TenantId tenantId, EntityViewId entityViewId);
 
     void deleteEntityViewsByTenantId(TenantId tenantId);
diff --git a/dao/src/main/java/org/thingsboard/server/dao/alarm/AlarmDao.java b/dao/src/main/java/org/thingsboard/server/dao/alarm/AlarmDao.java
index 2b6594a831..9028bf33d4 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/alarm/AlarmDao.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/alarm/AlarmDao.java
@@ -86,6 +86,8 @@ public interface AlarmDao extends Dao<Alarm> {
 
     void deleteEntityAlarmRecords(TenantId tenantId, EntityId entityId);
 
+    void deleteEntityAlarmRecordsByTenantId(TenantId tenantId);
+
     AlarmApiCallResult createOrUpdateActiveAlarm(AlarmCreateOrUpdateActiveRequest request, boolean alarmCreationEnabled);
 
     AlarmApiCallResult updateAlarm(AlarmUpdateRequest request);
diff --git a/dao/src/main/java/org/thingsboard/server/dao/alarm/BaseAlarmService.java b/dao/src/main/java/org/thingsboard/server/dao/alarm/BaseAlarmService.java
index 33f6ac0265..34dd9625dc 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/alarm/BaseAlarmService.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/alarm/BaseAlarmService.java
@@ -440,9 +440,15 @@ public class BaseAlarmService extends AbstractCachedEntityService<TenantId, Page
 
     @Override
     public void deleteEntityAlarmRelations(TenantId tenantId, EntityId entityId) {
+        log.trace("Executing deleteEntityAlarms [{}]", entityId);
         alarmDao.deleteEntityAlarmRecords(tenantId, entityId);
     }
 
+    @Override
+    public void deleteEntityAlarmRecordsByTenantId(TenantId tenantId) {
+        alarmDao.deleteEntityAlarmRecordsByTenantId(tenantId);
+    }
+
     @Override
     public long countAlarmsByQuery(TenantId tenantId, CustomerId customerId, AlarmCountQuery query) {
         validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
diff --git a/dao/src/main/java/org/thingsboard/server/dao/asset/BaseAssetService.java b/dao/src/main/java/org/thingsboard/server/dao/asset/BaseAssetService.java
index d8ab8f368b..24a31e2579 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/asset/BaseAssetService.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/asset/BaseAssetService.java
@@ -26,7 +26,6 @@ import org.springframework.transaction.annotation.Transactional;
 import org.springframework.transaction.event.TransactionalEventListener;
 import org.thingsboard.server.common.data.EntitySubtype;
 import org.thingsboard.server.common.data.EntityType;
-import org.thingsboard.server.common.data.EntityView;
 import org.thingsboard.server.common.data.StringUtils;
 import org.thingsboard.server.common.data.asset.Asset;
 import org.thingsboard.server.common.data.asset.AssetInfo;
@@ -207,19 +206,23 @@ public class BaseAssetService extends AbstractCachedEntityService<AssetCacheKey,
     public void deleteAsset(TenantId tenantId, AssetId assetId) {
         log.trace("Executing deleteAsset [{}]", assetId);
         validateId(assetId, INCORRECT_ASSET_ID + assetId);
-        deleteEntityRelations(tenantId, assetId);
-
-        Asset asset = assetDao.findById(tenantId, assetId.getId());
-        List<EntityView> entityViews = entityViewService.findEntityViewsByTenantIdAndEntityId(asset.getTenantId(), assetId);
-        if (entityViews != null && !entityViews.isEmpty()) {
+        if (entityViewService.existsByTenantIdAndEntityId(tenantId, assetId)) {
             throw new DataValidationException("Can't delete asset that has entity views!");
         }
 
+        Asset asset = assetDao.findById(tenantId, assetId.getId());
+        alarmService.deleteEntityAlarmRelations(tenantId, assetId);
+        deleteAsset(tenantId, asset);
+    }
+
+    private void deleteAsset(TenantId tenantId, Asset asset) {
+        relationService.deleteEntityRelations(tenantId, asset.getAssetProfileId());
+
+        assetDao.removeById(tenantId, asset.getUuidId());
+
         publishEvictEvent(new AssetCacheEvictEvent(asset.getTenantId(), asset.getName(), null));
         countService.publishCountEntityEvictEvent(tenantId, EntityType.ASSET);
-        eventPublisher.publishEvent(DeleteEntityEvent.builder().tenantId(tenantId).entityId(assetId).build());
-
-        assetDao.removeById(tenantId, assetId.getId());
+        eventPublisher.publishEvent(DeleteEntityEvent.builder().tenantId(tenantId).entityId(asset.getId()).build());
     }
 
     @Override
@@ -273,6 +276,7 @@ public class BaseAssetService extends AbstractCachedEntityService<AssetCacheKey,
         return assetDao.findAssetsByTenantIdAndIdsAsync(tenantId.getId(), toUUIDs(assetIds));
     }
 
+    @Transactional
     @Override
     public void deleteAssetsByTenantId(TenantId tenantId) {
         log.trace("Executing deleteAssetsByTenantId, tenantId [{}]", tenantId);
@@ -438,21 +442,20 @@ public class BaseAssetService extends AbstractCachedEntityService<AssetCacheKey,
         return assetDao.findAssetsByTenantIdAndEdgeIdAndType(tenantId.getId(), edgeId.getId(), type, pageLink);
     }
 
-    private PaginatedRemover<TenantId, Asset> tenantAssetsRemover =
-            new PaginatedRemover<TenantId, Asset>() {
+    private final PaginatedRemover<TenantId, Asset> tenantAssetsRemover = new PaginatedRemover<>() {
 
-                @Override
-                protected PageData<Asset> findEntities(TenantId tenantId, TenantId id, PageLink pageLink) {
-                    return assetDao.findAssetsByTenantId(id.getId(), pageLink);
-                }
+        @Override
+        protected PageData<Asset> findEntities(TenantId tenantId, TenantId id, PageLink pageLink) {
+            return assetDao.findAssetsByTenantId(id.getId(), pageLink);
+        }
 
-                @Override
-                protected void removeEntity(TenantId tenantId, Asset entity) {
-                    deleteAsset(tenantId, new AssetId(entity.getId().getId()));
-                }
+        @Override
+        protected void removeEntity(TenantId tenantId, Asset asset) {
+            deleteAsset(tenantId, asset);
+        }
             };
 
-    private PaginatedRemover<CustomerId, Asset> customerAssetsUnasigner = new PaginatedRemover<CustomerId, Asset>() {
+    private final PaginatedRemover<CustomerId, Asset> customerAssetsUnasigner = new PaginatedRemover<CustomerId, Asset>() {
 
         @Override
         protected PageData<Asset> findEntities(TenantId tenantId, CustomerId id, PageLink pageLink) {
diff --git a/dao/src/main/java/org/thingsboard/server/dao/dashboard/DashboardDao.java b/dao/src/main/java/org/thingsboard/server/dao/dashboard/DashboardDao.java
index 387dc96554..b23bc516bb 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/dashboard/DashboardDao.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/dashboard/DashboardDao.java
@@ -18,6 +18,8 @@ package org.thingsboard.server.dao.dashboard;
 import org.thingsboard.server.common.data.Dashboard;
 import org.thingsboard.server.common.data.id.DashboardId;
 import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.common.data.page.PageData;
+import org.thingsboard.server.common.data.page.PageLink;
 import org.thingsboard.server.dao.Dao;
 import org.thingsboard.server.dao.ExportableEntityDao;
 import org.thingsboard.server.dao.TenantEntityDao;
@@ -40,4 +42,6 @@ public interface DashboardDao extends Dao<Dashboard>, TenantEntityDao, Exportabl
 
     List<Dashboard> findByTenantIdAndTitle(UUID tenantId, String title);
 
+    PageData<DashboardId> findIdsByTenantId(TenantId tenantId, PageLink pageLink);
+
 }
diff --git a/dao/src/main/java/org/thingsboard/server/dao/dashboard/DashboardServiceImpl.java b/dao/src/main/java/org/thingsboard/server/dao/dashboard/DashboardServiceImpl.java
index c74aba5d5c..be1739bc7a 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/dashboard/DashboardServiceImpl.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/dashboard/DashboardServiceImpl.java
@@ -364,19 +364,18 @@ public class DashboardServiceImpl extends AbstractEntityService implements Dashb
         return dashboardDao.findByTenantIdAndTitle(tenantId.getId(), title);
     }
 
-    private PaginatedRemover<TenantId, DashboardInfo> tenantDashboardsRemover =
-            new PaginatedRemover<TenantId, DashboardInfo>() {
-
-                @Override
-                protected PageData<DashboardInfo> findEntities(TenantId tenantId, TenantId id, PageLink pageLink) {
-                    return dashboardInfoDao.findDashboardsByTenantId(id.getId(), pageLink);
-                }
-
-                @Override
-                protected void removeEntity(TenantId tenantId, DashboardInfo entity) {
-                    deleteDashboard(tenantId, new DashboardId(entity.getUuidId()));
-                }
-            };
+    private final PaginatedRemover<TenantId, DashboardId> tenantDashboardsRemover = new PaginatedRemover<>() {
+
+        @Override
+        protected PageData<DashboardId> findEntities(TenantId tenantId, TenantId id, PageLink pageLink) {
+            return dashboardDao.findIdsByTenantId(id, pageLink);
+        }
+
+        @Override
+        protected void removeEntity(TenantId tenantId, DashboardId dashboardId) {
+            deleteDashboard(tenantId, dashboardId);
+        }
+    };
 
     @Override
     public Optional<HasId<?>> findEntity(TenantId tenantId, EntityId entityId) {
diff --git a/dao/src/main/java/org/thingsboard/server/dao/device/DeviceServiceImpl.java b/dao/src/main/java/org/thingsboard/server/dao/device/DeviceServiceImpl.java
index 57b4c9dbe8..59d70b9ed0 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/device/DeviceServiceImpl.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/device/DeviceServiceImpl.java
@@ -318,24 +318,28 @@ public class DeviceServiceImpl extends AbstractCachedEntityService<DeviceCacheKe
     public void deleteDevice(final TenantId tenantId, final DeviceId deviceId) {
         log.trace("Executing deleteDevice [{}]", deviceId);
         validateId(deviceId, INCORRECT_DEVICE_ID + deviceId);
-
-        Device device = deviceDao.findById(tenantId, deviceId.getId());
-        DeviceCacheEvictEvent deviceCacheEvictEvent = new DeviceCacheEvictEvent(device.getTenantId(), device.getId(), device.getName(), null);
-        List<EntityView> entityViews = entityViewService.findEntityViewsByTenantIdAndEntityId(device.getTenantId(), deviceId);
-        if (entityViews != null && !entityViews.isEmpty()) {
+        if (entityViewService.existsByTenantIdAndEntityId(tenantId, deviceId)) {
             throw new DataValidationException("Can't delete device that has entity views!");
         }
-        DeviceCredentials deviceCredentials = deviceCredentialsService.findDeviceCredentialsByDeviceId(tenantId, deviceId);
+
+        Device device = deviceDao.findById(tenantId, deviceId.getId());
+        alarmService.deleteEntityAlarmRelations(tenantId, deviceId);
+        deleteDevice(tenantId, device);
+    }
+
+    private void deleteDevice(TenantId tenantId, Device device) {
+        DeviceCredentials deviceCredentials = deviceCredentialsService.findDeviceCredentialsByDeviceId(tenantId, device.getId());
         if (deviceCredentials != null) {
             deviceCredentialsService.deleteDeviceCredentials(tenantId, deviceCredentials);
         }
-        deleteEntityRelations(tenantId, deviceId);
+        relationService.deleteEntityRelations(tenantId, device.getId());
 
-        deviceDao.removeById(tenantId, deviceId.getId());
+        deviceDao.removeById(tenantId, device.getUuidId());
 
+        DeviceCacheEvictEvent deviceCacheEvictEvent = new DeviceCacheEvictEvent(device.getTenantId(), device.getId(), device.getName(), null);
         publishEvictEvent(deviceCacheEvictEvent);
         countService.publishCountEntityEvictEvent(tenantId, EntityType.DEVICE);
-        eventPublisher.publishEvent(DeleteEntityEvent.builder().tenantId(tenantId).entityId(deviceId).build());
+        eventPublisher.publishEvent(DeleteEntityEvent.builder().tenantId(tenantId).entityId(device.getId()).build());
     }
 
     @Override
@@ -650,21 +654,20 @@ public class DeviceServiceImpl extends AbstractCachedEntityService<DeviceCacheKe
         deleteDevice(tenantId, (DeviceId) id);
     }
 
-    private PaginatedRemover<TenantId, Device> tenantDevicesRemover =
-            new PaginatedRemover<>() {
+    private final PaginatedRemover<TenantId, Device> tenantDevicesRemover = new PaginatedRemover<>() {
 
-                @Override
-                protected PageData<Device> findEntities(TenantId tenantId, TenantId id, PageLink pageLink) {
-                    return deviceDao.findDevicesByTenantId(id.getId(), pageLink);
-                }
+        @Override
+        protected PageData<Device> findEntities(TenantId tenantId, TenantId id, PageLink pageLink) {
+            return deviceDao.findDevicesByTenantId(id.getId(), pageLink);
+        }
 
-                @Override
-                protected void removeEntity(TenantId tenantId, Device entity) {
-                    deleteDevice(tenantId, new DeviceId(entity.getUuidId()));
-                }
-            };
+        @Override
+        protected void removeEntity(TenantId tenantId, Device device) {
+            deleteDevice(tenantId, device);
+        }
+    };
 
-    private PaginatedRemover<CustomerId, Device> customerDeviceUnasigner = new PaginatedRemover<CustomerId, Device>() {
+    private final PaginatedRemover<CustomerId, Device> customerDeviceUnasigner = new PaginatedRemover<CustomerId, Device>() {
 
         @Override
         protected PageData<Device> findEntities(TenantId tenantId, CustomerId id, PageLink pageLink) {
diff --git a/dao/src/main/java/org/thingsboard/server/dao/entity/AbstractEntityService.java b/dao/src/main/java/org/thingsboard/server/dao/entity/AbstractEntityService.java
index 17cd7a15d4..7c77f48710 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/entity/AbstractEntityService.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/entity/AbstractEntityService.java
@@ -74,9 +74,7 @@ public abstract class AbstractEntityService {
     }
 
     protected void deleteEntityRelations(TenantId tenantId, EntityId entityId) {
-        log.trace("Executing deleteEntityRelations [{}]", entityId);
         relationService.deleteEntityRelations(tenantId, entityId);
-        log.trace("Executing deleteEntityAlarms [{}]", entityId);
         alarmService.deleteEntityAlarmRelations(tenantId, entityId);
     }
 
diff --git a/dao/src/main/java/org/thingsboard/server/dao/entityview/EntityViewDao.java b/dao/src/main/java/org/thingsboard/server/dao/entityview/EntityViewDao.java
index 132d26a406..7ce2c6fabf 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/entityview/EntityViewDao.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/entityview/EntityViewDao.java
@@ -148,6 +148,8 @@ public interface EntityViewDao extends Dao<EntityView>, ExportableEntityDao<Enti
 
     List<EntityView> findEntityViewsByTenantIdAndEntityId(UUID tenantId, UUID entityId);
 
+    boolean existsByTenantIdAndEntityId(UUID tenantId, UUID entityId);
+
     /**
      * Find tenants entity view types.
      *
diff --git a/dao/src/main/java/org/thingsboard/server/dao/entityview/EntityViewServiceImpl.java b/dao/src/main/java/org/thingsboard/server/dao/entityview/EntityViewServiceImpl.java
index 4335fa5f1c..5006a2ff55 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/entityview/EntityViewServiceImpl.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/entityview/EntityViewServiceImpl.java
@@ -316,6 +316,11 @@ public class EntityViewServiceImpl extends AbstractCachedEntityService<EntityVie
                 EntityViewCacheValue::getEntityViews, v -> new EntityViewCacheValue(null, v), true);
     }
 
+    @Override
+    public boolean existsByTenantIdAndEntityId(TenantId tenantId, EntityId entityId) {
+        return entityViewDao.existsByTenantIdAndEntityId(tenantId.getId(), entityId.getId());
+    }
+
     @Override
     @Transactional
     public void deleteEntityView(TenantId tenantId, EntityViewId entityViewId) {
diff --git a/dao/src/main/java/org/thingsboard/server/dao/service/PaginatedRemover.java b/dao/src/main/java/org/thingsboard/server/dao/service/PaginatedRemover.java
index fb98a01178..c7b1173c58 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/service/PaginatedRemover.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/service/PaginatedRemover.java
@@ -15,12 +15,11 @@
  */
 package org.thingsboard.server.dao.service;
 
-import org.thingsboard.server.common.data.id.IdBased;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.page.PageData;
 import org.thingsboard.server.common.data.page.PageLink;
 
-public abstract class PaginatedRemover<I, D extends IdBased<?>> {
+public abstract class PaginatedRemover<I, D> {
 
     private static final int DEFAULT_LIMIT = 100;
 
diff --git a/dao/src/main/java/org/thingsboard/server/dao/sql/alarm/EntityAlarmRepository.java b/dao/src/main/java/org/thingsboard/server/dao/sql/alarm/EntityAlarmRepository.java
index ac27435df1..f6250e98f0 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/sql/alarm/EntityAlarmRepository.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/sql/alarm/EntityAlarmRepository.java
@@ -34,4 +34,8 @@ public interface EntityAlarmRepository extends JpaRepository<EntityAlarmEntity,
     @Modifying
     @Query("DELETE FROM EntityAlarmEntity e where e.entityId = :entityId")
     void deleteByEntityId(@Param("entityId") UUID entityId);
+
+    @Transactional
+    void deleteByTenantId(UUID tenantId);
+
 }
diff --git a/dao/src/main/java/org/thingsboard/server/dao/sql/alarm/JpaAlarmDao.java b/dao/src/main/java/org/thingsboard/server/dao/sql/alarm/JpaAlarmDao.java
index 358c4aa019..9aca74029a 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/sql/alarm/JpaAlarmDao.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/sql/alarm/JpaAlarmDao.java
@@ -310,10 +310,14 @@ public class JpaAlarmDao extends JpaAbstractDao<AlarmEntity, Alarm> implements A
 
     @Override
     public void deleteEntityAlarmRecords(TenantId tenantId, EntityId entityId) {
-        log.trace("[{}] Try to delete entity alarm records using [{}]", tenantId, entityId);
         entityAlarmRepository.deleteByEntityId(entityId.getId());
     }
 
+    @Override
+    public void deleteEntityAlarmRecordsByTenantId(TenantId tenantId) {
+        entityAlarmRepository.deleteByTenantId(tenantId.getId());
+    }
+
     @Override
     public AlarmApiCallResult createOrUpdateActiveAlarm(AlarmCreateOrUpdateActiveRequest request, boolean alarmCreationEnabled) {
         AlarmPropagationInfo ap = getSafePropagationInfo(request.getPropagation());
diff --git a/dao/src/main/java/org/thingsboard/server/dao/sql/dashboard/DashboardRepository.java b/dao/src/main/java/org/thingsboard/server/dao/sql/dashboard/DashboardRepository.java
index 1ee316bb7d..ee6b59e30b 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/sql/dashboard/DashboardRepository.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/sql/dashboard/DashboardRepository.java
@@ -40,4 +40,7 @@ public interface DashboardRepository extends JpaRepository<DashboardEntity, UUID
     @Query("SELECT externalId FROM DashboardEntity WHERE id = :id")
     UUID getExternalIdById(@Param("id") UUID id);
 
+    @Query("SELECT d.id FROM DashboardEntity d WHERE d.tenantId = :tenantId")
+    Page<UUID> findIdsByTenantId(@Param("tenantId") UUID tenantId, Pageable pageable);
+
 }
diff --git a/dao/src/main/java/org/thingsboard/server/dao/sql/dashboard/JpaDashboardDao.java b/dao/src/main/java/org/thingsboard/server/dao/sql/dashboard/JpaDashboardDao.java
index 35e746bc05..9353a4dbde 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/sql/dashboard/JpaDashboardDao.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/sql/dashboard/JpaDashboardDao.java
@@ -80,6 +80,11 @@ public class JpaDashboardDao extends JpaAbstractDao<DashboardEntity, Dashboard>
         return DaoUtil.convertDataList(dashboardRepository.findByTenantIdAndTitle(tenantId, title));
     }
 
+    @Override
+    public PageData<DashboardId> findIdsByTenantId(TenantId tenantId, PageLink pageLink) {
+        return DaoUtil.pageToPageData(dashboardRepository.findIdsByTenantId(tenantId.getId(), DaoUtil.toPageable(pageLink)).map(DashboardId::new));
+    }
+
     @Override
     public EntityType getEntityType() {
         return EntityType.DASHBOARD;
diff --git a/dao/src/main/java/org/thingsboard/server/dao/sql/device/DeviceCredentialsRepository.java b/dao/src/main/java/org/thingsboard/server/dao/sql/device/DeviceCredentialsRepository.java
index 16bde4178c..8eb334ae61 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/sql/device/DeviceCredentialsRepository.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/sql/device/DeviceCredentialsRepository.java
@@ -28,4 +28,5 @@ public interface DeviceCredentialsRepository extends JpaRepository<DeviceCredent
     DeviceCredentialsEntity findByDeviceId(UUID deviceId);
 
     DeviceCredentialsEntity findByCredentialsId(String credentialsId);
+
 }
diff --git a/dao/src/main/java/org/thingsboard/server/dao/sql/device/JpaDeviceCredentialsDao.java b/dao/src/main/java/org/thingsboard/server/dao/sql/device/JpaDeviceCredentialsDao.java
index f9450461ab..ebc5a6ef2a 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/sql/device/JpaDeviceCredentialsDao.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/sql/device/JpaDeviceCredentialsDao.java
@@ -66,4 +66,5 @@ public class JpaDeviceCredentialsDao extends JpaAbstractDao<DeviceCredentialsEnt
     public DeviceCredentials findByCredentialsId(TenantId tenantId, String credentialsId) {
         return DaoUtil.getData(deviceCredentialsRepository.findByCredentialsId(credentialsId));
     }
+
 }
diff --git a/dao/src/main/java/org/thingsboard/server/dao/sql/entityview/EntityViewRepository.java b/dao/src/main/java/org/thingsboard/server/dao/sql/entityview/EntityViewRepository.java
index 1478e23a54..62fb8103d9 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/sql/entityview/EntityViewRepository.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/sql/entityview/EntityViewRepository.java
@@ -118,6 +118,8 @@ public interface EntityViewRepository extends JpaRepository<EntityViewEntity, UU
 
     List<EntityViewEntity> findAllByTenantIdAndEntityId(UUID tenantId, UUID entityId);
 
+    boolean existsByTenantIdAndEntityId(UUID tenantId, UUID entityId);
+
     @Query("SELECT DISTINCT ev.type FROM EntityViewEntity ev WHERE ev.tenantId = :tenantId")
     List<String> findTenantEntityViewTypes(@Param("tenantId") UUID tenantId);
 
diff --git a/dao/src/main/java/org/thingsboard/server/dao/sql/entityview/JpaEntityViewDao.java b/dao/src/main/java/org/thingsboard/server/dao/sql/entityview/JpaEntityViewDao.java
index e3e9edf80d..1f15318d45 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/sql/entityview/JpaEntityViewDao.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/sql/entityview/JpaEntityViewDao.java
@@ -165,6 +165,11 @@ public class JpaEntityViewDao extends JpaAbstractDao<EntityViewEntity, EntityVie
                 entityViewRepository.findAllByTenantIdAndEntityId(tenantId, entityId));
     }
 
+    @Override
+    public boolean existsByTenantIdAndEntityId(UUID tenantId, UUID entityId) {
+        return entityViewRepository.existsByTenantIdAndEntityId(tenantId, entityId);
+    }
+
     @Override
     public ListenableFuture<List<EntitySubtype>> findTenantEntityViewTypesAsync(UUID tenantId) {
         return service.submit(() -> convertTenantEntityTypesToDto(tenantId, EntityType.ENTITY_VIEW, entityViewRepository.findTenantEntityViewTypes(tenantId)));
diff --git a/dao/src/main/java/org/thingsboard/server/dao/sql/user/JpaUserCredentialsDao.java b/dao/src/main/java/org/thingsboard/server/dao/sql/user/JpaUserCredentialsDao.java
index e5fcd5bbf8..8ac3c1cf55 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/sql/user/JpaUserCredentialsDao.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/sql/user/JpaUserCredentialsDao.java
@@ -19,6 +19,7 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Component;
 import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.common.data.id.UserId;
 import org.thingsboard.server.common.data.security.UserCredentials;
 import org.thingsboard.server.dao.DaoUtil;
 import org.thingsboard.server.dao.model.sql.UserCredentialsEntity;
@@ -62,4 +63,10 @@ public class JpaUserCredentialsDao extends JpaAbstractDao<UserCredentialsEntity,
     public UserCredentials findByResetToken(TenantId tenantId, String resetToken) {
         return DaoUtil.getData(userCredentialsRepository.findByResetToken(resetToken));
     }
+
+    @Override
+    public void removeByUserId(TenantId tenantId, UserId userId) {
+        userCredentialsRepository.removeByUserId(userId.getId());
+    }
+
 }
diff --git a/dao/src/main/java/org/thingsboard/server/dao/sql/user/UserCredentialsRepository.java b/dao/src/main/java/org/thingsboard/server/dao/sql/user/UserCredentialsRepository.java
index 1cfc8b350c..46c2054016 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/sql/user/UserCredentialsRepository.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/sql/user/UserCredentialsRepository.java
@@ -16,6 +16,7 @@
 package org.thingsboard.server.dao.sql.user;
 
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.transaction.annotation.Transactional;
 import org.thingsboard.server.dao.model.sql.UserCredentialsEntity;
 
 import java.util.UUID;
@@ -30,4 +31,8 @@ public interface UserCredentialsRepository extends JpaRepository<UserCredentials
     UserCredentialsEntity findByActivateToken(String activateToken);
 
     UserCredentialsEntity findByResetToken(String resetToken);
+
+    @Transactional
+    void removeByUserId(UUID userId);
+
 }
diff --git a/dao/src/main/java/org/thingsboard/server/dao/tenant/TenantServiceImpl.java b/dao/src/main/java/org/thingsboard/server/dao/tenant/TenantServiceImpl.java
index 550c259f38..0f1b60ecb5 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/tenant/TenantServiceImpl.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/tenant/TenantServiceImpl.java
@@ -245,7 +245,8 @@ public class TenantServiceImpl extends AbstractCachedEntityService<TenantId, Ten
         tenantDao.removeById(tenantId, tenantId.getId());
         publishEvictEvent(new TenantEvictEvent(tenantId, true));
         eventPublisher.publishEvent(DeleteEntityEvent.builder().tenantId(TenantId.SYS_TENANT_ID).entityId(tenantId).build());
-        deleteEntityRelations(tenantId, tenantId);
+        relationService.deleteEntityRelations(tenantId, tenantId);
+        alarmService.deleteEntityAlarmRecordsByTenantId(tenantId);
     }
 
     @Override
diff --git a/dao/src/main/java/org/thingsboard/server/dao/user/UserCredentialsDao.java b/dao/src/main/java/org/thingsboard/server/dao/user/UserCredentialsDao.java
index c3f19f2590..b40121a718 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/user/UserCredentialsDao.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/user/UserCredentialsDao.java
@@ -16,6 +16,7 @@
 package org.thingsboard.server.dao.user;
 
 import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.common.data.id.UserId;
 import org.thingsboard.server.common.data.security.UserCredentials;
 import org.thingsboard.server.dao.Dao;
 
@@ -58,4 +59,6 @@ public interface UserCredentialsDao extends Dao<UserCredentials> {
      */
     UserCredentials findByResetToken(TenantId tenantId, String resetToken);
 
+    void removeByUserId(TenantId tenantId, UserId userId);
+
 }
diff --git a/dao/src/main/java/org/thingsboard/server/dao/user/UserServiceImpl.java b/dao/src/main/java/org/thingsboard/server/dao/user/UserServiceImpl.java
index 9776e5fe51..4db1eb668a 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/user/UserServiceImpl.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/user/UserServiceImpl.java
@@ -252,10 +252,10 @@ public class UserServiceImpl extends AbstractEntityService implements UserServic
         UserId userId = user.getId();
         log.trace("[{}] Executing deleteUser [{}]", tenantId, userId);
         validateId(userId, INCORRECT_USER_ID + userId);
-        UserCredentials userCredentials = userCredentialsDao.findByUserId(tenantId, userId.getId());
-        userCredentialsDao.removeById(tenantId, userCredentials.getUuidId());
+        userCredentialsDao.removeByUserId(tenantId, userId);
         userAuthSettingsDao.removeByUserId(userId);
         deleteEntityRelations(tenantId, userId);
+
         userDao.removeById(tenantId, userId.getId());
         eventPublisher.publishEvent(new UserCredentialsInvalidationEvent(userId));
         countService.publishCountEntityEvictEvent(tenantId, EntityType.USER);
@@ -446,8 +446,8 @@ public class UserServiceImpl extends AbstractEntityService implements UserServic
         }
 
         @Override
-        protected void removeEntity(TenantId tenantId, User entity) {
-            deleteUser(tenantId, entity);
+        protected void removeEntity(TenantId tenantId, User user) {
+            deleteUser(tenantId, user);
         }
     };