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 45c600edcc..acce2d04bf 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
@@ -71,4 +71,6 @@ public interface AlarmDao extends Dao<Alarm> {
     List<EntityAlarm> findEntityAlarmRecords(TenantId tenantId, AlarmId id);
 
     void deleteEntityAlarmRecords(TenantId tenantId, EntityId entityId);
+
+    AlarmInfo acknowledgeAlarm(TenantId tenantId, AlarmId id);
 }
diff --git a/dao/src/main/java/org/thingsboard/server/dao/model/sql/AlarmInfoEntity.java b/dao/src/main/java/org/thingsboard/server/dao/model/sql/AlarmInfoEntity.java
index 69824e6384..8dc86d14e4 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/model/sql/AlarmInfoEntity.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/model/sql/AlarmInfoEntity.java
@@ -17,14 +17,24 @@ package org.thingsboard.server.dao.model.sql;
 
 import lombok.Data;
 import lombok.EqualsAndHashCode;
+import org.hibernate.annotations.TypeDef;
 import org.thingsboard.server.common.data.alarm.AlarmAssignee;
 import org.thingsboard.server.common.data.alarm.AlarmInfo;
 import org.thingsboard.server.common.data.id.UserId;
+import org.thingsboard.server.dao.model.sqlts.latest.TsKvLatestEntity;
+import org.thingsboard.server.dao.sqlts.latest.SearchTsKvLatestRepository;
 
 import javax.persistence.Column;
 import javax.persistence.Entity;
+import javax.persistence.NamedNativeQueries;
+import javax.persistence.NamedNativeQuery;
+import javax.persistence.NamedStoredProcedureQuery;
+import javax.persistence.ParameterMode;
+import javax.persistence.StoredProcedureParameter;
 import javax.persistence.Table;
 
+import java.util.UUID;
+
 import static org.thingsboard.server.dao.model.ModelConstants.ALARM_ASSIGNEE_EMAIL_PROPERTY;
 import static org.thingsboard.server.dao.model.ModelConstants.ALARM_ASSIGNEE_FIRST_NAME_PROPERTY;
 import static org.thingsboard.server.dao.model.ModelConstants.ALARM_ASSIGNEE_LAST_NAME_PROPERTY;
@@ -37,6 +47,13 @@ import static org.thingsboard.server.dao.model.ModelConstants.ALARM_VIEW_NAME;
 @EqualsAndHashCode(callSuper = true)
 @Entity
 @Table(name = ALARM_VIEW_NAME)
+@NamedNativeQueries({
+        @NamedNativeQuery(
+                name = "AlarmEntity.acknowledgeAlarm",
+                query = "SELECT * FROM acknowledge_alarm(:t_id, :a_id, :a_ts)",
+                resultClass = AlarmInfoEntity.class
+        )
+})
 public class AlarmInfoEntity extends AbstractAlarmEntity<AlarmInfo> {
 
     @Column(name = ALARM_ORIGINATOR_NAME_PROPERTY)
diff --git a/dao/src/main/java/org/thingsboard/server/dao/sql/alarm/AlarmRepository.java b/dao/src/main/java/org/thingsboard/server/dao/sql/alarm/AlarmRepository.java
index e52496641a..ff7370671f 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/sql/alarm/AlarmRepository.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/sql/alarm/AlarmRepository.java
@@ -19,6 +19,7 @@ import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.jpa.repository.query.Procedure;
 import org.springframework.data.repository.query.Param;
 import org.thingsboard.server.common.data.alarm.AlarmSeverity;
 import org.thingsboard.server.common.data.alarm.AlarmStatus;
@@ -177,4 +178,9 @@ public interface AlarmRepository extends JpaRepository<AlarmEntity, UUID> {
 
     @Query(value = "SELECT a FROM AlarmInfoEntity a WHERE a.tenantId = :tenantId AND a.id = :alarmId")
     AlarmInfoEntity findAlarmInfoById(@Param("tenantId") UUID tenantId, @Param("alarmId") UUID alarmId);
+
+    // See named native query for definition
+    AlarmInfoEntity acknowledgeAlarm(@Param("t_id") UUID tenantId,
+                                     @Param("a_id") UUID alarmId,
+                                     @Param("a_ts") long ts);
 }
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 bfb3477340..eeb5c98957 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
@@ -48,6 +48,8 @@ import org.thingsboard.server.dao.sql.JpaAbstractDao;
 import org.thingsboard.server.dao.sql.query.AlarmQueryRepository;
 import org.thingsboard.server.dao.util.SqlDao;
 
+import javax.persistence.EntityManager;
+import javax.persistence.PersistenceContext;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.List;
@@ -219,6 +221,11 @@ public class JpaAlarmDao extends JpaAbstractDao<AlarmEntity, Alarm> implements A
         entityAlarmRepository.deleteByEntityId(entityId.getId());
     }
 
+    @Override
+    public AlarmInfo acknowledgeAlarm(TenantId tenantId, AlarmId id) {
+        return DaoUtil.getData(alarmRepository.acknowledgeAlarm(tenantId.getId(), id.getId(), System.currentTimeMillis()));
+    }
+
     @Override
     public EntityType getEntityType() {
         return EntityType.ALARM;
diff --git a/dao/src/main/resources/sql/schema-entities.sql b/dao/src/main/resources/sql/schema-entities.sql
index 2284c68903..c752d35005 100644
--- a/dao/src/main/resources/sql/schema-entities.sql
+++ b/dao/src/main/resources/sql/schema-entities.sql
@@ -831,4 +831,14 @@ COALESCE(CASE WHEN a.originator_type = 0 THEN (select title from tenant where id
     , 'Deleted') as originator_label,
 u.first_name as assignee_first_name, u.last_name as assignee_last_name, u.email as assignee_email
 FROM alarm a
-LEFT JOIN tb_user u ON u.id = a.assignee_id;
\ No newline at end of file
+LEFT JOIN tb_user u ON u.id = a.assignee_id;
+
+DROP FUNCTION IF EXISTS acknowledge_alarm;
+CREATE OR REPLACE FUNCTION acknowledge_alarm(t_id uuid, a_id uuid, a_ts bigint)
+RETURNS alarm_info LANGUAGE plpgsql
+AS $$
+BEGIN
+UPDATE alarm a SET acknowledged = true, ack_ts = a_ts WHERE a.id = a_id AND a.tenant_id = t_id and a.acknowledged = false;
+RETURN (SELECT a FROM alarm_info a WHERE a.tenant_id = t_id AND id = a_id);
+END;
+$$;
diff --git a/dao/src/test/java/org/thingsboard/server/dao/sql/alarm/JpaAlarmDaoTest.java b/dao/src/test/java/org/thingsboard/server/dao/sql/alarm/JpaAlarmDaoTest.java
index 63bc053403..f0fb9cd97d 100644
--- a/dao/src/test/java/org/thingsboard/server/dao/sql/alarm/JpaAlarmDaoTest.java
+++ b/dao/src/test/java/org/thingsboard/server/dao/sql/alarm/JpaAlarmDaoTest.java
@@ -20,8 +20,8 @@ import lombok.extern.slf4j.Slf4j;
 import org.junit.Test;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.thingsboard.server.common.data.alarm.Alarm;
+import org.thingsboard.server.common.data.alarm.AlarmInfo;
 import org.thingsboard.server.common.data.id.AlarmId;
-import org.thingsboard.server.common.data.alarm.AlarmStatus;
 import org.thingsboard.server.common.data.id.DeviceId;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.dao.AbstractJpaDaoTest;
@@ -69,7 +69,17 @@ public class JpaAlarmDaoTest extends AbstractJpaDaoTest {
         assertEquals(alarm2Id, alarm.getId().getId());
     }
 
-    private void saveAlarm(UUID id, UUID tenantId, UUID deviceId, String type) {
+    @Test
+    public void testAckAlarmProcedure() {
+        UUID tenantId = UUID.fromString("d4b68f40-3e96-11e7-a884-898080180d6b");
+        UUID originator1Id = UUID.fromString("d4b68f41-3e96-11e7-a884-898080180d6b");
+        UUID alarm1Id = UUID.fromString("d4b68f43-3e96-11e7-a884-898080180d6b");
+        Alarm alarm = saveAlarm(alarm1Id, tenantId, originator1Id, "TEST_ALARM");
+        AlarmInfo alarmInfo = alarmDao.acknowledgeAlarm(alarm.getTenantId(), alarm.getId());
+        assertNotNull(alarmInfo);
+    }
+
+    private Alarm saveAlarm(UUID id, UUID tenantId, UUID deviceId, String type) {
         Alarm alarm = new Alarm();
         alarm.setId(new AlarmId(id));
         alarm.setTenantId(TenantId.fromUUID(tenantId));
@@ -80,6 +90,7 @@ public class JpaAlarmDaoTest extends AbstractJpaDaoTest {
         alarm.setEndTs(System.currentTimeMillis());
         alarm.setAcknowledged(false);
         alarm.setCleared(false);
-        alarmDao.save(TenantId.fromUUID(tenantId), alarm);
+        return alarmDao.save(TenantId.fromUUID(tenantId), alarm);
     }
+
 }