diff --git a/src/main/java/com/eactive/eai/rms/onl/common/service/UmsDispatchJob.java b/src/main/java/com/eactive/eai/rms/onl/common/service/UmsDispatchJob.java
index 993e165..af91e13 100644
--- a/src/main/java/com/eactive/eai/rms/onl/common/service/UmsDispatchJob.java
+++ b/src/main/java/com/eactive/eai/rms/onl/common/service/UmsDispatchJob.java
@@ -3,6 +3,7 @@ package com.eactive.eai.rms.onl.common.service;
 import com.eactive.eai.rms.onl.common.service.ums.UmsDispatchService;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.lang3.StringUtils;
+import org.quartz.DisallowConcurrentExecution;
 import org.quartz.Job;
 import org.quartz.JobExecutionContext;
 import org.quartz.JobExecutionException;
@@ -21,6 +22,7 @@ import java.util.stream.Collectors;
  */
 // Cron Expression: */5 * * * * ?
 @Slf4j
+@DisallowConcurrentExecution
 public class UmsDispatchJob implements Job {
 
 	 private final UmsDispatchService umsDispatchService;