diff --git a/xxl-job-admin/src/main/resources/quartz.properties b/xxl-job-admin/src/main/resources/quartz.properties
index eaeca55..cc6ac0e 100644
--- a/xxl-job-admin/src/main/resources/quartz.properties
+++ b/xxl-job-admin/src/main/resources/quartz.properties
@@ -4,22 +4,23 @@
 #
 
 org.quartz.scheduler.instanceName: DefaultQuartzScheduler
+org.quartz.scheduler.instanceId: AUTO
 org.quartz.scheduler.rmi.export: false
 org.quartz.scheduler.rmi.proxy: false
 org.quartz.scheduler.wrapJobExecutionInUserTransaction: false
 
 org.quartz.threadPool.class: org.quartz.simpl.SimpleThreadPool
-org.quartz.threadPool.threadCount: 10
+org.quartz.threadPool.threadCount: 15
 org.quartz.threadPool.threadPriority: 5
 org.quartz.threadPool.threadsInheritContextClassLoaderOfInitializingThread: true
 
 org.quartz.jobStore.misfireThreshold: 60000
+org.quartz.jobStore.maxMisfiresToHandleAtATime: 1
 
 #org.quartz.jobStore.class: org.quartz.simpl.RAMJobStore
 
 # for cluster
 org.quartz.jobStore.tablePrefix = XXL_JOB_QRTZ_
-org.quartz.scheduler.instanceId: AUTO
 org.quartz.jobStore.class: org.quartz.impl.jdbcjobstore.JobStoreTX
 org.quartz.jobStore.isClustered: true
-org.quartz.jobStore.clusterCheckinInterval: 1000
+org.quartz.jobStore.clusterCheckinInterval: 5000

diff --git a/xxl-job-admin/src/main/resources/quartz.properties b/xxl-job-admin/src/main/resources/quartz.properties
index eaeca55..cc6ac0e 100644
--- a/xxl-job-admin/src/main/resources/quartz.properties
+++ b/xxl-job-admin/src/main/resources/quartz.properties
@@ -4,22 +4,23 @@
 #
 
 org.quartz.scheduler.instanceName: DefaultQuartzScheduler
+org.quartz.scheduler.instanceId: AUTO
 org.quartz.scheduler.rmi.export: false
 org.quartz.scheduler.rmi.proxy: false
 org.quartz.scheduler.wrapJobExecutionInUserTransaction: false
 
 org.quartz.threadPool.class: org.quartz.simpl.SimpleThreadPool
-org.quartz.threadPool.threadCount: 10
+org.quartz.threadPool.threadCount: 15
 org.quartz.threadPool.threadPriority: 5
 org.quartz.threadPool.threadsInheritContextClassLoaderOfInitializingThread: true
 
 org.quartz.jobStore.misfireThreshold: 60000
+org.quartz.jobStore.maxMisfiresToHandleAtATime: 1
 
 #org.quartz.jobStore.class: org.quartz.simpl.RAMJobStore
 
 # for cluster
 org.quartz.jobStore.tablePrefix = XXL_JOB_QRTZ_
-org.quartz.scheduler.instanceId: AUTO
 org.quartz.jobStore.class: org.quartz.impl.jdbcjobstore.JobStoreTX
 org.quartz.jobStore.isClustered: true
-org.quartz.jobStore.clusterCheckinInterval: 1000
+org.quartz.jobStore.clusterCheckinInterval: 5000
diff --git a/xxl-job-admin/src/main/resources/spring/applicationcontext-xxl-job-admin.xml b/xxl-job-admin/src/main/resources/spring/applicationcontext-xxl-job-admin.xml
index 8473296..83589dc 100644
--- a/xxl-job-admin/src/main/resources/spring/applicationcontext-xxl-job-admin.xml
+++ b/xxl-job-admin/src/main/resources/spring/applicationcontext-xxl-job-admin.xml
@@ -74,8 +74,9 @@
 
 	<bean id="quartzScheduler" lazy-init="false" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
 		<property name="dataSource" ref="dataSource" />
-		<property name="autoStartup" value="true" />	<!--自动启动 -->
-		<property name="startupDelay" value="20" />		<!--延时启动 -->
+		<property name="autoStartup" value="true" />			<!--自动启动 -->
+		<property name="startupDelay" value="20" />				<!--延时启动，应用启动成功后在启动 -->
+		<property name="overwriteExistingJobs" value="true" />	<!--覆盖DB中JOB：true、以数据库中已经存在的为准：false -->
 		<property name="applicationContextSchedulerContextKey"  value="applicationContextKey" />
 		<property name="configLocation" value="classpath:quartz.properties"/>
 	</bean>