diff --git a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/utils/TaosInfo.java b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/utils/TaosInfo.java
index 69a90fe3b378067eda6de0efb2b655d41c49a1da..ee1364ce217c639cbf864f87f83ad6f5ddd6c137 100644
--- a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/utils/TaosInfo.java
+++ b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/utils/TaosInfo.java
@@ -2,7 +2,6 @@ package com.taosdata.jdbc.utils;
 
 import javax.management.*;
 import java.lang.management.ManagementFactory;
-import java.util.concurrent.atomic.AtomicInteger;
 import java.util.concurrent.atomic.AtomicLong;
 
 public class TaosInfo implements TaosInfoMBean {
@@ -17,6 +16,7 @@ public class TaosInfo implements TaosInfoMBean {
             MBeanServer server = ManagementFactory.getPlatformMBeanServer();
             ObjectName name = new ObjectName("TaosInfoMBean:name=TaosInfo");
             server.registerMBean(TaosInfo.getInstance(), name);
+
         } catch (MalformedObjectNameException | InstanceAlreadyExistsException | MBeanRegistrationException | NotCompliantMBeanException e) {
             e.printStackTrace();
         }
diff --git a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/cases/TaosInfoMonitorTest.java b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/cases/TaosInfoMonitorTest.java
index 2ab4045e276b3f0891763e63e0285195a45503cc..e9e36e20c4f83e98d6dd808da3a58ee628f418f0 100644
--- a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/cases/TaosInfoMonitorTest.java
+++ b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/cases/TaosInfoMonitorTest.java
@@ -17,7 +17,7 @@ public class TaosInfoMonitorTest {
 
         List<Connection> connectionList = IntStream.range(0, 100).mapToObj(i -> {
             try {
-                TimeUnit.SECONDS.sleep(1);
+                TimeUnit.MILLISECONDS.sleep(100);
                 return DriverManager.getConnection(url);
             } catch (SQLException | InterruptedException e) {
                 e.printStackTrace();
@@ -31,7 +31,7 @@ public class TaosInfoMonitorTest {
                 while (rs.next()) {
 
                 }
-                TimeUnit.MILLISECONDS.sleep(50);
+                TimeUnit.MILLISECONDS.sleep(100);
             } catch (SQLException | InterruptedException e) {
                 e.printStackTrace();
             }
@@ -40,7 +40,7 @@ public class TaosInfoMonitorTest {
         connectionList.stream().forEach(conn -> {
             try {
                 conn.close();
-                TimeUnit.SECONDS.sleep(1);
+                TimeUnit.MILLISECONDS.sleep(100);
             } catch (SQLException | InterruptedException e) {
                 e.printStackTrace();
             }