diff --git a/tests/examples/JDBC/connectionPools/pom.xml b/tests/examples/JDBC/connectionPools/pom.xml
index 46fd4adc38dac99e653688f99f54802b79b79031..fc489f7f1d2bfc9eaca4574ef00bd8c576eb222b 100644
--- a/tests/examples/JDBC/connectionPools/pom.xml
+++ b/tests/examples/JDBC/connectionPools/pom.xml
@@ -58,6 +58,12 @@
             <version>2.0.13</version>
         </dependency>
 
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-context</artifactId>
+            <version>5.2.8.RELEASE</version>
+        </dependency>
+
     </dependencies>
 
     <repositories>
diff --git a/tests/examples/JDBC/connectionPools/src/main/java/com/taosdata/demo/ConnectionPoolDemo.java b/tests/examples/JDBC/connectionPools/src/main/java/com/taosdata/demo/ConnectionPoolDemo.java
index 0957af19d6f8d8032503ec8800fc36bf06d5a3cd..4e29e2642392db2502062b6e0cd07e6e223a5bb7 100644
--- a/tests/examples/JDBC/connectionPools/src/main/java/com/taosdata/demo/ConnectionPoolDemo.java
+++ b/tests/examples/JDBC/connectionPools/src/main/java/com/taosdata/demo/ConnectionPoolDemo.java
@@ -6,6 +6,7 @@ import com.taosdata.demo.pool.DbcpBuilder;
 import com.taosdata.demo.pool.DruidPoolBuilder;
 import com.taosdata.demo.pool.HikariCpBuilder;
 import org.apache.log4j.Logger;
+import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
 
 import javax.sql.DataSource;
 import java.sql.Connection;
@@ -86,7 +87,13 @@ public class ConnectionPoolDemo {
         logger.info(">>>>>>>>>>>>>> connection pool Type: " + poolType);
         init(dataSource);
 
-        ThreadPoolExecutor executor = (ThreadPoolExecutor) Executors.newFixedThreadPool(threadPoolSize);
+
+        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
+        executor.setCorePoolSize(20);
+        executor.setMaxPoolSize(100);
+        executor.setQueueCapacity(100);
+        executor.setKeepAliveSeconds(300);
+//        ThreadPoolExecutor executor = (ThreadPoolExecutor) Executors.newFixedThreadPool(threadPoolSize);
         while (true) {
             executor.execute(new InsertTask(dataSource, dbName, tableSize, batchSize));
             logger.info("thread pool size : " + executor.getPoolSize() + ", active pool size: " + executor.getActiveCount());
diff --git a/tests/examples/JDBC/connectionPools/src/main/java/com/taosdata/demo/pool/HikariCpBuilder.java b/tests/examples/JDBC/connectionPools/src/main/java/com/taosdata/demo/pool/HikariCpBuilder.java
index 6ba43cd56364e705aab87309ccfd0dd448272961..daaad7b4640cbc599e9caf2af7c0de0ff314c9af 100644
--- a/tests/examples/JDBC/connectionPools/src/main/java/com/taosdata/demo/pool/HikariCpBuilder.java
+++ b/tests/examples/JDBC/connectionPools/src/main/java/com/taosdata/demo/pool/HikariCpBuilder.java
@@ -16,9 +16,6 @@ public class HikariCpBuilder {
 
         config.setMaximumPoolSize(poolSize);
         config.setMinimumIdle(poolSize);
-
-        config.setMinimumIdle(3);
-        config.setMaximumPoolSize(500);
         config.setMaxLifetime(2000000);
         config.setConnectionTimeout(30000);
         config.setIdleTimeout(30000);