diff --git a/src/org/redkale/source/DataSqlSource.java b/src/org/redkale/source/DataSqlSource.java
index e9ab2764b..2d35fd362 100644
--- a/src/org/redkale/source/DataSqlSource.java
+++ b/src/org/redkale/source/DataSqlSource.java
@@ -209,6 +209,8 @@ public abstract class DataSqlSource<DBChannel> extends AbstractService implement
     @Override
     public void destroy(AnyValue config) {
         if (this.executor != null) this.executor.shutdownNow();
+        if (readPool != null) readPool.close();
+        if (writePool != null) writePool.close();
     }
 
     @Local
diff --git a/src/org/redkale/source/PoolTcpSource.java b/src/org/redkale/source/PoolTcpSource.java
index 3d5be275d..e54a0c01c 100644
--- a/src/org/redkale/source/PoolTcpSource.java
+++ b/src/org/redkale/source/PoolTcpSource.java
@@ -38,6 +38,8 @@ public abstract class PoolTcpSource extends PoolSource<AsyncConnection> {
     //TCP Channel组
     protected AsynchronousChannelGroup group;
 
+    protected ScheduledThreadPoolExecutor scheduler;
+
     protected final ArrayBlockingQueue<AsyncConnection> connQueue;
 
     public PoolTcpSource(String rwtype, ArrayBlockingQueue queue, Semaphore semaphore, Properties prop, Logger logger, ObjectPool<ByteBuffer> bufferPool, ThreadPoolExecutor executor) {
@@ -50,6 +52,34 @@ public abstract class PoolTcpSource extends PoolSource<AsyncConnection> {
             throw new RuntimeException(e);
         }
         this.connQueue = queue == null ? new ArrayBlockingQueue<>(this.maxconns) : queue;
+        this.scheduler = new ScheduledThreadPoolExecutor(1, (Runnable r) -> {
+            final Thread t = new Thread(r, "PoolSource-Scheduled-Thread");
+            t.setDaemon(true);
+            return t;
+        });
+        this.scheduler.scheduleAtFixedRate(() -> {
+            runPingTask();
+        }, 60, 30, TimeUnit.SECONDS);
+    }
+
+    private void runPingTask() {
+        try {
+            if (connQueue.isEmpty()) return;
+            long time = System.currentTimeMillis() - 30 * 1000;
+            pollAsync().whenComplete((conn, e) -> {
+                if (e != null) return;
+                if (conn.getLastReadTime() >= time || conn.getLastWriteTime() >= time) return; //半分钟内已经用过
+                CompletableFuture<AsyncConnection> future = sendPingCommand(conn);
+                if (future == null) return; //不支持ping
+                future.whenComplete((conn2, e2) -> {
+                    if (e != null) return;
+                    offerConnection(conn2);
+                    runPingTask();
+                });
+            });
+        } catch (Exception e) {
+            logger.log(Level.FINEST, "PoolSource task ping failed", e);
+        }
     }
 
     @Override
@@ -216,6 +246,7 @@ public abstract class PoolTcpSource extends PoolSource<AsyncConnection> {
 
     @Override
     public void close() {
+        this.scheduler.shutdownNow();
         connQueue.stream().forEach(x -> {
             CompletableFuture<AsyncConnection> future = null;
             try {
@@ -232,5 +263,7 @@ public abstract class PoolTcpSource extends PoolSource<AsyncConnection> {
         });
     }
 
+    protected abstract CompletableFuture<AsyncConnection> sendPingCommand(final AsyncConnection conn);
+
     protected abstract CompletableFuture<AsyncConnection> sendCloseCommand(final AsyncConnection conn);
 }