diff --git a/source/dnode/mgmt/node_mgmt/src/dmTransport.c b/source/dnode/mgmt/node_mgmt/src/dmTransport.c
index 1ddab769d83fa586a47d2843c6f7a45ee8a21946..f35352268f864f3c1a2c138b954e5e6513e9d9cc 100644
--- a/source/dnode/mgmt/node_mgmt/src/dmTransport.c
+++ b/source/dnode/mgmt/node_mgmt/src/dmTransport.c
@@ -284,9 +284,9 @@ int32_t dmInitClient(SDnode *pDnode) {
   rpcInit.failFastThreshold = 3;    // failed threshold
   rpcInit.ffp = dmFailFastFp;
 
-  int32_t connLimitNum = 30000 / (tsNumOfRpcThreads * 3);
-  connLimitNum = TMAX(connLimitNum, 500);
-  connLimitNum = TMIN(connLimitNum, 1000);
+  int32_t connLimitNum = 10000 / (tsNumOfRpcThreads * 3);
+  connLimitNum = TMAX(connLimitNum, 100);
+  connLimitNum = TMIN(connLimitNum, 600);
 
   rpcInit.connLimitNum = connLimitNum;
   rpcInit.connLimitLock = 1;
diff --git a/source/libs/transport/src/transCli.c b/source/libs/transport/src/transCli.c
index 473467d753df523fee458460cd95c77134f8b0ab..e4fa91170d9e02ebaa62c7549458b18c07a85b62 100644
--- a/source/libs/transport/src/transCli.c
+++ b/source/libs/transport/src/transCli.c
@@ -1070,22 +1070,24 @@ static void cliHandleBatchReq(SCliBatch* pBatch, SCliThrd* pThrd) {
   cliSendBatch(conn);
 }
 static void cliSendBatchCb(uv_write_t* req, int status) {
-  SCliConn* conn = req->data;
-  taosMemoryFree(req);
+  SCliConn*  conn = req->data;
+  SCliThrd*  thrd = conn->hostThrd;
+  SCliBatch* p = conn->pBatch;
 
-  SCliThrd* thrd = conn->hostThrd;
-  cliDestroyBatch(conn->pBatch);
   conn->pBatch = NULL;
 
   if (status != 0) {
     tDebug("%p conn %p failed to send batch msg, batch size:%d, msgLen:%d, reason:%s", CONN_GET_INST_LABEL(conn), conn,
-           conn->pBatch->wLen, conn->pBatch->batchSize, uv_err_name(status));
+           p->wLen, p->batchSize, uv_err_name(status));
     cliHandleExcept(conn);
   } else {
-    tDebug("%p conn %p succ to send batch msg, batch size:%d, msgLen:%d", CONN_GET_INST_LABEL(conn), conn,
-           conn->pBatch->wLen, conn->pBatch->batchSize);
+    tDebug("%p conn %p succ to send batch msg, batch size:%d, msgLen:%d", CONN_GET_INST_LABEL(conn), conn, p->wLen,
+           p->batchSize);
     addConnToPool(thrd->pool, conn);
   }
+
+  cliDestroyBatch(p);
+  taosMemoryFree(req);
 }
 static void cliHandleFastFail(SCliConn* pConn, int status) {
   SCliThrd* pThrd = pConn->hostThrd;