diff --git a/source/common/src/tglobal.c b/source/common/src/tglobal.c
index e636dffdd91ec268b547209612d2ef079a59d722..e3f08e912ab3bf955f5e1905439a317c4464e214 100644
--- a/source/common/src/tglobal.c
+++ b/source/common/src/tglobal.c
@@ -393,7 +393,7 @@ static int32_t taosAddServerCfg(SConfig *pCfg) {
   if (cfgAddInt32(pCfg, "numOfRpcThreads", tsNumOfRpcThreads, 1, 1024, 0) != 0) return -1;
 
   tsNumOfRpcSessions = TRANGE(tsNumOfRpcSessions, 100, 10000);
-  if (cfgAddInt32(pCfg, "numOfRpcSessions", tsNumOfRpcSessions, 1, 1024, 0) != 0) return -1;
+  if (cfgAddInt32(pCfg, "numOfRpcSessions", tsNumOfRpcSessions, 1, 100000, 0) != 0) return -1;
 
   tsNumOfCommitThreads = tsNumOfCores / 2;
   tsNumOfCommitThreads = TRANGE(tsNumOfCommitThreads, 2, 4);
diff --git a/source/dnode/mgmt/node_mgmt/src/dmTransport.c b/source/dnode/mgmt/node_mgmt/src/dmTransport.c
index 3992dbc3e16187410918dc5909e4bb1388741ee6..3a1ca161a994ebd65a0471a13f49837eaeab48d4 100644
--- a/source/dnode/mgmt/node_mgmt/src/dmTransport.c
+++ b/source/dnode/mgmt/node_mgmt/src/dmTransport.c
@@ -291,7 +291,7 @@ int32_t dmInitClient(SDnode *pDnode) {
   rpcInit.connLimitNum = connLimitNum;
   rpcInit.connLimitLock = 1;
   rpcInit.supportBatch = 1;
-  rpcInit.batchSize = 16 * 1024;
+  rpcInit.batchSize = 8 * 1024;
 
   pTrans->clientRpc = rpcOpen(&rpcInit);
   if (pTrans->clientRpc == NULL) {