diff --git a/src/client/src/tscSystem.c b/src/client/src/tscSystem.c
index 7a685c9f567548405dba3e42f73879b5f32706fe..9a9217ef6809e99a5dcb8333f79d5ba73cdbff8c 100644
--- a/src/client/src/tscSystem.c
+++ b/src/client/src/tscSystem.c
@@ -101,7 +101,7 @@ int32_t tscAcquireRpc(const char *key, const char *user, const char *secretEncry
     tscError("failed to init connection to TDengine");
     return -1;
   } 
-  pRpcObj = taosCachePut(tscRpcCache, rpcObj.key, strlen(rpcObj.key), &rpcObj, sizeof(rpcObj), 1000*10);   
+  pRpcObj = taosCachePut(tscRpcCache, rpcObj.key, strlen(rpcObj.key), &rpcObj, sizeof(rpcObj), 1000*2);   
   if (pRpcObj == NULL) {
     rpcClose(rpcObj.pDnodeConn);
     pthread_mutex_unlock(&rpcObjMutex);