diff --git a/src/client/src/tscSystem.c b/src/client/src/tscSystem.c
index 9a9217ef6809e99a5dcb8333f79d5ba73cdbff8c..f7422c05fa3eccca5a677e2f69beebf94f34beb4 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*2);   
+  pRpcObj = taosCachePut(tscRpcCache, rpcObj.key, strlen(rpcObj.key), &rpcObj, sizeof(rpcObj), 1000*5);   
   if (pRpcObj == NULL) {
     rpcClose(rpcObj.pDnodeConn);
     pthread_mutex_unlock(&rpcObjMutex);