diff --git a/src/common/src/tglobal.c b/src/common/src/tglobal.c
index 79ea2b2d46be17c41d1dcc06796499ef3d69fc4b..1a510299c1b73af8189775fdc7e5d9af442e7411 100644
--- a/src/common/src/tglobal.c
+++ b/src/common/src/tglobal.c
@@ -297,7 +297,7 @@ static void doInitGlobalConfig() {
   SGlobalCfg cfg = {0};
   
   // ip address
-  cfg.option = "first";
+  cfg.option = "firstEp";
   cfg.ptr = tsFirst;
   cfg.valType = TAOS_CFG_VTYPE_STRING;
   cfg.cfgType = TSDB_CFG_CTYPE_B_CONFIG | TSDB_CFG_CTYPE_B_CLIENT;
@@ -307,7 +307,7 @@ static void doInitGlobalConfig() {
   cfg.unitType = TAOS_CFG_UTYPE_NONE;
   taosInitConfigOption(cfg);
 
-  cfg.option = "second";
+  cfg.option = "secondEp";
   cfg.ptr = tsSecond;
   cfg.valType = TAOS_CFG_VTYPE_STRING;
   cfg.cfgType = TSDB_CFG_CTYPE_B_CONFIG | TSDB_CFG_CTYPE_B_CLIENT;
diff --git a/src/kit/shell/src/shellEngine.c b/src/kit/shell/src/shellEngine.c
index 01dcc73ef65e4d75ea9f3d7e7a83ab0ee8892950..616a3bfd7f26b55bb2b71aa9bb3f7720bd69e43c 100644
--- a/src/kit/shell/src/shellEngine.c
+++ b/src/kit/shell/src/shellEngine.c
@@ -73,6 +73,8 @@ TAOS *shellInit(SShellArguments *args) {
   // Connect to the database.
   TAOS *con = taos_connect(args->host, args->user, args->password, args->database, args->port);
   if (con == NULL) {
+    printf("taos connect failed, reason: %s.\n\n", tstrerror(terrno));
+    fflush(stdout);
     return con;
   }