diff --git a/src/share/system_variable/ob_system_variable_init.cpp b/src/share/system_variable/ob_system_variable_init.cpp
index 54d71872d1..1fe9db2447 100644
--- a/src/share/system_variable/ob_system_variable_init.cpp
+++ b/src/share/system_variable/ob_system_variable_init.cpp
@@ -2394,11 +2394,11 @@ static struct VarsInit{
     }();
 
     [&] (){
-      ObSysVars[168].default_value_ = "0" ;
+      ObSysVars[168].default_value_ = "1" ;
       ObSysVars[168].info_ = "enable batching of the RHS IO in NLJ" ;
       ObSysVars[168].name_ = "_nlj_batching_enabled" ;
       ObSysVars[168].data_type_ = ObIntType ;
-      ObSysVars[168].flags_ = ObSysVarFlag::GLOBAL_SCOPE | ObSysVarFlag::SESSION_SCOPE | ObSysVarFlag::NEED_SERIALIZE | ObSysVarFlag::INVISIBLE | ObSysVarFlag::INFLUENCE_PLAN ;
+      ObSysVars[168].flags_ = ObSysVarFlag::GLOBAL_SCOPE | ObSysVarFlag::SESSION_SCOPE | ObSysVarFlag::QUERY_SENSITIVE | ObSysVarFlag::NEED_SERIALIZE | ObSysVarFlag::INVISIBLE | ObSysVarFlag::INFLUENCE_PLAN ;
       ObSysVars[168].id_ = SYS_VAR__NLJ_BATCHING_ENABLED ;
       cur_max_var_id = MAX(cur_max_var_id, static_cast<int64_t>(SYS_VAR__NLJ_BATCHING_ENABLED)) ;
       ObSysVarsIdToArrayIdx[SYS_VAR__NLJ_BATCHING_ENABLED] = 168 ;
diff --git a/src/share/system_variable/ob_system_variable_init.json b/src/share/system_variable/ob_system_variable_init.json
index f43a23243f..4f73d6f463 100644
--- a/src/share/system_variable/ob_system_variable_init.json
+++ b/src/share/system_variable/ob_system_variable_init.json
@@ -2409,11 +2409,11 @@
   "_nlj_batching_enabled": {
     "id": 10080,
     "name": "_nlj_batching_enabled",
-    "default_value": "0",
+    "default_value": "1",
     "base_value": "1",
     "data_type": "bool",
     "info": "enable batching of the RHS IO in NLJ",
-    "flags": "GLOBAL | SESSION | NEED_SERIALIZE | INVISIBLE | INFLUENCE_PLAN",
+    "flags": "GLOBAL | SESSION | QUERY_SENSITIVE| NEED_SERIALIZE | INVISIBLE | INFLUENCE_PLAN",
     "publish_version": "",
     "info_cn": "",
     "background_cn": "",