diff --git a/src/sql/ob_result_set.cpp b/src/sql/ob_result_set.cpp
index 465ee4106..480f44d95 100644
--- a/src/sql/ob_result_set.cpp
+++ b/src/sql/ob_result_set.cpp
@@ -974,7 +974,26 @@ OB_INLINE int ObResultSet::auto_end_plan_trans(ObPhysicalPlan& plan,
             K(in_trans), K(ac), K(explicit_trans),
             K(is_async_end_trans_submitted()));
   // explicit start trans will disable auto-commit
-  if (!explicit_trans && ac && plan.is_need_trans()) {
+  if (!explicit_trans && ac) {
+    // Query like `select 1` will keep next scope set transaction xxx valid
+    // for example:
+    // set session transaction read only;
+    // set @@session.autocommit=1;
+    // set transaction read write;
+    // select 1;
+    // insert into t values(1); -- this will be success
+    //
+    // so, can not reset these transaction variables
+    //
+    // must always commit/rollback the transactional state in `ObTxDesc`
+    // for example:
+    // set session transaction isolation level SERIALIZABLE
+    // -- UDF with: select count(1) from t1;
+    // select UDF1() from dual; -- PL will remain transctional state after run UDF1
+    //
+    // after execute UDF1, snapshot is kept in ObTxDesc, must cleanup before run
+    // other Query
+    bool reset_tx_variable = plan.is_need_trans();
     ObPhysicalPlanCtx *plan_ctx = NULL;
     if (OB_ISNULL(plan_ctx = get_exec_context().get_physical_plan_ctx())) {
       ret = OB_ERR_UNEXPECTED;
@@ -988,7 +1007,9 @@ OB_INLINE int ObResultSet::auto_end_plan_trans(ObPhysicalPlan& plan,
         // 因为InnerSQL没有走Obmp_query接口，而是直接操作ResultSet
         int save_ret = ret;
         if (OB_FAIL(ObSqlTransControl::implicit_end_trans(get_exec_context(),
-                                                          is_rollback))) {
+                                                          is_rollback,
+                                                          NULL,
+                                                          reset_tx_variable))) {
           if (OB_REPLICA_NOT_READABLE != ret) {
               LOG_WARN("sync end trans callback return an error!", K(ret),
                        K(is_rollback), KPC(my_session_.get_tx_desc()));
@@ -1019,7 +1040,8 @@ OB_INLINE int ObResultSet::auto_end_plan_trans(ObPhysicalPlan& plan,
         my_session_.get_end_trans_cb().set_last_error(ret);
         ret = ObSqlTransControl::implicit_end_trans(get_exec_context(),
                                                     is_rollback,
-                                                    &my_session_.get_end_trans_cb());
+                                                    &my_session_.get_end_trans_cb(),
+                                                    reset_tx_variable);
         // NOTE: async callback client will not issued if:
         // 1) it is a rollback, which will succeed immediately
         // 2) the commit submit/starting failed, in this case