diff --git a/src/sql/ob_sql.cpp b/src/sql/ob_sql.cpp
index 24a418e4fb..6964cae9e4 100644
--- a/src/sql/ob_sql.cpp
+++ b/src/sql/ob_sql.cpp
@@ -4464,18 +4464,24 @@ int ObSql::after_get_plan(ObPlanCacheCtx &pc_ctx,
       }
     }
     if (OB_SUCC(ret) && NULL != phy_plan && !session.get_is_deserialized() && !session.is_inner()) {
-      if (phy_plan->is_contain_oracle_session_level_temporary_table()
-          || phy_plan->is_contain_oracle_trx_level_temporary_table()
-          || phy_plan->contains_temp_table()) {
-        bool is_already_set = false;
-        if (OB_FAIL(session.get_session_temp_table_used(is_already_set))) {
-          LOG_WARN("fail to get session temp table used", K(ret));
-        } else if (is_already_set) {
-          //do nothing
-        } else if (OB_FAIL(session.set_session_temp_table_used(true))) {
-          LOG_WARN("fail to set session temp table used", K(ret));
+      bool has_session_tmp_table = phy_plan->is_contain_oracle_session_level_temporary_table()
+        || phy_plan->contains_temp_table();
+      bool has_txn_tmp_table = phy_plan->is_contain_oracle_trx_level_temporary_table();
+      if (has_session_tmp_table || has_txn_tmp_table) {
+        if (session.is_txn_free_route_temp()) {
+          ret = OB_TRANS_FREE_ROUTE_NOT_SUPPORTED;
+          LOG_WARN("access temp table is supported to be executed on txn temporary node", KR(ret), K(session.get_txn_free_route_ctx()));
+        } else {
+          bool is_already_set = false;
+          if (OB_FAIL(session.get_session_temp_table_used(is_already_set))) {
+            LOG_WARN("fail to get session temp table used", K(ret));
+          } else if (is_already_set) {
+            //do nothing
+          } else if (OB_FAIL(session.set_session_temp_table_used(true))) {
+            LOG_WARN("fail to set session temp table used", K(ret));
+          }
+          LOG_DEBUG("plan contain oracle session level temporary table detected", K(is_already_set));
         }
-        LOG_DEBUG("plan contain oracle session level temporary table detected", K(is_already_set));
       }
       if (OB_SUCC(ret)) {
         if (OB_FAIL(append_array_no_dup(session.get_gtt_session_scope_ids(),
diff --git a/src/sql/resolver/dml/ob_dml_resolver.cpp b/src/sql/resolver/dml/ob_dml_resolver.cpp
index 4c84b04459..e652d97c77 100755
--- a/src/sql/resolver/dml/ob_dml_resolver.cpp
+++ b/src/sql/resolver/dml/ob_dml_resolver.cpp
@@ -3615,13 +3615,7 @@ int ObDMLResolver::resolve_table_drop_oracle_temp_table(TableItem *&table_item)
       ret = OB_TABLE_NOT_EXIST;
       LOG_WARN("get table schema failed", K_(table_item->table_name), K(ret));
     } else if (OB_NOT_NULL(table_schema) && table_schema->is_oracle_tmp_table()) {
-      if (OB_FAIL(session_info_->drop_reused_oracle_temp_tables())) {
-        LOG_WARN("fail to drop reused oracle temporary tables", K(ret));
-      } else {
-        session_info_->set_has_temp_table_flag();
-        LOG_DEBUG("succeed to drop oracle temporary table in case of session id reused",
-                  K(session_info_->get_sessid_for_table()));
-      }
+      session_info_->set_has_temp_table_flag();
     }
   }
   return ret;
diff --git a/src/sql/resolver/expr/ob_raw_expr.cpp b/src/sql/resolver/expr/ob_raw_expr.cpp
index 172eff5844..0b0619a817 100644
--- a/src/sql/resolver/expr/ob_raw_expr.cpp
+++ b/src/sql/resolver/expr/ob_raw_expr.cpp
@@ -749,7 +749,6 @@ int ObRawExpr::is_const_inherit_expr(bool &is_const_inherit,
       || (T_FUN_SYS_LAST_INSERT_ID == type_ && get_param_count() > 0)
       || T_FUN_SYS_TO_BLOB == type_
       || (T_FUN_SYS_SYSDATE == type_ && lib::is_mysql_mode())
-      || T_FUN_GET_TEMP_TABLE_SESSID == type_
       || (param_need_replace ? is_not_calculable_expr() : cnt_not_calculable_expr())
       || (T_FUN_UDF == type_
           && !static_cast<const ObUDFRawExpr*>(this)->is_deterministic())) {
@@ -793,6 +792,7 @@ int ObRawExpr::is_non_pure_sys_func_expr(bool &is_non_pure) const
           || T_FUN_SYS_CUR_DATE == type_
           || T_FUN_SYS_USERENV == type_
           || T_FUN_SYS_REGEXP_REPLACE == type_
+          || T_FUN_GET_TEMP_TABLE_SESSID == type_
           || T_FUN_SYS_USER_CAN_ACCESS_OBJ == type_) {
       is_non_pure = true;
     } else if (T_FUN_SYS_TO_DATE == type_ || T_FUN_SYS_TO_TIMESTAMP == type_ ||
diff --git a/src/sql/session/ob_sql_session_info.cpp b/src/sql/session/ob_sql_session_info.cpp
index ae6d9f1733..3af77e4b06 100644
--- a/src/sql/session/ob_sql_session_info.cpp
+++ b/src/sql/session/ob_sql_session_info.cpp
@@ -681,6 +681,11 @@ int ObSQLSessionInfo::delete_from_oracle_temp_tables(const obrpc::ObDropTableArg
     if (TMP_TABLE_ORA_TRX == table_type && !get_is_deserialized()) {
       gtt_trans_scope_ids_.reuse();
       gen_gtt_trans_scope_unique_id();
+      if (gtt_session_scope_ids_.count() == 0) {
+        if (OB_FAIL(set_session_temp_table_used(false))) {
+          LOG_WARN("fail to set session temp table unused", K(ret));
+        }
+      }
     }
   }
   return ret;