diff --git a/src/sql/optimizer/ob_log_set.cpp b/src/sql/optimizer/ob_log_set.cpp
index 6dc55cff0f..152cd5ec07 100644
--- a/src/sql/optimizer/ob_log_set.cpp
+++ b/src/sql/optimizer/ob_log_set.cpp
@@ -850,10 +850,7 @@ int ObLogSet::construct_pq_set_hint(ObPQSetHint &hint)
 int ObLogSet::compute_op_parallel_and_server_info()
 {
   int ret = OB_SUCCESS;
-  bool is_partition_wise = DistAlgo::DIST_PARTITION_WISE == get_distributed_algo()
-                           || DistAlgo::DIST_EXT_PARTITION_WISE == get_distributed_algo()
-                           || DistAlgo::DIST_SET_PARTITION_WISE == get_distributed_algo();
-  if (OB_FAIL(compute_normal_multi_child_parallel_and_server_info(is_partition_wise))) {
+  if (OB_FAIL(compute_normal_multi_child_parallel_and_server_info())) {
     LOG_WARN("failed to compute multi child parallel and server info", K(ret), K(get_distributed_algo()));
   }
   return ret;
diff --git a/src/sql/optimizer/ob_log_subplan_filter.cpp b/src/sql/optimizer/ob_log_subplan_filter.cpp
index 7b08000b0f..90988433a5 100644
--- a/src/sql/optimizer/ob_log_subplan_filter.cpp
+++ b/src/sql/optimizer/ob_log_subplan_filter.cpp
@@ -838,8 +838,7 @@ int ObLogSubPlanFilter::rebuild_repart_sharding_info(const ObShardingInfo *input
 int ObLogSubPlanFilter::compute_op_parallel_and_server_info()
 {
   int ret = OB_SUCCESS;
-  bool is_partition_wise = DistAlgo::DIST_PARTITION_WISE == get_distributed_algo();
-  if (OB_FAIL(compute_normal_multi_child_parallel_and_server_info(is_partition_wise))) {
+  if (OB_FAIL(compute_normal_multi_child_parallel_and_server_info())) {
     LOG_WARN("failed to compute multi child parallel and server info", K(ret), K(get_distributed_algo()));
   }
   return ret;
diff --git a/src/sql/optimizer/ob_logical_operator.cpp b/src/sql/optimizer/ob_logical_operator.cpp
index 3e9101074d..68bc3d67a8 100644
--- a/src/sql/optimizer/ob_logical_operator.cpp
+++ b/src/sql/optimizer/ob_logical_operator.cpp
@@ -709,30 +709,31 @@ int ObLogicalOperator::compute_op_parallel_and_server_info()
 }
 
 
-int ObLogicalOperator::compute_normal_multi_child_parallel_and_server_info(bool is_partition_wise)
+int ObLogicalOperator::compute_normal_multi_child_parallel_and_server_info()
 {
   int ret = OB_SUCCESS;
   const ObLogicalOperator *max_parallel_child = NULL;
-  bool parallel_is_different = false;
-  int64_t op_parallel = ObGlobalHint::UNSET_PARALLEL;
+  bool max_parallel_from_exch = false;
   int64_t max_available_parallel = ObGlobalHint::DEFAULT_PARALLEL;
   const ObLogicalOperator *child = NULL;
   for (int64_t i = 0; OB_SUCC(ret) && i < get_num_of_child(); ++i) {
     if (OB_ISNULL(child = get_child(i))) {
       ret = OB_ERR_UNEXPECTED;
       LOG_WARN("set operator i-th child is null", K(ret), K(i));
-    } else if (child->is_match_all()) {
-      max_parallel_child = (NULL == max_parallel_child && (get_num_of_child() - 1) == i)
-                           ? child : max_parallel_child;
-    } else if (ObGlobalHint::UNSET_PARALLEL == op_parallel) {
-      op_parallel = child->get_parallel();
+    } else if (0 == i) {
       max_parallel_child = child;
-      max_available_parallel = child->get_available_parallel();
+      max_available_parallel = max_parallel_child->get_available_parallel();
+      max_parallel_from_exch = LOG_EXCHANGE == max_parallel_child->get_type();
+    } else if (!max_parallel_from_exch &&
+               LOG_EXCHANGE == child->get_type()) {
+      //do nothing
     } else {
-      parallel_is_different |= child->get_parallel() != op_parallel;
-      max_available_parallel = std::max(max_available_parallel, child->get_available_parallel());
-      max_parallel_child = max_parallel_child->get_parallel() < child->get_parallel()
-                           ? child : max_parallel_child;
+      if (max_parallel_child->get_parallel() < child->get_parallel() ||
+          (max_parallel_from_exch && LOG_EXCHANGE != child->get_type())) {
+        max_available_parallel = child->get_available_parallel();
+        max_parallel_child = child;
+        max_parallel_from_exch = LOG_EXCHANGE == max_parallel_child->get_type();
+      }
     }
   }
 
@@ -740,9 +741,6 @@ int ObLogicalOperator::compute_normal_multi_child_parallel_and_server_info(bool
   } else if (OB_ISNULL(max_parallel_child)) {
     ret = OB_ERR_UNEXPECTED;
     LOG_WARN("unexpected null ", K(ret), K(max_parallel_child));
-  } else if (OB_UNLIKELY(parallel_is_different && !is_partition_wise)) {
-    ret = OB_ERR_UNEXPECTED;
-    LOG_WARN("child op has different parallel except partition wise", K(ret));
   } else if (OB_FAIL(get_server_list().assign(max_parallel_child->get_server_list()))) {
     LOG_WARN("failed to assign server list", K(ret));
   } else {
diff --git a/src/sql/optimizer/ob_logical_operator.h b/src/sql/optimizer/ob_logical_operator.h
index 82d687dbe9..e6c6be35b4 100644
--- a/src/sql/optimizer/ob_logical_operator.h
+++ b/src/sql/optimizer/ob_logical_operator.h
@@ -1324,7 +1324,7 @@ public:
   virtual int compute_property();
 
   int check_property_valid() const;
-  int compute_normal_multi_child_parallel_and_server_info(bool is_partition_wise);
+  int compute_normal_multi_child_parallel_and_server_info();
   int set_parallel_and_server_info_for_match_all();
   int get_limit_offset_value(ObRawExpr *percent_expr,
                              ObRawExpr *limit_expr,
diff --git a/src/sql/optimizer/ob_select_log_plan.cpp b/src/sql/optimizer/ob_select_log_plan.cpp
index b2015674b3..49028d4766 100644
--- a/src/sql/optimizer/ob_select_log_plan.cpp
+++ b/src/sql/optimizer/ob_select_log_plan.cpp
@@ -2410,14 +2410,14 @@ int ObSelectLogPlan::check_sharding_inherit_from_access_all(ObLogicalOperator* o
       is_inherit_from_access_all = true;
     }
   }
-  if (OB_SUCC(ret) &&
-      !is_inherit_from_access_all &&
-      op->get_inherit_sharding_index() != -1) {
-    int64_t idx = op->get_inherit_sharding_index();
-    if (idx < 0 || idx >= op->get_num_of_child()) {
+  for (int64_t i = 0; OB_SUCC(ret) && !is_inherit_from_access_all && i < op->get_num_of_child(); ++i) {
+    ObLogicalOperator *child = op->get_child(i);
+    if (OB_ISNULL(child)) {
       ret = OB_ERR_UNEXPECTED;
-      LOG_WARN("unexpect inherit sharding index", K(ret));
-    } else if (OB_FAIL(SMART_CALL(check_sharding_inherit_from_access_all(op->get_child(idx),
+      LOG_WARN("unexpect null child", K(ret), K(i));
+    } else if (LOG_EXCHANGE == child->get_type()) {
+      //do nothing
+    } else if (OB_FAIL(SMART_CALL(check_sharding_inherit_from_access_all(child,
                                                                          is_inherit_from_access_all)))) {
       LOG_WARN("failed to check sharding inherit from bc2host", K(ret));
     }
diff --git a/src/sql/optimizer/ob_sharding_info.cpp b/src/sql/optimizer/ob_sharding_info.cpp
index 37e6762b5e..59fee30812 100644
--- a/src/sql/optimizer/ob_sharding_info.cpp
+++ b/src/sql/optimizer/ob_sharding_info.cpp
@@ -1056,9 +1056,9 @@ int ObShardingInfo::is_sharding_equal(const ObShardingInfo *left_sharding,
     is_equal = false;
   } else if (left_sharding->get_location_type() != right_sharding->get_location_type()) {
     is_equal = false;
-  } else if (left_sharding->is_match_all() || left_sharding->is_local()) {
-    is_equal = true;
-  } else if (left_sharding->is_remote()) {
+  } else if (left_sharding->get_can_reselect_replica() != right_sharding->get_can_reselect_replica()) {
+    is_equal = false;
+  } else if (left_sharding->is_remote() || left_sharding->get_can_reselect_replica()) {
     ObSEArray<common::ObAddr, 2> left_servers;
     ObSEArray<common::ObAddr, 2> right_servers;
     if (OB_FAIL(get_serverlist_from_sharding(*left_sharding, left_servers))) {
@@ -1070,6 +1070,8 @@ int ObShardingInfo::is_sharding_equal(const ObShardingInfo *left_sharding,
                                                       is_equal))) {
       LOG_WARN("failed to check equal server list", K(ret));
     } else { /*do nothing*/ }
+  } else if (left_sharding->is_match_all() || left_sharding->is_local()) {
+    is_equal = true;
   } else if (!ObOptimizerUtil::same_exprs(left_sharding->get_partition_keys(),
                                           right_sharding->get_partition_keys(),
                                           equal_sets) ||