diff --git a/src/rootserver/ddl_task/ob_column_redefinition_task.cpp b/src/rootserver/ddl_task/ob_column_redefinition_task.cpp
index bfbe3bba27..c1ea366ba5 100644
--- a/src/rootserver/ddl_task/ob_column_redefinition_task.cpp
+++ b/src/rootserver/ddl_task/ob_column_redefinition_task.cpp
@@ -250,7 +250,7 @@ int ObColumnRedefinitionTask::copy_table_indexes()
           LOG_INFO("indexes schema are already built", K(index_ids));
         } else {
           // if there is no indexes in new tables, we need to rebuild indexes in new table
-          if (OB_FAIL(root_service->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).
+          if (OB_FAIL(root_service->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).timeout(ObDDLUtil::get_ddl_rpc_timeout()).
                 execute_ddl_task(alter_table_arg_, index_ids))) {
             LOG_WARN("rebuild hidden table index failed", K(ret));
           }
@@ -358,7 +358,7 @@ int ObColumnRedefinitionTask::copy_table_constraints()
         alter_table_arg_.ddl_task_type_ = share::REBUILD_CONSTRAINT_TASK;
         alter_table_arg_.table_id_ = object_id_;
         alter_table_arg_.hidden_table_id_ = target_object_id_;
-        if (OB_FAIL(root_service->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).
+        if (OB_FAIL(root_service->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).timeout(ObDDLUtil::get_ddl_rpc_timeout()).
               execute_ddl_task(alter_table_arg_, constraint_ids))) {
           LOG_WARN("rebuild hidden table constraint failed", K(ret));
         }
@@ -402,7 +402,7 @@ int ObColumnRedefinitionTask::copy_table_foreign_keys()
         alter_table_arg_.ddl_task_type_ = share::REBUILD_FOREIGN_KEY_TASK;
         alter_table_arg_.table_id_ = object_id_;
         alter_table_arg_.hidden_table_id_ = target_object_id_;
-        if (OB_FAIL(root_service->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).
+        if (OB_FAIL(root_service->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).timeout(ObDDLUtil::get_ddl_rpc_timeout()).
               execute_ddl_task(alter_table_arg_, fk_ids))) {
           LOG_WARN("rebuild hidden table constraint failed", K(ret));
         }
@@ -536,7 +536,7 @@ int ObColumnRedefinitionTask::take_effect(const ObDDLTaskStatus next_task_status
     }
   } else if (OB_FAIL(sync_stats_info())) {
     LOG_WARN("fail to sync stats info", K(ret), K(object_id_), K(target_object_id_));
-  } else if (OB_FAIL(root_service->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).
+  } else if (OB_FAIL(root_service->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).timeout(ObDDLUtil::get_ddl_rpc_timeout()).
       execute_ddl_task(alter_table_arg_, objs))) {
     LOG_WARN("fail to swap original and hidden table state", K(ret));
     if (OB_TIMEOUT == ret) {
diff --git a/src/rootserver/ddl_task/ob_constraint_task.cpp b/src/rootserver/ddl_task/ob_constraint_task.cpp
index bf0813ab03..34ed9298ae 100644
--- a/src/rootserver/ddl_task/ob_constraint_task.cpp
+++ b/src/rootserver/ddl_task/ob_constraint_task.cpp
@@ -1076,14 +1076,15 @@ int ObConstraintTask::set_foreign_key_constraint_validated()
         ObSArray<uint64_t> unused_ids;
         alter_table_arg.ddl_task_type_ = share::MODIFY_FOREIGN_KEY_STATE_TASK;
         alter_table_arg.hidden_table_id_ = object_id_;
-        if (OB_FAIL(root_service->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).
+        if (OB_FAIL(root_service->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).timeout(ObDDLUtil::get_ddl_rpc_timeout()).
               execute_ddl_task(alter_table_arg, unused_ids))) {
           LOG_WARN("fail to alter table", K(ret), K(alter_table_arg), K(fk_arg));
         }
       } else {
         if (OB_FAIL(ObDDLUtil::refresh_alter_table_arg(tenant_id_, object_id_, alter_table_arg))) {
           LOG_WARN("failed to refresh name for alter table schema", K(ret));
-        } else if (OB_FAIL(root_service->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).alter_table(alter_table_arg, res))) {
+        } else if (OB_FAIL(root_service->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).timeout(ObDDLUtil::get_ddl_rpc_timeout()).
+            alter_table(alter_table_arg, res))) {
           LOG_WARN("alter table failed", K(ret));
         }
       }
@@ -1146,7 +1147,8 @@ int ObConstraintTask::set_check_constraint_validated()
             ObSArray<uint64_t> unused_ids;
             alter_table_arg.ddl_task_type_ = share::MODIFY_NOT_NULL_COLUMN_STATE_TASK;
             alter_table_arg.hidden_table_id_ = object_id_;
-            if (OB_FAIL(root_service_->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).execute_ddl_task(alter_table_arg, unused_ids))) {
+            if (OB_FAIL(root_service_->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).timeout(ObDDLUtil::get_ddl_rpc_timeout()).
+                execute_ddl_task(alter_table_arg, unused_ids))) {
               LOG_WARN("alter table failed", K(ret));
               if (OB_TABLE_NOT_EXIST == ret) {
                 ret = OB_NO_NEED_UPDATE;
@@ -1189,7 +1191,8 @@ int ObConstraintTask::set_check_constraint_validated()
             }
             DEBUG_SYNC(CONSTRAINT_BEFORE_SET_CHECK_CONSTRAINT_VALIDATED_BEFORE_ALTER_TABLE);
             if (OB_FAIL(ret)) {
-            } else if (OB_FAIL(root_service->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).alter_table(alter_table_arg, res))) {
+            } else if (OB_FAIL(root_service->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).timeout(ObDDLUtil::get_ddl_rpc_timeout()).
+                alter_table(alter_table_arg, res))) {
               LOG_WARN("alter table failed", K(ret));
             }
           }
@@ -1247,7 +1250,8 @@ int ObConstraintTask::set_new_not_null_column_validate()
         }
       }
       if (OB_FAIL(ret)) {
-      } else if (OB_FAIL(root_service->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).alter_table(alter_table_arg, res))) {
+      } else if (OB_FAIL(root_service->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).timeout(ObDDLUtil::get_ddl_rpc_timeout()).
+          alter_table(alter_table_arg, res))) {
         LOG_WARN("alter table failed", K(ret));
       } else {
         LOG_TRACE("set new not null column validate", K(alter_table_arg));
@@ -1339,7 +1343,8 @@ int ObConstraintTask::rollback_failed_check_constraint()
       alter_table_arg.is_alter_columns_ = false;
       alter_table_arg.index_arg_list_.reset();
       alter_table_arg.foreign_key_arg_list_.reset();
-      if (OB_FAIL(root_service_->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).alter_table(alter_table_arg, tmp_res))) {
+      if (OB_FAIL(root_service_->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).timeout(ObDDLUtil::get_ddl_rpc_timeout()).
+          alter_table(alter_table_arg, tmp_res))) {
         LOG_WARN("alter table failed", K(ret));
         if (OB_TABLE_NOT_EXIST == ret || OB_ERR_CANT_DROP_FIELD_OR_KEY == ret || OB_ERR_CONTRAINT_NOT_FOUND == ret) {
           ret = OB_NO_NEED_UPDATE;
@@ -1400,7 +1405,8 @@ int ObConstraintTask::rollback_failed_foregin_key()
         ObSArray<uint64_t> unused_ids;
         alter_table_arg.ddl_task_type_ = share::MODIFY_FOREIGN_KEY_STATE_TASK;
         alter_table_arg.hidden_table_id_ = object_id_;
-        if (OB_FAIL(root_service_->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).execute_ddl_task(alter_table_arg, unused_ids))) {
+        if (OB_FAIL(root_service_->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).timeout(ObDDLUtil::get_ddl_rpc_timeout()).
+            execute_ddl_task(alter_table_arg, unused_ids))) {
           LOG_WARN("alter table failed", K(ret));
           if (OB_TABLE_NOT_EXIST == ret || OB_ERR_CANT_DROP_FIELD_OR_KEY == ret) {
             ret = OB_NO_NEED_UPDATE;
@@ -1413,7 +1419,8 @@ int ObConstraintTask::rollback_failed_foregin_key()
           } else {
             LOG_WARN("failed to refresh name for alter table schema", K(ret));
           }
-        } else if (OB_FAIL(root_service_->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).alter_table(alter_table_arg, tmp_res))) {
+        } else if (OB_FAIL(root_service_->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).timeout(ObDDLUtil::get_ddl_rpc_timeout()).
+            alter_table(alter_table_arg, tmp_res))) {
           LOG_WARN("alter table failed", K(ret));
           if (OB_TABLE_NOT_EXIST == ret || OB_ERR_CANT_DROP_FIELD_OR_KEY == ret) {
             ret = OB_NO_NEED_UPDATE;
@@ -1495,7 +1502,7 @@ int ObConstraintTask::rollback_failed_add_not_null_columns()
         }
       }
       if (OB_SUCC(ret)
-          && OB_FAIL(root_service_->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).
+          && OB_FAIL(root_service_->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).timeout(ObDDLUtil::get_ddl_rpc_timeout()).
             execute_ddl_task(alter_table_arg, objs))) {
         LOG_WARN("alter table failed", K(ret));
         if (OB_TABLE_NOT_EXIST == ret || OB_ERR_CANT_DROP_FIELD_OR_KEY == ret) {
diff --git a/src/rootserver/ddl_task/ob_ddl_redefinition_task.cpp b/src/rootserver/ddl_task/ob_ddl_redefinition_task.cpp
index 171df9713a..cb1e54c1bc 100644
--- a/src/rootserver/ddl_task/ob_ddl_redefinition_task.cpp
+++ b/src/rootserver/ddl_task/ob_ddl_redefinition_task.cpp
@@ -1228,7 +1228,7 @@ int ObDDLRedefinitionTask::finish()
   } else if (OB_FAIL(schema_guard.get_table_schema(tenant_id_, object_id_, data_table_schema))) {
     LOG_WARN("get data table schema failed", K(ret), K(tenant_id_), K(object_id_));
   } else if (nullptr != data_table_schema && data_table_schema->get_association_table_id() != OB_INVALID_ID &&
-            OB_FAIL(root_service->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).
+            OB_FAIL(root_service->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).timeout(ObDDLUtil::get_ddl_rpc_timeout()).
                 execute_ddl_task(alter_table_arg_, objs))) {
     LOG_WARN("cleanup garbage failed", K(ret));
   } else if (OB_FAIL(cleanup())) {
@@ -2011,7 +2011,7 @@ template<typename P, typename A>
 int ObSyncTabletAutoincSeqCtx::call_and_process_all_tablet_autoinc_seqs(P &proxy, A &arg, const bool is_get)
 {
   int ret = OB_SUCCESS;
-  const int64_t rpc_timeout = max(GCONF.rpc_timeout, 1000L * 1000L * 9L);
+  const int64_t rpc_timeout = ObDDLUtil::get_ddl_rpc_timeout();
   const bool force_renew = false;
   share::ObLocationService *location_service = nullptr;
   ObHashMap<ObLSID, ObSEArray<ObMigrateTabletAutoincSeqParam, 1>> ls_to_tablet_map;
diff --git a/src/rootserver/ddl_task/ob_ddl_single_replica_executor.cpp b/src/rootserver/ddl_task/ob_ddl_single_replica_executor.cpp
index 40f18b978b..67f65e3c03 100644
--- a/src/rootserver/ddl_task/ob_ddl_single_replica_executor.cpp
+++ b/src/rootserver/ddl_task/ob_ddl_single_replica_executor.cpp
@@ -89,7 +89,7 @@ int ObDDLSingleReplicaExecutor::schedule_task()
     common::ObIArray<ObPartitionBuildInfo> &build_infos = partition_build_stat_;
     ObArray<int64_t> idxs;
     const int64_t current_time = ObTimeUtility::current_time();
-    const int64_t rpc_timeout = max(GCONF.rpc_timeout, 3 * 1000L * 1000L);
+    const int64_t rpc_timeout = ObDDLUtil::get_ddl_rpc_timeout();
     const bool force_renew = true;
     bool is_cache_hit = false;
     const int64_t expire_renew_time = force_renew ? INT64_MAX : 0;
diff --git a/src/rootserver/ddl_task/ob_ddl_task.cpp b/src/rootserver/ddl_task/ob_ddl_task.cpp
index c9153f07f1..91049e321b 100644
--- a/src/rootserver/ddl_task/ob_ddl_task.cpp
+++ b/src/rootserver/ddl_task/ob_ddl_task.cpp
@@ -784,7 +784,7 @@ int group_tablets_leader_addr(const uint64_t tenant_id, const ObIArray<ObTabletI
     ret = OB_INVALID_ARGUMENT;
     LOG_WARN("invalid argument", K(ret), K(tenant_id), K(tablet_ids.count()));
   } else {
-    const int64_t rpc_timeout = max(GCONF.rpc_timeout, 1000L * 1000L * 9L);
+    const int64_t rpc_timeout = ObDDLUtil::get_ddl_rpc_timeout();
     if (OB_FAIL(group_items.reserve(tablet_ids.count()))) {
       LOG_WARN("reserve send array failed", K(ret), K(tablet_ids.count()));
     }
@@ -830,7 +830,7 @@ int check_trans_end(const ObArray<SendItem> &send_array,
   } else {
     // group by leader addr and send batch rpc
     std::sort(tmp_send_array.begin(), tmp_send_array.end());
-    const int64_t rpc_timeout = max(GCONF.rpc_timeout, 1000L * 1000L * 9L);
+    const int64_t rpc_timeout = ObDDLUtil::get_ddl_rpc_timeout();
     ObAddr last_addr;
     for (int64_t i = 0; OB_SUCC(ret) && i < tmp_send_array.count(); ++i) {
       const SendItem &send_item = tmp_send_array.at(i);
@@ -1076,7 +1076,7 @@ int ObDDLWaitTransEndCtx::get_snapshot(int64_t &snapshot_version)
   ObRootService *root_service = nullptr;
   ObFreezeInfoProxy freeze_info_proxy(tenant_id_);
   ObSimpleFrozenStatus frozen_status;
-  const int64_t timeout = 10 * 1000 * 1000;//  10s
+  const int64_t timeout = ObDDLUtil::get_ddl_rpc_timeout();
   SCN curr_ts;
   bool is_external_consistent = false;
   if (OB_UNLIKELY(!is_inited_)) {
@@ -1370,7 +1370,7 @@ int send_batch_calc_rpc(obrpc::ObSrvRpcProxy &rpc_proxy,
                         int64_t &send_succ_count)
 {
   int ret = OB_SUCCESS;
-  const int64_t rpc_timeout = max(GCONF.rpc_timeout, 1000L * 1000L * 9L);
+  const int64_t rpc_timeout = ObDDLUtil::get_ddl_rpc_timeout();
   if (OB_FAIL(rpc_proxy.to(leader_addr)
                        .by(arg.tenant_id_)
                        .timeout(rpc_timeout)
@@ -1418,7 +1418,7 @@ int ObDDLWaitColumnChecksumCtx::send_calc_rpc(int64_t &send_succ_count)
     LOG_WARN("root service or location_cache is null", K(ret), KP(root_service), KP(location_service));
   } else {
     ObLSID ls_id;
-    const int64_t rpc_timeout = max(GCONF.rpc_timeout, 1000L * 1000L * 9L);
+    const int64_t rpc_timeout = ObDDLUtil::get_ddl_rpc_timeout();
     ObArray<SendItem> send_array;
     for (int64_t i = 0; OB_SUCC(ret) && i < stat_array_.count(); ++i) {
       PartitionColChecksumStat &item = stat_array_.at(i);
diff --git a/src/rootserver/ddl_task/ob_drop_index_task.cpp b/src/rootserver/ddl_task/ob_drop_index_task.cpp
index 002a9b1296..7b537c74e1 100644
--- a/src/rootserver/ddl_task/ob_drop_index_task.cpp
+++ b/src/rootserver/ddl_task/ob_drop_index_task.cpp
@@ -135,7 +135,7 @@ int ObDropIndexTask::update_index_status(const ObIndexStatus new_status)
     arg.in_offline_ddl_white_list_ = index_schema->get_table_state_flag() != TABLE_STATE_NORMAL;
 
     DEBUG_SYNC(BEFORE_UPDATE_GLOBAL_INDEX_STATUS);
-    if (OB_FAIL(root_service_->get_common_rpc_proxy().to(GCTX.self_addr()).update_index_status(arg))) {
+    if (OB_FAIL(root_service_->get_common_rpc_proxy().to(GCTX.self_addr()).timeout(ObDDLUtil::get_ddl_rpc_timeout()).update_index_status(arg))) {
       LOG_WARN("update index status failed", K(ret), K(arg));
     } else {
       LOG_INFO("notify index status changed finish", K(new_status), K(target_object_id_));
diff --git a/src/rootserver/ddl_task/ob_index_build_task.cpp b/src/rootserver/ddl_task/ob_index_build_task.cpp
index 7838d9935d..3e67dac473 100644
--- a/src/rootserver/ddl_task/ob_index_build_task.cpp
+++ b/src/rootserver/ddl_task/ob_index_build_task.cpp
@@ -1063,7 +1063,7 @@ int ObIndexBuildTask::update_index_status_in_schema(const ObTableSchema &index_s
     arg.in_offline_ddl_white_list_ = index_schema.get_table_state_flag() != TABLE_STATE_NORMAL;
 
     DEBUG_SYNC(BEFORE_UPDATE_GLOBAL_INDEX_STATUS);
-    if (OB_FAIL(root_service_->get_common_rpc_proxy().to(GCTX.self_addr()).update_index_status(arg))) {
+    if (OB_FAIL(root_service_->get_common_rpc_proxy().to(GCTX.self_addr()).timeout(ObDDLUtil::get_ddl_rpc_timeout()).update_index_status(arg))) {
       LOG_WARN("update index status failed", K(ret), K(arg));
     } else {
       LOG_INFO("notify index status changed finish", K(new_status), K(index_table_id_));
diff --git a/src/rootserver/ddl_task/ob_modify_autoinc_task.cpp b/src/rootserver/ddl_task/ob_modify_autoinc_task.cpp
index 3bedd4ffa5..fd5a75cc76 100644
--- a/src/rootserver/ddl_task/ob_modify_autoinc_task.cpp
+++ b/src/rootserver/ddl_task/ob_modify_autoinc_task.cpp
@@ -457,7 +457,8 @@ int ObModifyAutoincTask::set_schema_available()
   } else {
     ObSArray<uint64_t> unused_ids;
     alter_table_arg_.ddl_task_type_ = share::UPDATE_AUTOINC_SCHEMA;
-    if (OB_FAIL(root_service->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).execute_ddl_task(alter_table_arg_, unused_ids))) {
+    if (OB_FAIL(root_service->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).timeout(ObDDLUtil::get_ddl_rpc_timeout()).
+        execute_ddl_task(alter_table_arg_, unused_ids))) {
       LOG_WARN("alter table failed", K(ret));
     }
   }
diff --git a/src/rootserver/ddl_task/ob_table_redefinition_task.cpp b/src/rootserver/ddl_task/ob_table_redefinition_task.cpp
index 942bb200a1..483c68b980 100644
--- a/src/rootserver/ddl_task/ob_table_redefinition_task.cpp
+++ b/src/rootserver/ddl_task/ob_table_redefinition_task.cpp
@@ -331,7 +331,7 @@ int ObTableRedefinitionTask::copy_table_indexes()
           LOG_INFO("indexes schema are already built", K(index_ids));
         } else {
           // if there is no indexes in new tables, we need to rebuild indexes in new table
-          if (OB_FAIL(root_service->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).
+          if (OB_FAIL(root_service->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).timeout(ObDDLUtil::get_ddl_rpc_timeout()).
                 execute_ddl_task(alter_table_arg_, index_ids))) {
             LOG_WARN("rebuild hidden table index failed", K(ret));
           }
@@ -437,7 +437,7 @@ int ObTableRedefinitionTask::copy_table_constraints()
         alter_table_arg_.ddl_task_type_ = share::REBUILD_CONSTRAINT_TASK;
         alter_table_arg_.table_id_ = object_id_;
         alter_table_arg_.hidden_table_id_ = target_object_id_;
-        if (OB_FAIL(root_service->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).
+        if (OB_FAIL(root_service->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).timeout(ObDDLUtil::get_ddl_rpc_timeout()).
               execute_ddl_task(alter_table_arg_, constraint_ids))) {
           LOG_WARN("rebuild hidden table constraint failed", K(ret));
         }
@@ -506,7 +506,7 @@ int ObTableRedefinitionTask::copy_table_foreign_keys()
           alter_table_arg_.ddl_task_type_ = share::REBUILD_FOREIGN_KEY_TASK;
           alter_table_arg_.table_id_ = object_id_;
           alter_table_arg_.hidden_table_id_ = target_object_id_;
-          if (OB_FAIL(root_service->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).
+          if (OB_FAIL(root_service->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).timeout(ObDDLUtil::get_ddl_rpc_timeout()).
                 execute_ddl_task(alter_table_arg_, fk_ids))) {
             LOG_WARN("rebuild hidden table constraint failed", K(ret));
           }
@@ -657,7 +657,7 @@ int ObTableRedefinitionTask::take_effect(const ObDDLTaskStatus next_task_status)
     }
   } else if (OB_FAIL(sync_stats_info())) {
     LOG_WARN("fail to sync stats info", K(ret), K(object_id_), K(target_object_id_));
-  } else if (OB_FAIL(root_service->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).
+  } else if (OB_FAIL(root_service->get_ddl_service().get_common_rpc()->to(obrpc::ObRpcProxy::myaddr_).timeout(ObDDLUtil::get_ddl_rpc_timeout()).
       execute_ddl_task(alter_table_arg_, objs))) {
     LOG_WARN("fail to swap original and hidden table state", K(ret));
     if (OB_TIMEOUT == ret) {
diff --git a/src/share/ob_ddl_common.cpp b/src/share/ob_ddl_common.cpp
index a3e188bce8..be56dea3da 100644
--- a/src/share/ob_ddl_common.cpp
+++ b/src/share/ob_ddl_common.cpp
@@ -899,6 +899,11 @@ int ObDDLUtil::check_table_exist(
   return ret;
 }
 
+int64_t ObDDLUtil::get_ddl_rpc_timeout()
+{
+  return max(GCONF.rpc_timeout, 9 * 1000 * 1000L);
+}
+
 /******************           ObCheckTabletDataComplementOp         *************/
 
 int ObCheckTabletDataComplementOp::check_task_inner_sql_session_status(
diff --git a/src/share/ob_ddl_common.h b/src/share/ob_ddl_common.h
index fb2425d452..bd16294a82 100644
--- a/src/share/ob_ddl_common.h
+++ b/src/share/ob_ddl_common.h
@@ -305,6 +305,8 @@ public:
      const uint64_t table_id,
      share::schema::ObSchemaGetterGuard &schema_guard);
 
+  static int64_t get_ddl_rpc_timeout();
+
 private:
   static int generate_column_name_str(
     const common::ObIArray<ObColumnNameInfo> &column_names,