diff --git a/src/rootserver/ob_ddl_service.cpp b/src/rootserver/ob_ddl_service.cpp
index 56369b04b7..fe2fd9a5fa 100755
--- a/src/rootserver/ob_ddl_service.cpp
+++ b/src/rootserver/ob_ddl_service.cpp
@@ -16693,6 +16693,8 @@ int ObDDLService::inner_drop_and_create_tablet_(const int64_t &schema_version,
   }
   if (OB_SUCC(ret)) {
     tenant_id = orig_table_schemas.at(0)->get_tenant_id();
+    LOG_INFO("start to drop_and_create_tablet", K(tenant_id), K(schema_version), K(orig_table_schemas.at(0)->get_table_id()));
+
     ObTabletDrop tablet_drop(tenant_id, trans, schema_version);
     // drop tablet
     if (FAILEDx(tablet_drop.init())) {
@@ -25421,7 +25423,7 @@ int ObDDLService::refresh_schema(uint64_t tenant_id, int64_t *publish_schema_ver
     while (!stopped_) {
       common::ObTimeoutCtx ctx;
       if (OB_FAIL(schema_service_->set_timeout_ctx(ctx))) {
-        LOG_ERROR("fail to set timeout_ctx, refresh schema failed", K(ret));
+        LOG_ERROR("fail to set timeout_ctx, refresh schema failed", KR(ret), K(tenant_id));
         break;
       } else {
         ret = schema_service_->refresh_and_add_schema(tenant_ids);
@@ -25439,8 +25441,8 @@ int ObDDLService::refresh_schema(uint64_t tenant_id, int64_t *publish_schema_ver
           break;
         }
         ++refresh_count;
-        LOG_WARN("refresh schema failed", KR(ret), K(refresh_count), "refresh_schema_interval",
-                 static_cast<int64_t>(REFRESH_SCHEMA_INTERVAL_US));
+        LOG_WARN("refresh schema failed", KR(ret), K(tenant_id), K(refresh_count),
+                                          "refresh_schema_interval", static_cast<int64_t>(REFRESH_SCHEMA_INTERVAL_US));
         if (refresh_count > 2 && REACH_TIME_INTERVAL(10 * 60 * 1000 * 1000L)) { // 10 min
           LOG_DBA_ERROR(OB_ERR_REFRESH_SCHEMA_TOO_LONG,
                         "msg", "refresh schema failed", KR(ret), K(refresh_count));
diff --git a/src/rootserver/ob_table_creator.cpp b/src/rootserver/ob_table_creator.cpp
index 6e35f23acf..b4190631df 100644
--- a/src/rootserver/ob_table_creator.cpp
+++ b/src/rootserver/ob_table_creator.cpp
@@ -316,14 +316,17 @@ int ObTableCreator::add_create_tablets_of_tables_arg_(
         }
       }
     }
-    if (OB_SUCC(ret)) {
+    if (OB_SUCC(ret) && !is_sys_table(table_schema.get_table_id())) {
+      int64_t start_time = ObTimeUtility::current_time();
       int64_t schema_version = table_schema.get_schema_version();
-      if (is_sys_table(table_schema.get_table_id())) {
-      } else if (OB_FAIL(share::ObTabletToTableHistoryOperator::create_tablet_to_table_history(
+      if (OB_FAIL(share::ObTabletToTableHistoryOperator::create_tablet_to_table_history(
                          trans_, tenant_id_, schema_version, pairs))) {
         LOG_WARN("fail to create tablet to table history",
                  KR(ret), K_(tenant_id), K(schema_version));
       }
+      int64_t end_time = ObTimeUtility::current_time();
+      LOG_INFO("finish create_tablet_to_table_history", KR(ret), K(table_schema.get_tenant_id()),
+                                                        K(table_schema.get_table_id()), "cost_ts", end_time - start_time);
     }
   }
   return ret;
@@ -356,7 +359,6 @@ int ObTableCreator::generate_create_tablet_arg_(
   } else {
     data_tablet_id = data_part->get_tablet_id();
   }
-
   for (int r = 0; r < schemas.count() && OB_SUCC(ret); r++) {
     const share::schema::ObTableSchema *table_schema_ptr = schemas.at(r);
     uint64_t table_id = OB_INVALID_ID;
@@ -409,4 +411,3 @@ int ObTableCreator::generate_create_tablet_arg_(
 
 } // rootserver
 } // oceanbase
-
diff --git a/src/rootserver/ob_tablet_creator.cpp b/src/rootserver/ob_tablet_creator.cpp
index cfee927042..70c6541ca3 100644
--- a/src/rootserver/ob_tablet_creator.cpp
+++ b/src/rootserver/ob_tablet_creator.cpp
@@ -335,7 +335,7 @@ int ObTabletCreator::execute()
             LOG_WARN("fail to set timeout ctx", KR(ret), K(default_timeout_ts));
           } else {
             do {
-              LOG_INFO("generate create arg", K(buf_len), K(batch_arg->arg_.tablets_.count()), K(batch_arg->arg_));
+              int64_t start_time = ObTimeUtility::current_time();
               if (ctx.is_timeouted()) {
                 ret = OB_TIMEOUT;
                 LOG_WARN("already timeout", KR(ret), K(ctx));
@@ -348,6 +348,9 @@ int ObTabletCreator::execute()
                   LOG_WARN("fail to register_tx_data", KR(ret), K(batch_arg->arg_), K(buf), K(buf_len));
                 }
               }
+              int64_t end_time = ObTimeUtility::current_time();
+              LOG_INFO("generate create arg", KR(ret), K(buf_len), K(batch_arg->arg_.tablets_.count()),
+                                              K(batch_arg->arg_), "cost_ts", end_time - start_time);
             } while (need_retry(ret));
           }
           batch_arg = batch_arg->next_;