diff --git a/src/observer/omt/ob_tenant_config_mgr.cpp b/src/observer/omt/ob_tenant_config_mgr.cpp
index 43c778d347..dfa757211e 100644
--- a/src/observer/omt/ob_tenant_config_mgr.cpp
+++ b/src/observer/omt/ob_tenant_config_mgr.cpp
@@ -90,7 +90,7 @@ int64_t TenantConfigInfo::to_string(char *buf, const int64_t buf_len) const
 }
 
 ObTenantConfigMgr::ObTenantConfigMgr()
-    : inited_(false), self_(), sql_proxy_(nullptr), rwlock_(ObLatchIds::CONFIG_LOCK),
+    : rwlock_(ObLatchIds::CONFIG_LOCK), inited_(false), self_(), sql_proxy_(nullptr),
       config_map_(), config_version_map_(), sys_config_mgr_(nullptr),
       version_has_refreshed_(false), update_tenant_config_cb_()
 {
diff --git a/src/observer/omt/ob_tenant_config_mgr.h b/src/observer/omt/ob_tenant_config_mgr.h
index 31de609216..8ea0309ee3 100644
--- a/src/observer/omt/ob_tenant_config_mgr.h
+++ b/src/observer/omt/ob_tenant_config_mgr.h
@@ -162,7 +162,8 @@ public:
     }
     return id;
   }
-
+  // protect config_map_
+  mutable common::DRWLock rwlock_;
   OB_UNIS_VERSION(1);
 
 private:
@@ -171,8 +172,6 @@ private:
   bool inited_;
   common::ObAddr self_;
   common::ObMySQLProxy *sql_proxy_;
-  // protect config_map_
-  mutable common::DRWLock rwlock_;
   // 租户配置项的映射
   TenantConfigMap config_map_;
   TenantConfigVersionMap config_version_map_;
diff --git a/src/share/config/ob_config_manager.cpp b/src/share/config/ob_config_manager.cpp
index e18b2e94b5..b07de8f9fa 100644
--- a/src/share/config/ob_config_manager.cpp
+++ b/src/share/config/ob_config_manager.cpp
@@ -345,13 +345,16 @@ int ObConfigManager::update_local(int64_t expected_version)
       LOG_ERROR("Read server config failed", K(ret));
     } else if (OB_FAIL(reload_config())) {
       LOG_WARN("Reload configuration failed", K(ret));
-    } else if (OB_FAIL(dump2file())) {
-      LOG_WARN("Dump to file failed", K_(dump_path), K(ret));
     } else {
-      GCONF.cluster.set_dumped_version(GCONF.cluster.version());
-      LOG_INFO("Reload server config successfully!");
-      ret = config_backup();
-   }
+      DRWLock::RDLockGuard guard(OTC_MGR.rwlock_); // need protect tenant config because it will also serialize tenant config
+      if (OB_FAIL(dump2file())) {
+        LOG_WARN("Dump to file failed", K_(dump_path), K(ret));
+      } else {
+        GCONF.cluster.set_dumped_version(GCONF.cluster.version());
+        LOG_INFO("Reload server config successfully!");
+        ret = config_backup();
+      }
+    }
     server_config_.print();
   } else {
     LOG_WARN("Read system config from inner table error", K(ret));