diff --git a/src/redis_request.cc b/src/redis_request.cc
index 7d896d2be97..64de2f1b312 100644
--- a/src/redis_request.cc
+++ b/src/redis_request.cc
@@ -200,6 +200,14 @@ void Request::ExecuteCommands(Connection *conn) {
     auto start = std::chrono::high_resolution_clock::now();
     bool is_profiling = isProfilingEnabled(cmd_name);
     svr_->IncrExecutingCommandNum();
+    // Need to check again, because we set loading firstly and then check
+    // excuting_command_num_, there may be some commands when loading is 1
+    // and excuting_command_num_ is 0, these commands may access storage DB.
+    if (svr_->IsLoading() && !inCommandWhitelist(conn->current_cmd_->Name())) {
+      svr_->DecrExecutingCommandNum();
+      conn->Reply(Redis::Error("ERR restoring the db from backup"));
+      break;
+    }
     s = conn->current_cmd_->Execute(svr_, conn, &reply);
     svr_->DecrExecutingCommandNum();
     auto end = std::chrono::high_resolution_clock::now();
diff --git a/src/server.cc b/src/server.cc
index 2d8eb217c34..fbcde791ffa 100644
--- a/src/server.cc
+++ b/src/server.cc
@@ -451,11 +451,11 @@ int Server::DecrMonitorClientNum() {
 }
 
 int Server::IncrExecutingCommandNum() {
-  return excuting_command_num_.fetch_add(1, std::memory_order_relaxed);
+  return excuting_command_num_.fetch_add(1, std::memory_order_seq_cst);
 }
 
 int Server::DecrExecutingCommandNum() {
-  return excuting_command_num_.fetch_sub(1, std::memory_order_relaxed);
+  return excuting_command_num_.fetch_sub(1, std::memory_order_seq_cst);
 }
 
 std::atomic<uint64_t> *Server::GetClientID() {