protected function execute(InputInterface $input, OutputInterface $output)
    {
        $io = new SymfonyStyle($input, $output);

        // タイムアウトを無効にする.
        set_time_limit(0);
        ini_set('memory_limit', '8G');

        $this->entityManager->getConfiguration()->setSQLLogger(null);
        // $this->entityManager->getConnection()->beginTransaction();

        try {
            $loop_count_success = 0;

            // 更新日時が3ヶ月以上前の「購入処理中」「決済処理中」の受注データ            
            $qb = $this->orderRepository->createQueryBuilder('o')
                ->select('o, s, oi')
                ->leftJoin('o.OrderItems', 'oi')
                ->innerJoin('o.Shippings', 's');

            $statuses = $this->orderStatusRepository->findBy(['id' => [OrderStatus::PROCESSING, OrderStatus::PENDING]]);
            $qb->andWhere($qb->expr()->in('o.OrderStatus', ':status'))
                ->setParameter('status', $statuses);

            $update_date_end = (new \DateTime())->modify('-'.$this->eccubeConfig['eccube_order_delete_days'].' days')->modify('+1 days');
            $qb->andWhere('o.update_date < :update_date_end')
                ->setParameter('update_date_end', $update_date_end);

            $qb->orderBy('o.id', 'ASC');
            
            $qb->setMaxResults(20); // メモリーリーク対策

            $Orders = $qb->getQuery()->getResult();
            while (count($Orders) > 0) {
                foreach ($Orders as $Order) {
                    $order_id = $Order->getId();
                    // $YamatoOrder = $Order->getYamatoOrder();
                    // if ($YamatoOrder) {
                    //     $Order->setYamatoOrder(null);    // Call to a member function getMemo03() on null エラーになる
                    //     $this->entityManager->remove($YamatoOrder);
                    // }
                    $MailHistories = $Order->getMailHistories();
                    if ($MailHistories && count($MailHistories) > 0) {
                        foreach ($Order->getMailHistories() as $MailHistory) {
                            $Order->removeMailHistory($MailHistory);
                            $this->entityManager->remove($MailHistory);
                        }
                    }
                    foreach ($Order->getShippings() as $Shipping) {
                        foreach ($Shipping->getOrderItems() as $OrderItem) {
                            $Shipping->removeOrderItem($OrderItem);
                            $this->entityManager->remove($OrderItem);
                        }
                        $Order->removeShipping($Shipping);
                        $this->entityManager->remove($Shipping);
                    }
                    $this->entityManager->remove($Order);
                    $this->entityManager->flush();

                    log_info('受注情報削除', ['order_id' => $order_id]);
                    $io->success(date('Y-m-d H:i:s',time()) . ' (order_id:' . $order_id . ')');

                    $loop_count_success++;
                }

                $Orders = $qb->getQuery()->getResult();
                break;
            }
            // $this->entityManager->flush();
            // $this->entityManager->getConnection()->commit();
            $io->success(date('Y-m-d H:i:s',time()) . ' (count:' . $loop_count_success . ')');
        } catch (\Exception $e) {
            // $this->entityManager->getConnection()->rollback();
            $io->error($e->getMessage());
        }
    }