フリー問題

問題文

A database team insists on the application-consistent option for its transactional database instead of accepting the simpler setting. Why does that database need it?

選択肢

1. That particular database needs the application-consistent option because a plain crash-consistent copy would leave duplicate blocks inside the captured image, so the restored instance would need added reduction pass afterwards.
2. That particular database needs the application-consistent option because a plain crash-consistent copy would leave expired snapshots inside the captured image, so the restored instance would need fresh cleanup runs afterwards.
3. That particular database needs the application-consistent option because a plain crash-consistent copy would leave unflushed writes inside the captured image, so the restored instance would need extra repair work afterwards.
4. That particular database needs the application-consistent option because a plain crash-consistent copy would leave stale indexes inside the captured image, so the restored instance would need lengthy rebuild steps afterwards.