You are working̳
题目
You are working on a database, where you have three redo log groups. When the database is down for a backup, an operating system (OS) user deletes all the redo log files in a group. What will happen when you open your database?()
- A、 The instance starts, the database is mounted, but efforts to open the database fail, and an error about the missing redo log group is displayed.
- B、 Before the instance starts, you receive an error about the missing redo log files of a group.
- C、 The instance starts and the database opens with an error message written to the alert log file.
- D、 The instance starts and the database opens because two redo log groups still exist.
- E、 The instance starts and the database opens, but every attempt to write to redo log files fails with an error.