多項選擇題

Last night， a media failure caused the loss of a temporary file that belongs to your database. Which two things may happen this morning when you try to open your database？（）

A. The database writer writes to a trace file， indicating that the temporary file is not found.
B. The database prompts for a database recovery.
C. The database opens normally.
D. The database gets mounted and throws an error indicating that the temporary file requires recovery.

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