答案解析
Which three types of processing use an exclusive pinned buffer in the Oracle buffer cache?
- A、database block is in the process of being updated
- B、A database block read physical operation is in progress into a previously used buffer.
- C、A database block physical read operation is in progress into a previously free and empty buffer.
- D、A previously read database block has been updated but not yet committed
- E、A database block logical read operation is in progress from a used buffer.
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