Which two statements about the background process of the database writer are true（）A、It is possible to have multiple database writers in an Oracle instance.B、It writes dirty buffers， if any， to data files whenever a checkpoint occurs.C、It writes dirty buf

题目

Which two statements about the background process of the database writer are true（）

A、It is possible to have multiple database writers in an Oracle instance.
B、It writes dirty buffers， if any， to data files whenever a checkpoint occurs.
C、It writes dirty buffers， if any， to data files whenever a transaction commits.
D、It writes dirty buffers， if any， to data files before the log writer （LGWR） writes

参考答案和解析

正确答案:A,B

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Which two statements

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