Bydefault,checkpointshappenatleastasoftenas（）.A.Redo log switches. B.UPDATE statements are issued against the database. C.The SYSTEM tablespace is accessed. D.SMON coalesces free space in a tablespase.

单项选择题

By default, checkpoints happen at least as often as（）.

A.Redo log switches.
B.UPDATE statements are issued against the database.
C.The SYSTEM tablespace is accessed.
D.SMON coalesces free space in a tablespase.

1Z0-031