DBWN
writes modified buffers in the database buffer cache to disk:There are no free buffersEvery 3 secondsDuring a checkpointWhen there are too many dirty buffersWhen the instance shutdown cleanly when a table space changes status.
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DBWN
writes modified buffers in the database buffer cache to disk:There are no free buffersEvery 3 secondsDuring a checkpointWhen there are too many dirty buffersWhen the instance shutdown cleanly when a table space changes status.