DBCC DROPCLEANBUFFERS失效了？

你也可以通过如下语句查看当前内存中clean页面和脏页的数量和大小：

SELECT *,

[DirtyPageCount] * 8 / 1024 AS [DirtyPageMB],

[CleanPageCount] * 8 / 1024 AS [CleanPageMB]

FROM

(SELECT

(CASE WHEN ([database_id] = 32767)

THEN N‘Resource Database‘

ELSE DB_NAME ([database_id]) END) AS [DatabaseName],

SUM (CASE WHEN ([is_modified] = 1)

THEN 1 ELSE 0 END) AS [DirtyPageCount],

SUM (CASE WHEN ([is_modified] = 1)

THEN 0 ELSE 1 END) AS [CleanPageCount]

FROM sys.dm_os_buffer_descriptors

GROUP BY [database_id]) AS [buffers]

ORDER BY [DatabaseName]

GO

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