是的。尝试
WITH T
AS (SELECT database_id,
page_type,
total_page_count = COUNT(*) OVER(),
page_count = COUNT(*) OVER
(PARTITION BY database_id, page_type),
row_num = ROW_NUMBER() OVER
(PARTITION BY database_id, page_type
ORDER BY (SELECT 0))
FROM sys.dm_os_buffer_descriptors)
SELECT page_type,
page_count,
PercentageOfCache = ROUND(1E2 * page_count/total_page_count, 2),
SizeInCache =
CASE
WHEN page_count > 131072
THEN LTRIM(STR(page_count/131072.0) + ' GB')
WHEN page_count > 128
THEN LTRIM(STR(page_count/128.0) + ' MB')
ELSE LTRIM(STR(page_count * 8) + ' KB')
END
FROM T
WHERE database_id = DB_ID()
AND row_num = 1
ORDER BY page_count DESC
要查看每种页面当前有多少种缓冲区缓存为您的数据库。
专用LOB页面类型为TEXT_MIX_PAGE
和TEXT_TREE_PAGE
,但LOB数据也可以存储在数据页面上。
@Richard'TEXT_MIX_PAGE'和'TEXT_TREE_PAGE' - 我想可能还有另外一种我忘记的类型 - 只要看看SQL Server Internals book ... – 2011-03-09 23:01:58
不是。这就是我认为的LOB页面。 “TEXT_DATA”和“TEXT_TREE_PAGE”是一样的东西[据我所见](http://sqlskills.com/blogs/paul/post/Inside-the-Storage-Engine-Anatomy-of-a-page)。 aspx)如果足够小,varbinary(max)可以存储在页面中。 – 2011-03-09 23:12:57
谢谢。接下来的问题是,我如何告诉SQL不要将二进制数据缓存为当前缓存4GB的二进制数据。 – Jeremy 2011-03-09 23:20:51