new cool stuff from generous community

Author: Alexander Shelemin

MaintenanceSolution.sql

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+
+DECLARE @total_buffer INT;
+
+SELECT @total_buffer = cntr_value
+   FROM sys.dm_os_performance_counters 
+   WHERE RTRIM([object_name]) LIKE '%Buffer Manager'
+   AND counter_name = 'Total Pages';
+
+;WITH src AS
+(
+   SELECT 
+       database_id, db_buffer_pages = COUNT_BIG(*)
+       FROM sys.dm_os_buffer_descriptors
+       --WHERE database_id BETWEEN 5 AND 32766
+       GROUP BY database_id
+)
+SELECT
+   [db_name] = CASE [database_id] WHEN 32767 
+       THEN 'Resource DB' 
+       ELSE DB_NAME([database_id]) END,
+   db_buffer_pages,
+   db_buffer_MB = db_buffer_pages / 128,
+   db_buffer_percent = CONVERT(DECIMAL(6,3), 
+       db_buffer_pages * 100.0 / @total_buffer)
+FROM src
+ORDER BY db_buffer_MB DESC;

cache_usage_per_db.txt

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+
+;WITH src AS
+(
+   SELECT
+       [Object] = o.name,
+       [Type] = o.type_desc,
+       [Index] = COALESCE(i.name, ''),
+       [Index_Type] = i.type_desc,
+       p.[object_id],
+       p.index_id,
+       au.allocation_unit_id
+   FROM
+       sys.partitions AS p
+   INNER JOIN
+       sys.allocation_units AS au
+       ON p.hobt_id = au.container_id
+   INNER JOIN
+       sys.objects AS o
+       ON p.[object_id] = o.[object_id]
+   INNER JOIN
+       sys.indexes AS i
+       ON o.[object_id] = i.[object_id]
+       AND p.index_id = i.index_id
+   WHERE
+       au.[type] IN (1,2,3)
+       AND o.is_ms_shipped = 0
+)
+SELECT
+   src.[Object],
+   src.[Type],
+   src.[Index],
+   src.Index_Type,
+   buffer_pages = COUNT_BIG(b.page_id),
+   buffer_mb = COUNT_BIG(b.page_id) / 128
+FROM
+   src
+INNER JOIN
+   sys.dm_os_buffer_descriptors AS b
+   ON src.allocation_unit_id = b.allocation_unit_id
+WHERE
+   b.database_id = DB_ID()
+GROUP BY
+   src.[Object],
+   src.[Type],
+   src.[Index],
+   src.Index_Type
+ORDER BY
+   buffer_pages DESC;