SQL Server Mentalist

BI SQL # 183 : SQL Server DBA Scripts : Pages per object in buffer pool

October 13, 2013 7:00 am

Hi Folks,

In this article we are going to cover Pages per object in buffer pool.

In this post we are going to discuss following points:

Problem Statement of SQL Script:

Description of SQL Script:

SQL Script Output Column

SQL Script Code

SQL Script Output Screenshot

User Level to execute

Problem Statement of SQL Script:

Find pages per object in buffer pool.

Description of SQL Script:

This Transact-SQL script lists buffer statistics for all Tables in the database.

SQL Script Output Column

SQL Script Code

SELECT SCH.NAME + '.' + OBJ.NAME AS ObjectName
    ,MAX(OBJ.type_desc) AS ObjectType
    ,IDX.NAME AS IndexName
    ,MAX(IDX.type_desc) AS IndexType
    ,OBD.page_type AS PageType
    ,COUNT(OBD.page_id) AS PagesInOsBuffer
    ,SUM(AU.total_pages) AS OfTotalObjectPages
    ,SUM(OBD.row_count) AS RowsInOsBuffer
    ,SUM(PRT.rows) AS OfTotalObjectRows
FROM sys.dm_os_buffer_descriptors AS OBD
INNER JOIN sys.allocation_units AS AU ON OBD.allocation_unit_id = 
    AU.allocation_unit_id
INNER JOIN sys.partitions AS PRT ON (
        AU.container_id = PRT.partition_id
        AND AU.type = 2
        )
    OR (
        AU.container_id = PRT.hobt_id
        AND AU.type IN (
            1
            ,3
            )
        )
INNER JOIN sys.objects AS OBJ ON PRT.object_id = OBJ.object_id
INNER JOIN sys.schemas AS SCH ON OBJ.schema_id = SCH.schema_id
INNER JOIN sys.indexes AS IDX ON PRT.object_id = IDX.object_id
    AND PRT.index_id = IDX.index_id
WHERE OBD.database_id = DB_ID() -- Only objec 
    AND OBJ.type = 'U' -- Filter on user tables 
GROUP BY SCH.NAME
    ,OBJ.NAME
    ,IDX.NAME
    ,OBD.page_type
ORDER BY PagesInOsBuffer DESC
    ,ObjectName ASC

SQL Script Output Screenshot

User Level to execute

300

Hope you will like to Pages per object in buffer pool.

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Posted by Vishal Pawar

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