See Also: [[wiki:Transact SQL Code Library|Transact SQL Code Library]] Here's how to find out which data and log files have had the most reads or writes. There's also a line to filter by database name - remove the two minus signs before the WHERE clause, and you can put in your own database name. SELECT DB_NAME(mf.database_id) AS databaseName ,mf.physical_name ,num_of_reads ,num_of_bytes_read ,num_of_writes ,num_of_bytes_written ,size_on_disk_bytes FROM sys.dm_io_virtual_file_stats(NULL, NULL) AS divfs JOIN sys.master_files AS mf ON mf.database_id = divfs.database_id AND mf.file_id = divfs.file_id --WHERE DB_NAME(mf.database_id) = 'tempdb' ORDER BY 1, 3 DESC Query Test Checklist Works on SQL Server 2008: Yes Works on SQL Server 2005: Yes Works on SQL Server 2000: No Works on Standard Edition: Yes Works on case-sensitive servers: Yes
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