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BI SQL # 206 : SQL Server DBA Scripts : Identify IO Stall For Each DB
Hi Folks,
In this article we are going to cover How to Identify IO Stall For Each DB.
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:
How to Identify IO Stall For Each DB?
Description of SQL Script:
This script will help to identify IO Stall For Each DB.
SQL Script Output Column
SQL Script Code
SELECT DB_NAME(database_id) AS [Database Name] ,file_id ,io_stall_read_ms ,num_of_reads ,CAST(io_stall_read_ms / (1.0 + num_of_reads) AS NUMERIC(10, 1)) AS [avg_read_stall_ms] ,io_stall_write_ms ,num_of_writes ,CAST(io_stall_write_ms / (1.0 + num_of_writes) AS NUMERIC(10, 1)) AS [avg_write_stall_ms] ,io_stall_read_ms + io_stall_write_ms AS [io_stalls] ,num_of_reads + num_of_writes AS [total_io] ,CAST((io_stall_read_ms + io_stall_write_ms) /
(1.0 + num_of_reads + num_of_writes ) AS NUMERIC(10, 1)) AS [avg_io_stall_ms] -- into AverageStallsPerReadWrite FROM sys.dm_io_virtual_file_stats(NULL, NULL) ORDER BY avg_io_stall_ms DESC;
SQL Script Output Screenshot
User Level to execute
- 300
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Categories: Link, Microsoft SQL Server, MSBI, Optimization, Query, Script, SQL Mentalist, SQL PraRup, SQL Query, SQL Server, Technology,, TSQL, Vishal Pawar
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