script

[sourcecode language=”sql”] SELECT createdate AS [SQL Server Install Date] FROM sys.syslogins WHERE [sid] = 0x010100000000000512000000; [/sourcecode] – This T-SQL command helps to determine the date and time that SQL Server was installed

[sourcecode language=”sql”]SELECT windows_release, windows_service_pack_level, windows_sku, os_language_version FROM sys.dm_os_windows_info OPTION (RECOMPILE); [/sourcecode] – Gives you major OS version, Service Pack, Edition, and language info for the operating system

[sourcecode language=”sql”] SELECT @@VERSION AS [SQL Server and OS Version Info]; or SELECT SERVERPROPERTY(‘productversion’), SERVERPROPERTY (‘productlevel’), SERVERPROPERTY (‘edition’) [/sourcecode] – This T-SQL command will help to determine the version of SQL server you are running and corresponding Windows Operating System version

[sourcecode language=”sql”] SELECT TOP(250) p.name AS [SP Name], qs.execution_count, ISNULL(qs.execution_count/DATEDIFF(Second, qs.cached_time, GETDATE()), 0) AS [Calls/Second], qs.total_worker_time/qs.execution_count AS [AvgWorkerTime], qs.total_worker_time AS [TotalWorkerTime], qs.total_elapsed_time, qs.total_elapsed_time/qs.execution_count AS [avg_elapsed_time], qs.cached_time FROM sys.procedures AS p WITH (NOLOCK) INNER JOIN sys.dm_exec_procedure_stats AS qs WITH (NOLOCK) ON p.[object_id] = qs.[object_id] WHERE qs.database_id = DB_ID() ORDER BY qs.execution_count DESC OPTION (RECOMPILE); [/sourcecode] – This script tells you which cached stored procedures are called the most often – This helps you characterize and baseline your workload

[sourcecode language=”sql”] SELECT TOP(25) p.name AS [SP Name], qs.total_worker_time AS [TotalWorkerTime], qs.total_worker_time/qs.execution_count AS [AvgWorkerTime], qs.execution_count, ISNULL(qs.execution_count/DATEDIFF(Second, qs.cached_time, GETDATE()), 0) AS [Calls/Second], qs.total_elapsed_time, qs.total_elapsed_time/qs.execution_count AS [avg_elapsed_time], qs.cached_time FROM sys.procedures AS p WITH (NOLOCK) INNER JOIN sys.dm_exec_procedure_stats AS qs WITH (NOLOCK) ON p.[object_id] = qs.[object_id] WHERE qs.database_id = DB_ID() ORDER BY qs.total_worker_time DESC OPTION (RECOMPILE); [/sourcecode] — This helps you find the most expensive cached stored procedures from a CPU perspective — You should look at this if you see signs of CPU pressure

[sourcecode language=”sql”] SELECT TOP(25) p.name AS [SP Name], qs.total_logical_reads AS [TotalLogicalReads], qs.total_logical_reads/qs.execution_count AS [AvgLogicalReads],qs.execution_count, ISNULL(qs.execution_count/DATEDIFF(Second, qs.cached_time, GETDATE()), 0) AS [Calls/Second], qs.total_elapsed_time, qs.total_elapsed_time/qs.execution_count AS [avg_elapsed_time], qs.cached_time FROM sys.procedures AS p WITH (NOLOCK) INNER JOIN sys.dm_exec_procedure_stats AS qs WITH (NOLOCK) ON p.[object_id] = qs.[object_id] WHERE qs.database_id = DB_ID() ORDER BY qs.total_logical_reads DESC OPTION (RECOMPILE); [/sourcecode] – This helps you find the most expensive cached stored procedures from a memory perspective – You should look at this if you see signs of memory pressure

[sourcecode language=”sql”] SELECT TOP(25) p.name AS [SP Name],qs.total_physical_reads AS [TotalPhysicalReads], qs.total_physical_reads/qs.execution_count AS [AvgPhysicalReads], qs.execution_count, qs.total_logical_reads,qs.total_elapsed_time, qs.total_elapsed_time/qs.execution_count AS [avg_elapsed_time], qs.cached_time FROM sys.procedures AS p WITH (NOLOCK) INNER JOIN sys.dm_exec_procedure_stats AS qs WITH (NOLOCK) ON p.[object_id] = qs.[object_id] WHERE qs.database_id = DB_ID() AND qs.total_physical_reads > 0 ORDER BY qs.total_physical_reads DESC, qs.total_logical_reads DESC OPTION (RECOMPILE); [/sourcecode] — This helps you find the most expensive cached stored procedures from a read I/O perspective — You should look at this if you see signs of I/O pressure or of memory pressure

[sourcecode language=”sql”] SELECT TOP(25) p.name AS [SP Name], qs.total_logical_writes AS [TotalLogicalWrites], qs.total_logical_writes/qs.execution_count AS [AvgLogicalWrites], qs.execution_count, ISNULL(qs.execution_count/DATEDIFF(Second, qs.cached_time, GETDATE()), 0) AS [Calls/Second], qs.total_elapsed_time, qs.total_elapsed_time/qs.execution_count AS [avg_elapsed_time], qs.cached_time FROM sys.procedures AS p WITH (NOLOCK) INNER JOIN sys.dm_exec_procedure_stats AS qs WITH (NOLOCK) ON p.[object_id] = qs.[object_id] WHERE qs.database_id = DB_ID() ORDER BY qs.total_logical_writes DESC OPTION (RECOMPILE); [/sourcecode] — Logical writes relate to both memory and disk I/O pressure — This helps you find the most expensive cached stored procedures from a write I/O perspective

[sourcecode language=”sql”] SELECT TOP(50) OBJECT_NAME(qt.objectid) AS [SP Name], (qs.total_logical_reads + qs.total_logical_writes) /qs.execution_count AS [Avg IO], SUBSTRING(qt.[text],qs.statement_start_offset/2, (CASE WHEN qs.statement_end_offset = -1 THEN LEN(CONVERT(nvarchar(max), qt.[text])) * 2 ELSE qs.statement_end_offset END – qs.statement_start_offset)/2) AS [Query Text] FROM sys.dm_exec_query_stats AS qs WITH (NOLOCK) CROSS APPLY sys.dm_exec_sql_text(qs.sql_handle) AS qt WHERE qt.[dbid] = DB_ID() ORDER BY [Avg IO] DESC OPTION (RECOMPILE); [/sourcecode] — Helps you find the most expensive statements for I/O by SP