functions/Get-DbaQueryExecutionTime.ps1
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Function Get-DbaQueryExecutionTime { <# .SYNOPSIS Displays Stored Procedures and Ad hoc queries with the highest execution times. Works on SQL Server 2008 and above. .DESCRIPTION Quickly find slow query executions within a database. Results will include stored procedures and individual SQL statements. .PARAMETER SqlInstance Allows you to specify a comma separated list of servers to query. .PARAMETER SqlCredential Allows you to login to servers using SQL Logins as opposed to Windows Auth/Integrated/Trusted. To use: $cred = Get-Credential, this pass this $cred to the param. Windows Authentication will be used if DestinationSqlCredential is not specified. To connect as a different Windows user, run PowerShell as that user. .PARAMETER MaxResultsPerDb Allows you to limit the number of results returned, as many systems can have very large amounts of query plans. Default value is 100 results. .PARAMETER MinExecs Allows you to limit the scope to queries that have been executed a minimum number of time. Default value is 100 executions. .PARAMETER MinExecMs Allows you to limit the scope to queries with a specified average execution time. Default value is 500 (ms). .PARAMETER NoSystemDb Allows you to suppress output on system databases .NOTES Author: Brandon Abshire, netnerds.net Tags: Query, Performance dbatools PowerShell module (https://dbatools.io, clemaire@gmail.com) Copyright (C) 2016 Chrissy LeMaire This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. .LINK https://dbatools.io/Get-DbaQueryExecutionTime .EXAMPLE Get-DbaQueryExecutionTime -SqlServer sql2008, sqlserver2012 Return the top 100 slowest stored procedures or statements for servers sql2008 and sqlserver2012. .EXAMPLE Get-DbaQueryExecutionTime -SqlServer sql2008 -Database TestDB Return the top 100 slowest stored procedures or statements on server sql2008 for only the TestDB database. .EXAMPLE Get-DbaQueryExecutionTime -SqlServer sql2008 -Database TestDB -MaxResultsPerDb 100 -MinExecs 200 -MinExecMs 1000 Return the top 100 slowest stored procedures or statements on server sql2008 for only the TestDB database, limiting results to queries with more than 200 total executions and an execution time over 1000ms or higher. #> [CmdletBinding()] Param ( [parameter(Position = 0, Mandatory = $true, ValueFromPipeline = $True)] [Alias("ServerInstance", "SqlServer", "SqlServers")] [string[]]$SqlInstance, [System.Management.Automation.PSCredential]$SqlCredential, [parameter(Position = 1, Mandatory = $false)] [int]$MaxResultsPerDb = 100, [parameter(Position = 2, Mandatory = $false)] [int]$MinExecs = 100, [parameter(Position = 3, Mandatory = $false)] [int]$MinExecMs = 500, [parameter(Position = 4, Mandatory = $false)] [switch]$NoSystemDb ) DynamicParam { if ($SqlInstance) { return Get-ParamSqlDatabases -SqlServer $SqlInstance[0] -SqlCredential $SqlCredential } } BEGIN { $databases = $psboundparameters.Databases $exclude = $psboundparameters.Exclude $MaxResultsPerDb = $psboundparameters.MaxResultsPerDb $MinExecs = $psboundparameters.MinExecs $MinExecMs = $psboundparameters.MinExecMs $sql = ";With StatsCTE AS ( SELECT DB_NAME() as DatabaseName, (total_worker_time / execution_count) / 1000 AS AvgExec_ms , execution_count , max_worker_time / 1000 AS MaxExec_ms , OBJECT_NAME(object_id) as ProcName, object_id, type_desc, cached_time, last_execution_time, total_worker_time / 1000 as total_worker_time_ms, total_elapsed_time / 1000 as total_elapsed_time_ms, OBJECT_NAME(object_id) as SQLText, OBJECT_NAME(object_id) as full_statement_text FROM sys.dm_exec_procedure_stats WHERE database_id = DB_ID()" If ($MinExecs) { $sql += "`n AND execution_count >= " + $MinExecs } If ($MinExecMs) { $sql += "`n AND (total_worker_time / execution_count) / 1000 >= " + $MinExecMs } $sql += "`n UNION SELECT DB_NAME() as DatabaseName, ( qs.total_worker_time / qs.execution_count ) / 1000 AS AvgExec_ms , qs.execution_count , qs.max_worker_time / 1000 AS MaxExec_ms , OBJECT_NAME(st.objectid) as ProcName, st.objectid as [object_id], 'STATEMENT' as type_desc, '1901-01-01 00:00:00' as cached_time, qs.last_execution_time, qs.total_worker_time / 1000 as total_worker_time_ms, qs.total_elapsed_time / 1000 as total_elapsed_time_ms, SUBSTRING(st.text, (qs.statement_start_offset/2)+1, 50) + '...' AS SQLText, SUBSTRING(st.text, (qs.statement_start_offset/2)+1, ((CASE qs.statement_end_offset WHEN -1 THEN DATALENGTH(st.text) ELSE qs.statement_end_offset END - qs.statement_start_offset)/2) + 1) AS full_statement_text FROM sys.dm_exec_query_stats qs CROSS APPLY sys.dm_exec_plan_attributes(qs.plan_handle) as pa CROSS APPLY sys.dm_exec_sql_text(qs.sql_handle) as st WHERE st.dbid = DB_ID() OR (pa.attribute = 'dbid' and pa.value = DB_ID())" If ($MinExecs) { $sql += "`n AND execution_count >= " + $MinExecs } If ($MinExecMs) { $sql += "`n AND (total_worker_time / execution_count) / 1000 >= " + $MinExecMs } If ($MaxResultsPerDb) { $sql += ")`n SELECT TOP " + $MaxResultsPerDb } Else { $sql += ") SELECT " } $sql += "`n DatabaseName, AvgExec_ms, execution_count, MaxExec_ms, ProcName, object_id, type_desc, cached_time, last_execution_time, total_worker_time_ms, total_elapsed_time_ms, SQLText, full_statement_text FROM StatsCTE " If ($MinExecs -or $MinExecMs) { $sql += "`n WHERE `n" If ($MinExecs) { $sql += " execution_count >= " + $MinExecs } If ($MinExecMs -gt 0 -and $MinExecs) { $sql += "`n AND AvgExec_ms >= " + $MinExecMs } elseif ($MinExecMs) { $sql += "`n AvgExecs_ms >= " + $MinExecMs } } $sql += "`n ORDER BY AvgExec_ms DESC" } PROCESS { if (!$MaxResultsPerDb -and !$MinExecs -and !$MinExecMs) { Write-Warning "Results may take time, depending on system resources and size of buffer cache." Write-Warning "Consider limiting results using -MaxResultsPerDb, -MinExecs and -MinExecMs parameters." } foreach ($instance in $SqlInstance) { Write-Verbose "Attempting to connect to $instance" try { $server = Connect-SqlServer -SqlServer $instance -SqlCredential $SqlCredential } catch { Write-Warning "Can't connect to $instance or access denied. Skipping." continue } if ($server.versionMajor -lt 10) { Write-Warning "This function does not support versions lower than SQL Server 2008 (v10). Skipping server $instance." Continue } $dbs = $server.Databases if ($databases.count -gt 0) { $dbs = $dbs | Where-Object { $databases -contains $_.Name } } if ($NoSystemDb) { $dbs = $dbs | Where-Object { $_.IsSystemObject -eq $false } } if ($exclude.count -gt 0) { $dbs = $dbs | Where-Object { $exclude -notcontains $_.Name } } foreach ($db in $dbs) { Write-Verbose "Processing $db on $instance" if ($db.IsAccessible -eq $false) { Write-Warning "The database $db is not accessible. Skipping database." Continue } foreach ($row in $db.ExecuteWithResults($sql).Tables[0]) { [PSCustomObject]@{ ComputerName = $server.NetName InstanceName = $server.ServiceName SqlInstance = $server.DomainInstanceName Database = $row.DatabaseName ProcName = $row.ProcName ObjectID = $row.object_id Type_Desc = $row.type_desc Executions = $row.Execution_Count AvgExec_ms = $row.AvgExec_ms MaxExec_ms = $row.MaxExec_ms Cached_Time = $row.cached_time Last_Exec_Time = $row.last_execution_time Total_Worker_Time_ms = $row.total_worker_time_ms Total_Elapsed_Time_ms = $row.total_elapsed_time_ms SQLText = $row.SQLText Full_Statement_Text = $row.full_statement_text } | Select-DefaultView -ExcludeProperty Full_Statement_Text } } } } } |