functions/Clear-DbaWaitStatistics.ps1
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function Clear-DbaWaitStatistics { <# .SYNOPSIS Clears wait statistics .DESCRIPTION Reset the aggregated statistics - basically just executes DBCC SQLPERF (N'sys.dm_os_wait_stats', CLEAR) .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 $cred to the param. Windows Authentication will be used if DestinationSqlCredential is not specified. To connect as a different Windows user, run PowerShell as that user. .PARAMETER WhatIf If this switch is enabled, no actions are performed but informational messages will be displayed that explain what would happen if the command were to run. .PARAMETER Confirm If this switch is enabled, you will be prompted for confirmation before executing any operations that change state. .PARAMETER Silent Use this switch to disable any kind of verbose messages .NOTES Tags: WaitStatistic Website: https://dbatools.io Copyright: (C) Chrissy LeMaire, clemaire@gmail.com License: GNU GPL v3 https://opensource.org/licenses/GPL-3.0 .LINK https://dbatools.io/Clear-DbaWaitStatistics .EXAMPLE Clear-DbaWaitStatistics -SqlInstance sql2008, sqlserver2012 After confirmation, clears wait stats on servers sql2008 and sqlserver2012 .EXAMPLE Clear-DbaWaitStatistics -SqlInstance sql2008, sqlserver2012 -Confirm:$false Clears wait stats on servers sql2008 and sqlserver2012, without prompting #> [CmdletBinding(ConfirmImpact = 'High', SupportsShouldProcess)] param ( [parameter(Position = 0, Mandatory = $true, ValueFromPipeline = $True)] [Alias("ServerInstance", "SqlServer", "SqlServers")] [DbaInstance[]]$SqlInstance, [PSCredential]$SqlCredential, [switch]$Silent ) process { foreach ($instance in $SqlInstance) { Write-Message -Level Verbose -Message "Attempting to connect to $instance" try { $server = Connect-SqlInstance -SqlInstance $instance -SqlCredential $SqlCredential -MinimumVersion 9 } catch { Stop-Function -Message "Failure" -Category ConnectionError -ErrorRecord $_ -Target $instance -Continue } if ($Pscmdlet.ShouldProcess($instance, "Performing CLEAR of sys.dm_os_wait_stats")) { try { $server.Query("DBCC SQLPERF (N'sys.dm_os_wait_stats', CLEAR);") $status = "Success" } catch { $status = $_.Exception } [PSCustomObject]@{ ComputerName = $server.NetName InstanceName = $server.ServiceName SqlInstance = $server.DomainInstanceName Status = $status } } } } } |