functions/Enable-DbaTraceFlag.ps1
function Enable-DbaTraceFlag { <# .SYNOPSIS Enable Global Trace Flag(s) .DESCRIPTION The function will set one or multiple trace flags on the SQL Server instance(s) listed. These are not persisted after a restart, use Set-DbaStartupParameter to set them to persist after restarts. .PARAMETER SqlInstance The target SQL Server instance or instances. .PARAMETER SqlCredential Login to the target instance using alternative credentials. Accepts PowerShell credentials (Get-Credential). Windows Authentication, SQL Server Authentication, Active Directory - Password, and Active Directory - Integrated are all supported. For MFA support, please use Connect-DbaInstance. .PARAMETER TraceFlag Trace flag number(s) to enable globally .PARAMETER EnableException By default, when something goes wrong we try to catch it, interpret it and give you a friendly warning message. This avoids overwhelming you with "sea of red" exceptions, but is inconvenient because it basically disables advanced scripting. Using this switch turns this "nice by default" feature off and enables you to catch exceptions with your own try/catch. .NOTES Tags: TraceFlag, DBCC Author: Garry Bargsley (@gbargsley), http://blog.garrybargsley.com Website: https://dbatools.io Copyright: (c) 2018 by dbatools, licensed under MIT License: MIT https://opensource.org/licenses/MIT .LINK https://dbatools.io/Enable-DbaTraceFlag .EXAMPLE PS C:\> Enable-DbaTraceFlag -SqlInstance sql2016 -TraceFlag 3226 Enable the trace flag 3226 on SQL Server instance sql2016 .EXAMPLE PS C:\> Enable-DbaTraceFlag -SqlInstance sql2016 -TraceFlag 1117, 1118 Enable multiple trace flags on SQL Server instance sql2016 #> [CmdletBinding()] param ( [parameter(Mandatory, ValueFromPipeline)] [DbaInstanceParameter[]]$SqlInstance, [PSCredential]$SqlCredential, [parameter(Mandatory)] [int[]]$TraceFlag, [switch]$EnableException ) process { foreach ($instance in $SqlInstance) { try { $server = Connect-DbaInstance -SqlInstance $instance -SqlCredential $SqlCredential } catch { Stop-Function -Message "Failure" -Category ConnectionError -ErrorRecord $_ -Target $instance -Continue } $CurrentRunningTraceFlags = Get-DbaTraceFlag -SqlInstance $server -EnableException # We could combine all trace flags but the granularity is worth it foreach ($tf in $TraceFlag) { $TraceFlagInfo = [PSCustomObject]@{ SourceServer = $server.ComputerName InstanceName = $server.ServiceName SqlInstance = $server.DomainInstanceName TraceFlag = $tf Status = $null Notes = $null DateTime = [DbaDateTime](Get-Date) } if ($CurrentRunningTraceFlags.TraceFlag -contains $tf) { $TraceFlagInfo.Status = 'Skipped' $TraceFlagInfo.Notes = "The Trace flag is already running." $TraceFlagInfo Write-Message -Level Warning -Message "The Trace flag [$tf] is already running globally." continue } try { $query = "DBCC TRACEON ($tf, -1)" $server.Query($query) $server.Refresh() } catch { $TraceFlagInfo.Status = "Failed" $TraceFlagInfo.Notes = $_.Exception.Message $TraceFlagInfo Stop-Function -Message "Failure" -ErrorRecord $_ -Target $server -Continue } $TraceFlagInfo.Status = "Successful" $TraceFlagInfo } } } } # SIG # Begin signature block # MIIZewYJKoZIhvcNAQcCoIIZbDCCGWgCAQExCzAJBgUrDgMCGgUAMGkGCisGAQQB # 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