dbatools

1.0.166

functions/Disable-DbaTraceFlag.ps1

                                function Disable-DbaTraceFlag {

    <#

    .SYNOPSIS

        Disable a Global Trace Flag that is currently running

    .DESCRIPTION

        The function will disable a Trace Flag that is currently running globally 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 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/Disable-DbaTraceFlag

    .EXAMPLE

        PS C:\> Disable-DbaTraceFlag -SqlInstance sql2016 -TraceFlag 3226

        Disable the globally running trace flag 3226 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-SqlInstance -SqlInstance $instance -SqlCredential $SqlCredential

            } catch {

                Stop-Function -Message "Error occurred while establishing connection to $instance" -Category ConnectionError -ErrorRecord $_ -Target $instance -Continue

            }

            $current = Get-DbaTraceFlag -SqlInstance $server -EnableException

            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 ($tf -notin $current.TraceFlag) {

                    $TraceFlagInfo.Status = 'Skipped'

                    $TraceFlagInfo.Notes = "Trace Flag is not running."

                    $TraceFlagInfo

                    Write-Message -Level Warning -Message "Trace Flag $tf is not currently running on $instance"

                    continue

                }

                try {

                    $query = "DBCC TRACEOFF ($tf, -1)"

                    $server.Query($query)

                } catch {

                    $TraceFlagInfo.Status = "Failed"

                    $TraceFlagInfo.Notes = $_.Exception.Message

                    $TraceFlagInfo

                    Stop-Function -Message "Failure" -ErrorRecord $_ -Target $server -Continue

                }

                $TraceFlagInfo.Status = "Successful"

                $TraceFlagInfo

            }

        }

    }

}

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