dbatools

1.1.53

functions/Get-DbaTraceFlag.ps1

                                function Get-DbaTraceFlag {

    <#

    .SYNOPSIS

        Get global Trace Flag(s) information for each instance(s) of SQL Server.

    .DESCRIPTION

        Returns Trace Flags that are enabled globally on each instance(s) of SQL Server as an object.

    .PARAMETER SqlInstance

        The target SQL Server instance or instances. This can be a collection and receive pipeline input to allow the function to be executed against multiple SQL Server 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

        Use this switch to filter to a specific Trace Flag.

    .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: Diagnostic, TraceFlag, DBCC

        Author: Kevin Bullen (@sqlpadawan)

        Website: https://dbatools.io

        Copyright: (c) 2018 by dbatools, licensed under MIT

        License: MIT https://opensource.org/licenses/MIT

        References:  https://docs.microsoft.com/en-us/sql/t-sql/database-console-commands/dbcc-traceon-trace-flags-transact-sql

    .LINK

        https://dbatools.io/Get-DbaTraceFlag

    .EXAMPLE

        PS C:\> Get-DbaTraceFlag -SqlInstance localhost

        Returns all Trace Flag information on the local default SQL Server instance

    .EXAMPLE

        PS C:\> Get-DbaTraceFlag -SqlInstance localhost, sql2016

        Returns all Trace Flag(s) for the local and sql2016 SQL Server instances

    .EXAMPLE

        PS C:\> Get-DbaTraceFlag -SqlInstance localhost -TraceFlag 4199,3205

        Returns Trace Flag status for TF 4199 and 3205 for the local SQL Server instance if they are enabled.

    #>

    [CmdletBinding()]

    param (

        [parameter(Mandatory, ValueFromPipeline)]

        [DbaInstanceParameter[]]$SqlInstance,

        [PSCredential]

        $SqlCredential,

        [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

            }

            $tflags = $server.EnumActiveGlobalTraceFlags()

            if ($tFlags.Rows.Count -eq 0) {

                Write-Message -Level Output -Message "No global trace flags enabled"

                return

            }

            if ($TraceFlag) {

                $tflags = $tflags | Where-Object TraceFlag -In $TraceFlag

            }

            foreach ($tflag in $tflags) {

                [pscustomobject]@{

                    ComputerName = $server.ComputerName

                    InstanceName = $server.ServiceName

                    SqlInstance  = $server.DomainInstanceName

                    TraceFlag    = $tflag.TraceFlag

                    Global       = $tflag.Global

                    Session      = $tflag.Session

                    Status       = $tflag.Status

                } | Select-DefaultView -ExcludeProperty 'Session'

            }

        }

    }

}

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