functions/Get-DbaExternalProcess.ps1

function Get-DbaExternalProcess {
    <#
    .SYNOPSIS
        Gets OS processes created by SQL Server
 
    .DESCRIPTION
        Gets OS processes created by SQL Server
 
        Helps when finding hung sessions with External Wait Types
 
        https://web.archive.org/web/20201027122300/http://vickyharp.com/2013/12/killing-sessions-with-external-wait-types/
 
    .PARAMETER ComputerName
        The target SQL Server host computer
 
    .PARAMETER Credential
        Allows you to login to $ComputerName using alternative credentials.
 
    .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, Process
        Author: Chrissy LeMaire (@cl), netnerds.net
 
        Website: https://dbatools.io
        Copyright: (c) 2021 by dbatools, licensed under MIT
        License: MIT https://opensource.org/licenses/MIT
 
    .LINK
        https://dbatools.io/Get-DbaExternalProcess
 
    .EXAMPLE
        PS C:\> Get-DbaExternalProcess -ComputerName SERVER01, SERVER02
 
        Gets OS processes created by SQL Server on SERVER01 and SERVER02
 
    #>

    [CmdletBinding()]
    param (
        [parameter(ValueFromPipeline, Mandatory)]
        [DbaInstanceParameter[]]$ComputerName,
        [PSCredential]$Credential,
        [switch]$EnableException
    )
    process {
        foreach ($computer in $ComputerName) {
            try {
                $sqlpid = (Get-DbaCmObject -ComputerName $computer -Credential $Credential -ClassName win32_process | Where-Object ProcessName -eq "sqlservr.exe").ProcessId
                $processes = Get-DbaCmObject -ComputerName $computer -Credential $Credential -ClassName win32_process | Where-Object ParentProcessId -eq $sqlpid

                foreach ($process in $processes) {
                    [PSCustomObject]@{
                        ComputerName   = $computer
                        Credential     = $Credential
                        ProcessId      = $process.ProcessId
                        Name           = $process.Name
                        HandleCount    = $process.HandleCount
                        WorkingSetSize = $process.WorkingSetSize
                        VirtualSize    = $process.VirtualSize
                        CimObject      = $process
                    } | Select-DefaultView -Property ComputerName, ProcessId, Name, HandleCount, WorkingSetSize, VirtualSize, CimObject
                }
            } catch {
                Stop-Function -Message "Failure for $computer" -ErrorRecord $_ -Continue
            }
        }
    }
}
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