dbatools

1.1.19

functions/Test-DbaOptimizeForAdHoc.ps1

                                function Test-DbaOptimizeForAdHoc {

    <#

    .SYNOPSIS

        Displays information relating to SQL Server Optimize for AdHoc Workloads setting.  Works on SQL Server 2008-2016.

    .DESCRIPTION

        When this option is set, plan cache size is further reduced for single-use ad hoc OLTP workload.

        More info: https://msdn.microsoft.com/en-us/library/cc645587.aspx

        http://www.sqlservercentral.com/blogs/glennberry/2011/02/25/some-suggested-sql-server-2008-r2-instance-configuration-settings/

        These are just general recommendations for SQL Server and are a good starting point for setting the "optimize for ad-hoc workloads" option.

    .PARAMETER SqlInstance

        A collection of one or more SQL Server instance names to query.

    .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 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: Configure, SPConfigure

        Author: Brandon Abshire, netnerds.net

        Website: https://dbatools.io

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

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

    .LINK

        https://dbatools.io/Test-DbaOptimizeForAdHoc

    .EXAMPLE

        PS C:\> Test-DbaOptimizeForAdHoc -SqlInstance sql2008, sqlserver2012

        Validates whether Optimize for AdHoc Workloads setting is enabled for servers sql2008 and sqlserver2012.

    #>

    [CmdletBinding()]

    param (

        [parameter(Mandatory, ValueFromPipeline)]

        [DbaInstance[]]$SqlInstance,

        [PSCredential]$SqlCredential,

        [switch]$EnableException

    )

    begin {

        $notesAdHocZero = "Recommended configuration is 1 (enabled)."

        $notesAsRecommended = "Configuration is already set as recommended."

        $recommendedValue = 1

    }

    process {

        foreach ($instance in $SqlInstance) {

            try {

                $server = Connect-DbaInstance -SqlInstance $instance -SqlCredential $SqlCredential -MinimumVersion 10

            } catch {

                Stop-Function -Message "Failure" -Category ConnectionError -ErrorRecord $_ -Target $instance -Continue

            }

            #Get current configured value

            $optimizeAdHoc = $server.Configuration.OptimizeAdhocWorkloads.ConfigValue

            #Setting notes for optimize adhoc value

            if ($optimizeAdHoc -eq $recommendedValue) {

                $notes = $notesAsRecommended

            } else {

                $notes = $notesAdHocZero

            }

            [pscustomobject]@{

                ComputerName             = $server.ComputerName

                InstanceName             = $server.ServiceName

                SqlInstance              = $server.DomainInstanceName

                CurrentOptimizeAdHoc     = $optimizeAdHoc

                RecommendedOptimizeAdHoc = $recommendedValue

                Notes                    = $notes

            }

        }

    }

}

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