functions/Test-DbaFullRecoveryModel.ps1

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function Test-DbaFullRecoveryModel {
    <#
    .SYNOPSIS
        Find if database is really in the Full recovery model or not.
 
    .DESCRIPTION
        When you switch a database into FULL recovery model, it will behave like a SIMPLE recovery model until a full backup is taken in order to begin a log backup chain.
        This state is also known as 'pseudo-Simple'.
 
        Inspired by Paul Randal's post (http://www.sqlskills.com/blogs/paul/new-script-is-that-database-really-in-the-full-recovery-mode/)
 
    .PARAMETER SqlInstance
        The SQL Server instance.
 
    .PARAMETER SqlCredential
        Allows you to login to servers using SQL Logins as opposed to Windows Auth/Integrated/Trusted. To use:
 
        $scred = Get-Credential, then pass $scred object to the -SqlCredential parameter.
 
        Windows Authentication will be used if SqlCredential is not specified. SQL Server does not accept Windows credentials being passed as credentials. To connect as a different Windows user, run PowerShell as that user.
 
    .PARAMETER Database
        The database(s) to process - this list is auto-populated from the server. If unspecified, all databases will be processed.
 
    .PARAMETER ExcludeDatabase
        The database(s) to exclude - this list is auto-populated from the server
 
    .PARAMETER Detailed
        Returns default information plus 'Notes' column
 
    .NOTES
        Tags: DisasterRecovery, Backup
        Author: Claudio Silva (@ClaudioESSilva)
 
        Website: https://dbatools.io
        Copyright: (C) Chrissy LeMaire, clemaire@gmail.com
        License: GNU GPL v3 https://opensource.org/licenses/GPL-3.0
 
    .LINK
        https://dbatools.io/Test-DbaFullRecoveryModel
 
    .EXAMPLE
        Test-DbaFullRecoveryModel -SqlInstance sql2005
 
        Shows all databases which actual configured recovery model is FULL and says if they are really in FULL recovery model or not
 
    .EXAMPLE
        Test-DbaFullRecoveryModel -SqlInstance . | Where-Object {$_.ActualRecoveryModel -ne "FULL"}
 
        Only shows the databases that are in 'pseudo-simple' mode.
 
    .EXAMPLE
        Test-DbaFullRecoveryModel -SqlInstance sql2008 | Sort-Object Server, ActualRecoveryModel -Descending
 
        Shows all databases which actual configured recovery model is FULL and says if they are really in FULL recovery model or not. Will show in first place the ones that are in 'pseudo-simple' mode.
    #>

    [CmdletBinding()]
    [OutputType("System.Collections.ArrayList")]
    Param (
        [parameter(Mandatory = $true, ValueFromPipeline = $true)]
        [Alias("ServerInstance", "SqlServer")]
        [DbaInstanceParameter[]]$SqlInstance,
        [Alias("Databases")]
        [object[]]$Database,
        [object[]]$ExcludeDatabase,
        [PSCredential]
        $SqlCredential,
        [switch]$Detailed
    )

    begin {
        $collection = New-Object System.Collections.ArrayList
    }

    process {
        foreach ($servername in $SqlInstance) {
            try {
                $server = Connect-SqlInstance -SqlInstance $servername -SqlCredential $SqlCredential

                if ($server.versionMajor -lt 9) {
                    Write-Warning "This function does not support versions lower than SQL Server 2005 (v9). Skipping server '$servername'."
                    continue
                }

                $sqlRecoveryModel = "SELECT '$($server.Name)' AS 'Server'
                        , d.[name] AS [Database]
                        , d.recovery_model AS RecoveryModel
                        , d.recovery_model_desc AS RecoveryModelDesc
                        , CASE
                            WHEN d.recovery_model = 1 AND drs.last_log_backup_lsn IS NOT NULL THEN 1
                            ELSE 0
                           END AS IsReallyInFullRecoveryModel
                  FROM sys.databases AS D
                    INNER JOIN sys.database_recovery_status AS drs
                       ON D.database_id = drs.database_id
                  WHERE d.recovery_model = 1"


                if ($Database) {
                    $dblist = $Database -join "','"
                    $databasefilter += "AND d.[name] in ('$dblist')"
                }
                if ($ExcludeDatabase) {
                    $dblist = $ExcludeDatabase -join "','"
                    $databasefilter += "AND d.[name] NOT IN ('$dblist')"
                }

                $sql = "$sqlRecoveryModel $databasefilter"

                Write-Debug $sql

                $recoverymodel = $server.Databases['master'].ExecuteWithResults($sql)

                if ($recoverymodel.Tables[0].Rows.Count -eq 0) {
                    Write-Output "Server '$servername' does not have any databases in FULL recovery model."
                }
                else {
                    foreach ($recoverymodelrow in $recoverymodel.Tables[0]) {
                        if (!([bool]$recoverymodelrow.IsReallyInFullRecoveryModel)) {
                            $notes = "Database is still in SIMPLE recovery model until a full database backup is taken."
                            $ActualRecoveryModel = "pseudo-SIMPLE"
                        }
                        else {
                            $notes = $null
                            $ActualRecoveryModel = "FULL"
                        }

                        $null = $collection.Add([PSCustomObject]@{
                                Server                  = $recoverymodelrow.Server
                                Database                = $recoverymodelrow.Database
                                ConfiguredRecoveryModel = $recoverymodelrow.RecoveryModelDesc
                                ActualRecoveryModel     = $ActualRecoveryModel
                                Notes                   = $notes
                            })
                    }
                }
            }
            catch {
                throw $_
            }
        }
    }

    end {
        if ($Detailed) {
            return $collection
        }
        else {
            return ($collection | Select-Object * -ExcludeProperty notes)
        }
    }
}