functions/Test-DbaDbOwner.ps1
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function Test-DbaDbOwner { <# .SYNOPSIS Checks database owners against a login to validate which databases do not match that owner. .DESCRIPTION This function will check all databases on an instance against a SQL login to validate if that login owns those databases or not. By default, the function will check against 'sa' for ownership, but the user can pass a specific login if they use something else. Best Practice reference: http://weblogs.sqlteam.com/dang/archive/2008/01/13/Database-Owner-Troubles.aspx .PARAMETER SqlInstance The target SQL Server instance or instances. .PARAMETER SqlCredential Login to the target instance using alternative credentials. Windows and SQL Authentication supported. Accepts credential objects (Get-Credential) .PARAMETER Database Specifies the database(s) to process. Options for this list are auto-populated from the server. If unspecified, all databases will be processed. .PARAMETER ExcludeDatabase Specifies the database(s) to exclude from processing. Options for this list are auto-populated from the server. .PARAMETER TargetLogin Specifies the login that you wish check for ownership. This defaults to 'sa' or the sysadmin name if sa was renamed. This must be a valid security principal which exists on the target server. .PARAMETER InputObject Enables piped input from Get-DbaDatabase. .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: Database, Owner, DbOwner Author: Michael Fal (@Mike_Fal), http://mikefal.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-DbaDbOwner .EXAMPLE PS C:\> Test-DbaDbOwner -SqlInstance localhost Returns all databases where the owner does not match 'sa'. .EXAMPLE PS C:\> Test-DbaDbOwner -SqlInstance localhost -TargetLogin 'DOMAIN\account' Returns all databases where the owner does not match 'DOMAIN\account'. .EXAMPLE PS C:\> Get-DbaDatabase -SqlInstance localhost -OnlyAccessible | Test-DbaDbOwner Gets only accessible databases and checks where the owner does not match 'sa'. #> [CmdletBinding()] param ( [parameter(Position = 0)] [DbaInstanceParameter[]]$SqlInstance, [PSCredential]$SqlCredential, [object[]]$Database, [object[]]$ExcludeDatabase, [string]$TargetLogin, [parameter(ValueFromPipeline)] [Microsoft.SqlServer.Management.Smo.Database[]]$InputObject, [Switch]$EnableException ) process { if (-not $InputObject -and -not $Sqlinstance) { Stop-Function -Message 'You must specify a $SqlInstance parameter' } if ($SqlInstance) { $InputObject += Get-DbaDatabase -SqlInstance $SqlInstance -SqlCredential $SqlCredential -Database $Database -ExcludeDatabase $ExcludeDatabase } #for each database, create custom object for return set. foreach ($db in $InputObject) { $server = $db.Parent # dynamic sa name for orgs who have changed their sa name if (Test-Bound -ParameterName TargetLogin -Not) { $TargetLogin = ($server.logins | Where-Object { $_.id -eq 1 }).Name } #Validate login if (($server.Logins.Name) -notmatch [Regex]::Escape($TargetLogin)) { Write-Message -Level Verbose -Message "$TargetLogin is not a login on $instance" -Target $instance } Write-Message -Level Verbose -Message "Checking $db" [pscustomobject]@{ ComputerName = $server.ComputerName InstanceName = $server.ServiceName SqlInstance = $server.DomainInstanceName Server = $server.DomainInstanceName Database = $db.Name DBState = $db.Status CurrentOwner = $db.Owner TargetOwner = $TargetLogin OwnerMatch = ($db.owner -eq $TargetLogin) } | Select-DefaultView -ExcludeProperty Server } } } |