functions/Set-DbaDatabaseOwner.ps1
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function Set-DbaDatabaseOwner { <# .SYNOPSIS Sets database owners with a desired login if databases do not match that owner. .DESCRIPTION This function will alter database ownership to match a specified login if their current owner does not match the target login. By default, the target login will be 'sa', but the function will allow the user to specify a different login for ownership. The user can also apply this to all databases or only to a select list of databases (passed as either a comma separated list or a string array). Best Practice reference: http://weblogs.sqlteam.com/dang/archive/2008/01/13/Database-Owner-Troubles.aspx .PARAMETER SqlInstance Specifies the SQL Server instance(s) to scan. .PARAMETER SqlCredential Allows you to login to servers using SQL Logins instead of Windows Authentication (AKA Integrated or 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 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 WhatIf If this switch is enabled, no actions are performed but informational messages will be displayed that explain what would happen if the command were to run. .PARAMETER Confirm If this switch is enabled, you will be prompted for confirmation before executing any operations that change state. .PARAMETER Silent If this switch is enabled, the internal messaging functions will be silenced. .NOTES Tags: Author: Michael Fal (@Mike_Fal), http://mikefal.net 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/Set-DbaDatabaseOwner .EXAMPLE Set-DbaDatabaseOwner -SqlInstance localhost Sets database owner to 'sa' on all databases where the owner does not match 'sa'. .EXAMPLE Set-DbaDatabaseOwner -SqlInstance localhost -TargetLogin DOMAIN\account Sets the database owner to DOMAIN\account on all databases where the owner does not match DOMAIN\account. .EXAMPLE Set-DbaDatabaseOwner -SqlInstance sqlserver -Database db1, db2 Sets database owner to 'sa' on the db1 and db2 databases if their current owner does not match 'sa'. #> [CmdletBinding(SupportsShouldProcess = $true)] Param ( [parameter(Mandatory = $true, ValueFromPipeline = $true)] [Alias("ServerInstance", "SqlServer")] [DbaInstanceParameter[]]$SqlInstance, [Alias("Credential")] [PSCredential]$SqlCredential, [Alias("Databases")] [object[]]$Database, [object[]]$ExcludeDatabase, [Alias("Login")] [string]$TargetLogin, [switch]$Silent ) process { foreach ($instance in $SqlInstance) { Write-Message -Level Verbose -Message "Connecting to $instance." try { $server = Connect-SqlInstance -SqlInstance $instance -SqlCredential $Credential } catch { Stop-Function -Message "Failure." -Category ConnectionError -ErrorRecord $_ -Target $instance -Continue } # dynamic sa name for orgs who have changed their sa name if (!$TargetLogin) { $TargetLogin = ($server.logins | Where-Object { $_.id -eq 1 }).Name } #Validate login if (($server.Logins.Name) -notcontains $TargetLogin) { Stop-Function -Message "$TargetLogin is not a valid login on $instance. Moving on." -Continue -Silent $Silent } #Owner cannot be a group $TargetLoginObject = $server.Logins | where-object {$PSItem.Name -eq $TargetLogin }| Select-Object -property Name, LoginType if ($TargetLoginObject.LoginType -eq 'WindowsGroup') { Stop-Function -Message "$TargetLogin is a group, therefore can't be set as owner. Moving on." -Continue -Silent $Silent } #Get database list. If value for -Database is passed, massage to make it a string array. #Otherwise, use all databases on the instance where owner not equal to -TargetLogin #use where owner and target login do not match #exclude system dbs $dbs = $server.Databases | Where-Object {$_.Owner -ne $TargetLogin -and @('master', 'model', 'msdb', 'tempdb', 'distribution') -notcontains $_.Name} #filter collection based on -Databases/-Exclude parameters if ($Database) { $dbs = $dbs | Where-Object { $Database -contains $_.Name } } if ($ExcludeDatabase) { $dbs = $dbs | Where-Object { $ExcludeDatabase -notcontains $_.Name } } Write-Message -Level Verbose -Message "Updating $($dbs.Count) database(s)." foreach ($db in $dbs) { $dbname = $db.name if ($PSCmdlet.ShouldProcess($instance, "Setting database owner for $dbname to $TargetLogin")) { try { Write-Message -Level Verbose -Message "Setting database owner for $dbname to $TargetLogin on $instance." # Set database owner to $TargetLogin (default 'sa') # Ownership validations checks #Database is online and accessible if ($db.Status -ne 'Normal') { Write-Message -Level Warning -Message "$dbname on $instance is in a $($db.Status) state and can not be altered. It will be skipped." } #Database is updatable, not read-only elseif ($db.IsUpdateable -eq $false) { Write-Message -Level Warning -Message "$dbname on $instance is not in an updateable state and can not be altered. It will be skipped." } #Is the login mapped as a user? Logins already mapped in the database can not be the owner elseif ($db.Users.name -contains $TargetLogin) { Write-Message -Level Warning -Message "$dbname on $instance has $TargetLogin as a mapped user. Mapped users can not be database owners." } else { $db.SetOwner($TargetLogin) [PSCustomObject]@{ ComputerName = $server.NetName InstanceName = $server.ServiceName SqlInstance = $server.DomainInstanceName Database = $db Owner = $TargetLogin } } } catch { Stop-Function -Message "Failure updating owner." -ErrorRecord $_ -Target $instance -Continue } } } } } } |