Load the SMO Assemblies in Windows PowerShell

Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW)

This article describes how to load the SQL Server Management Object (SMO) assemblies in Windows PowerShell scripts that don't use the SQL Server PowerShell provider.


There are two SQL Server PowerShell modules; SqlServer and SQLPS.

The SqlServer module is the current PowerShell module to use.

The SQLPS module is included with the SQL Server installation (for backward compatibility) but is no longer updated.

The SqlServer module contains updated versions of the cmdlets in SQLPS and includes new cmdlets to support the latest SQL features.

Install the SqlServer module from the PowerShell Gallery.

For more information, see SQL Server PowerShell.

The preferred mechanism for loading the SMO assemblies is to load the SqlServer module. The SQL Server provider included in the module automatically loads the SMO assemblies, and also implements features that extend the usefulness of the SMO objects in PowerShell scripts.

There are two cases where you may need to load the SMO assemblies directly:

  • If your script references a SMO object before the first command that references the provider or cmdlets from the SQL Server snap-ins.

  • You want to port SMO code from another language, such as C# or Visual Basic, which doesn't use the provider or cmdlets.

Example: Loading the SQL Server Management Objects

The following code loads the SMO assemblies:

# Loads the SQL Server Management Objects (SMO)  

$ErrorActionPreference = "Stop"
if (Get-ChildItem $sqlpsreg -ErrorAction "SilentlyContinue")  
    throw "SQL Server Provider for Windows PowerShell is not installed."  
    $item = Get-ItemProperty $sqlpsreg  
    $sqlpsPath = [System.IO.Path]::GetDirectoryName($item.Path)  
$assemblylist =
"Microsoft.SqlServer.Dmf ",  
"Microsoft.SqlServer.Instapi ",  
"Microsoft.SqlServer.SqlWmiManagement ",  
"Microsoft.SqlServer.ConnectionInfo ",  
"Microsoft.SqlServer.SmoExtended ",  
"Microsoft.SqlServer.SqlTDiagM ",  
"Microsoft.SqlServer.SString ",  
"Microsoft.SqlServer.Management.RegisteredServers ",  
"Microsoft.SqlServer.Management.Sdk.Sfc ",  
"Microsoft.SqlServer.SqlEnum ",  
"Microsoft.SqlServer.RegSvrEnum ",  
"Microsoft.SqlServer.WmiEnum ",  
"Microsoft.SqlServer.ServiceBrokerEnum ",  
"Microsoft.SqlServer.ConnectionInfoExtended ",  
"Microsoft.SqlServer.Management.Collector ",  
foreach ($asm in $assemblylist)  
    $asm = [Reflection.Assembly]::LoadWithPartialName($asm)  
cd $sqlpsPath  
update-FormatData -prependpath SQLProvider.Format.ps1xml

See Also