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Backup.LogTruncation Property

Gets or sets the method used to truncate the database log as part of the backup operation.

Namespace:  Microsoft.SqlServer.Management.Smo
Assembly:  Microsoft.SqlServer.SmoExtended (in Microsoft.SqlServer.SmoExtended.dll)

Public Property LogTruncation As BackupTruncateLogType 
Dim instance As Backup 
Dim value As BackupTruncateLogType 

value = instance.LogTruncation

instance.LogTruncation = value

Property Value

Type: Microsoft.SqlServer.Management.Smo.BackupTruncateLogType
A BackupTruncateLogType object value that specifies the log truncation option that has been selected. By default, the value is set to Truncate.

You can use the BackupTruncateLogType object to select one of the following log truncation options:

  • Truncate only. The log is truncated and is not backed up.

  • No truncate. The log is backed up and is not truncated.

  • Truncate (default). The log is backed up, and is then truncated.


'Connect to the local, default instance of SQL Server.
Dim srv As Server
srv = New Server
'Reference the AdventureWorks2012 database.
Dim db As Database
db = srv.Databases("AdventureWorks2012")
Dim bk As New Backup
bk.Action = BackupActionType.Database
bk.Database = "AdventureWorks2012"
bk.LogTruncation = BackupTruncateLogType.Truncate


$srv = new-Object Microsoft.SqlServer.Management.Smo.Server("(local)")
$db = New-Object Microsoft.SqlServer.Management.Smo.Database
$db = $srv.Databases.Item("AdventureWorks2012")
$bk = new-object Microsoft.SqlServer.Management.Smo.Backup
$bk.Action = [Microsoft.SqlServer.Management.Smo.BackupActionType]::Database
$bk.Database = "AdventureWorks2012"
$bk.LogTruncation = [Microsoft.SqlServer.Management.Smo.BackupTruncateLogType]::Truncate

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