Getting error while backing up SQL database using powershell

Question

I am trying to backup SQL database but strange thing is taking lpace, few databases i can backup with powershell but few i am getting error
    Exception calling "SqlBackup" with "1" argument(s): "Backup failed for Server 
    'Server1'. "
    At C:\_Scripts\defaultbackup.ps1:40 char:1
    + $smoBackup.SqlBackup($server)
    + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : FailedOperationException
    $dbToBackup = "test"
    #clear screen
    cls
    #load assemblies
    #note need to load SqlServer.SmoExtended to use SMO backup in SQL Server 2008
    #otherwise may get this error
    #Cannot find type [Microsoft.SqlServer.Management.Smo.Backup]: make sure
    #the assembly containing this type is loaded.
    [System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SqlServer.SMO") | Out-Null
    [System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SqlServer.SmoExtended") | 
    Out-Null
    [System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SqlServer.ConnectionInfo") 
    | Out-Null
    [System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SqlServer.SmoEnum") | Out-  
    Null
    #create a new server object
    $server = New-Object ("Microsoft.SqlServer.Management.Smo.Server") "(local)"
    $backupDirectory = $server.Settings.BackupDirectory
    "Default Backup Directory: " + $backupDirectory
    $db = $server.Databases[$dbToBackup]
     $dbName = $db.Name
     $timestamp = Get-Date -format yyyyMMddHHmmss
    $smoBackup = New-Object ("Microsoft.SqlServer.Management.Smo.Backup")
    #BackupActionType specifies the type of backup.
    #Options are Database, Files, Log
    #This belongs in Microsoft.SqlServer.SmoExtended assembly
    $smoBackup.Action = "Database"
    $smoBackup.BackupSetDescription = "Full Backup of " + $dbName
    $smoBackup.BackupSetName = $dbName + " Backup"
    $smoBackup.Database = $dbName
    $smoBackup.MediaDescription = "Disk"
    $smoBackup.Devices.AddDevice($backupDirectory + "\" + $dbName + "_" + $timestamp +   
    ".bak",   
    "File")
    $smoBackup.SqlBackup($server)
    #let's confirm, let's list list all backup files
    $directory = Get-ChildItem $backupDirectory
   $smoBackup.Devices.AddDevice($backupDirectory + "\" + $dbName + "_" + $timestamp + ".bak", "File")
$smoBackup.SqlBackup($server)
#let's confirm, let's list list all backup files
$directory = Get-ChildItem $backupDirectory
#list only files that end in .bak, assuming this is your convention for all backup files
    $backupFilesList = $directory | where {$_.extension -eq ".bak"}
    $backupFilesList | Format-Table Name, LastWriteTime
    $backupFilesList = $directory | where {$_.extension -eq ".bak"}
    $backupFilesList | Format-Table Name, LastWriteTime
I read on internet that by using this in the script this problem can be sorted but i am
not sure where exactly to put this line in above script set the ConnectionContext.StatementTimeout to 0
              

Answer 1

Hi Srk,
I found the similar issue in this article, which had been sovled by adding the script below:
$server = New-Object ("Microsoft.SqlServer.Management.Smo.Server") $dbInstance
$server.ConnectionContext.StatementTimeout = 0
Refer to:
Exception calling "SqlBackup" with "1" argument(s)
Please feel free to let me know if this method can not work.
Best Regards,
Anna Wang