从提示运行PowerShell脚本时，SQL Server 2008不使用备份设备路径

Question

我制作了一个备份远程服务器的所有数据库的脚本。当我从PowerShell ISE接口运行脚本时，我在备份设备中确定的路径工作正常，但是当我从提示运行它时，忽略我设置的路径，并且备份到SQL Server的默认备份目录。为什么这是，我怎样才能解决它？ 以下是我的脚本：

$DestSqlTpb = "E:\BackupBD\SQL-TPB-01\";
$PastaRede = "\\sql-tpb1-01\BackupBD\SQL-TPB-01\";
Write-Output ("Started DELETE at: " + (Get-Date -format yyyy-MM-dd-HH:mm:ss));    
$ComandoDeleteRede = $PastaRede + "*"
remove-item $ComandoDeleteRede
$ComandoSqlTpbLocal = $DestSqlTpb + "*"
remove-item $ComandoSqlTpbLocal
Write-Output ("Finished DELETE at: " + (Get-Date -format yyyy-MM-dd-HH:mm:ss));    
[void][System.Reflection.Assembly]::LoadWithPartialName('Microsoft.SqlServer.ConnectionInfo');            
[void][System.Reflection.Assembly]::LoadWithPartialName('Microsoft.SqlServer.Management.Sdk.Sfc');            
[void][System.Reflection.Assembly]::LoadWithPartialName('Microsoft.SqlServer.SMO');
[void][System.Reflection.Assembly]::LoadWithPartialName('Microsoft.SqlServer.SMOExtended');  
$Server = "SQL-TPB1-01\SQL2008";     # SQL Server Instance.    
$srv = new-object ("Microsoft.SqlServer.Management.Smo.Server") $Server

Write-Output ("Started SQL-TPB1-01 at: " + (Get-Date -format yyyy-MM-dd-HH:mm:ss));
$dbs = $srv.Databases
foreach ($db in $dbs) 
{
  if (($db.Name -ne "tempdb") -and (!$db.IsDatabaseSnapshot)) #We don't want to backup the tempdb database 
  {
    $timestamp = Get-Date -format yyyy-MM-dd-HH-mm-ss;
    $backup = New-Object ("Microsoft.SqlServer.Management.Smo.Backup");            
    $backup.Action = "Database";            
    $backup.Database = $db.Name;            
    $backup.Devices.AddDevice($Dest + $db.Name + "_full_" + $timestamp + ".bak", "File");            
    $backup.BackupSetDescription = "Full backup of " + $db.Name + " " + $timestamp;            
    $backup.Incremental = 0;     
    $backup.CompressionOption = 1;
    # Starting full backup process.            
    $backup.SqlBackup($srv);     
    # For db with recovery mode <> simple: Log backup.            
    If ($db.RecoveryModel -ne 3)            
    {            
        $timestamp = Get-Date -format yyyy-MM-dd-HH-mm-ss;            
        $backup = New-Object ("Microsoft.SqlServer.Management.Smo.Backup");            
        $backup.Action = "Log";            
        $backup.Database = $db.Name;            
        $backup.Devices.AddDevice($Dest + $db.Name + "_log_" + $timestamp + ".trn", "File");            
        $backup.BackupSetDescription = "Log backup of " + $db.Name + " " + $timestamp;            
        #Specify that the log must be truncated after the backup is complete.            
        $backup.LogTruncation = "Truncate";
        # Starting log backup process            
        $backup.SqlBackup($srv);    
    };
  };
};
Write-Output ("Finished SQL-TPB1-01 at: " + (Get-Date -format yyyy-MM-dd-HH:mm:ss));
Write-Output ("Started COPY at: " + (Get-Date -format yyyy-MM-dd-HH:mm:ss));    
copy-item $ComandoDeleteRede $DestSqlTpb
Write-Output ("Finished COPY at: " + (Get-Date -format yyyy-MM-dd-HH:mm:ss));    

.

当我刚从ISE运行时，它进展顺利，但如果我保存PS1文件，并且从提示执行，则忽略设备中的路径。tks

Answer 1

我打赌问题是用这一行：

$backup.Devices.AddDevice($Dest + $db.Name + "_full_" + $timestamp + ".bak", "File"); 

.

您使用的是$ dest变量，不会在脚本中的任何位置定义。我打赌你把$ dest变量设置为在ISE会话中所需的路径，这就是它在那里工作的原因。

但在一个新的控制台窗口中，$ dest为null，因此sql使用默认路径。