使用smo和PowerShell将数据库备份还原到新数据库时出错

Question

从另一台服务器获取数据库备份我试图在localhost上恢复到sqlexpress.这个恢复将通过gui工作,但我有问题用PowerShell恢复它.我收到以下错误消息:

Exception calling "SqlRestore" with "1" argument(s): "Restore failed for Server
+ $smoRestore.SqlRestore <<<< ($server)
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : DotNetMethodException

错误消息指向此行的字符23:

        $smoRestore.SqlRestore($server)

脚本:

[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

Import-Module PSCX
Import-Module WebAdministration

function GetLatestItem(){
    param([string]$RemotePath)
    $returnString = Get-ChildItem $RemotePath -force -filter "*.7z" | sort @{expression={$_.LastWriteTime}; Descending=$true} | select Name -first 1
    return $returnString.Name
}

function DatabaseExists(){
    param([Microsoft.SqlServer.Management.Smo.Server]$server,[string]$databaseName)
    foreach($database in $server.Databases){
        if($database.Name -eq $databaseName){
            $true
        }
    }
    $false
}

$LocalFile = "C:\backups\backupname.bak.7z"
$LocalFilePath = "C:\backups\"   

Expand-Archive $Localfile $LocalFilePath    

# Most of the restore information was found at http://www.sqlmusings.com/2009/06/01/how-to-restore-sql-server-databases-using-smo-and-powershell/
$backupFile = $LocalFilePath + [IO.Path]::GetFileNameWithoutExtension($LocalFile)
[Microsoft.SqlServer.Management.Smo.Server]$server = New-Object ("Microsoft.SqlServer.Management.Smo.Server") ".\SQLEXPRESS"
$backupDevice = New-Object ("Microsoft.SqlServer.Management.Smo.BackupDeviceItem") ($backupFile, "File")
$smoRestore = New-Object Microsoft.SqlServer.Management.Smo.Restore

$smoRestore.NoRecovery = $true;
$smoREstore.ReplaceDatabase = $true;
$smoRestore.Action = "Database"
$smoRestore.PercentCompleteNotification = 10;
$smoRestore.Devices.Add($backupDevice)

# Get the details from the backup device for the database name and output that
$smoRestoreDetails = $smoRestore.ReadBackupHeader($server)
$databaseName = $smoRestoreDetails.Rows[0]["DatabaseName"]

"Database Name from Backup Header : " + $databaseName
$smoRestore.Database = $databaseName    

if(DatabaseExists $server $databaseName -not){
    $smoRestoreFile = New-Object("Microsoft.SqlServer.Management.Smo.RelocateFile")
    $smoRestoreLog = New-Object("Microsoft.SqlServer.Management.Smo.RelocateFile")
    $smoRestoreFile.LogicalFileName = $smoRestoreDetails.Rows[0]["DatabaseName"]
    $smoRestoreFile.PhysicalFileName = $server.Information.MasterDBPath + "\" + $smoRestore.Database + "_Data.mdf"
    $smoRestoreLog.LogicalFileName = $smoRestoreDetails.Rows[0]["DatabaseName"] + "_Log"
    $smoRestoreLog.PhysicalFileName = $server.Information.MasterDBPath + "\" + $smoRestore.Database + "_Log.ldf"
    $smoRestore.RelocateFiles.Add($smoRestoreFile)
    $smoRestore.RelocateFiles.Add($smoRestoreLog)
} 

$smoRestore.SqlRestore($server)
if($error.Count -eq 0){
}
else{
    $Error[0].exception.message
}

Answer 1

我有一个非常类似的脚本,有一些值得注意的差异:

• 在打电话之前SqlRestore,我打电话给$server.KillAllProcesses($databaseName).
• 我有$smoRestore.NoRecovery = $false,而不是$true
• 我有$smoRestore.FileNumber = 1,你根本没有.我认为这对应于从GUI中的备份集中检查文件.

我也有类似的设置逻辑/物理文件名的代码,但$server.Information我没有使用,我从注册表中提取信息(不确定哪个是"更好").另一个不同之处在于我用$smoRestore.ReadFileList而不是$smoRestore.ReadBackupHeader.

您也可以尝试Write-Host在路径上使用一些语句,以确保它们看起来正确,如果您还没有.

希望其中一个项目符号调整可以解决您的问题.如果您想从我的脚本中获取更多信息,请告诉我.