Question

我试图在Power Shell上执行一个脚本，该脚本必须在一台Azure服务器上备份数据库，然后在另一台服务器（总是Azure）中恢复它。脚本出错2点：

当我针对现有数据库执行脚本时，它在恢复之前不会删除（或终止）数据库，即使存在应该执行此操作的过程。
当我针对新创建的数据库执行脚本时，我收到此错误：

powershell：使用“2”参数调用“ImportBacpac”的异常： “数据计划执行在线：1个字符：1 + powershell -ExecutionPolicy ByPass -File C：\ Untitled1.ps1 -noexit + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~ + CategoryInfo：NotSpecified :(异常calli ...计划执行：字符串）[]，RemoteException + FullyQualifiedErrorId：NativeCommandError因消息失败发生了一个或多个错误。“在C：\ Untitled1.ps1：48 char：5 + $ Services.ImportBacpac（$ Package，$ restoreToDatabaseName） + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~ + CategoryInfo：NotSpecified：（:) []，MethodInvocationException + FullyQualifiedErrorId：DataException

我使用的代码如下：

[string]$azureConnectionString = "Server=myserver.database.windows.net; User ID=myUser; Password=MyPWD; Trusted_Connection=False; Encrypt=True; Connection Timeout=30;"
[string]$azureDatabaseName = "SourceDb"
[string]$bacpacFileDropLocation = "path where to create the bacpac file"
[string]$restoreToServer = 'secondserver'
[string]$restoreToDatabaseName="DestinationDb"
[string]$restoreToConnectionString = "Server=secondserver.database.windows.net,1433; User ID=User; Password=Pwd; Trusted_Connection=False; Encrypt=True; Connection Timeout=30;"
[string]$SqlInstallationFolder = "C:\Program Files (x86)\Microsoft SQL Server"
Write-Host "Backing up Azure database '$azureDatabaseName' and restoring to database '$restoreToDatabaseName'"

$Watch = New-Object System.Diagnostics.StopWatch
$Watch.Start()
$DacAssembly = "$SqlInstallationFolder\120\DAC\bin\Microsoft.SqlServer.Dac.dll"
$smo= "C:\Program Files (x86)\Microsoft SQL Server\120\SDK\Assemblies\Microsoft.SqlServer.Smo.dll"
Add-Type -Path $DacAssembly
Add-Type -Path $smo
$Services = new-object Microsoft.SqlServer.Dac.DacServices $azureConnectionString

if ($Services -eq $null)
{ 
    Write-Host "Failed to load Sql Server Dac Services"
    exit
}

$Services.ExportBacpac($bacpacFileDropLocation, $azureDatabaseName)

if (test-path($bacpacFileDropLocation))
{      
    [System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SqlServer.SMO") | out-null
    $SMOserver = New-Object ('Microsoft.SqlServer.Management.Smo.Server') -argumentlist $restoreToServer
    Write-Host "$SMOserver.Databases[$restoreToDatabaseName]"
    Write-Host "$restoreToDatabaseName"
    if  ($SMOserver.Databases[$restoreToDatabaseName] -ne $null) 
    {  
       # $SMOserver.Databases[$restoreToDatabaseName].Drop()  
       $SMOserver.KillDatabase($restoreToDatabaseName)
   } 
    else {Write-Host "Database not dropped"
    }

    $Services = new-object Microsoft.SqlServer.Dac.DacServices $restoreToConnectionString
    Write-Host $Services
    if ($Services -eq $null)
    {
        exit
    }

    $Package =  [Microsoft.SqlServer.Dac.BacPackage]::Load($bacpacFileDropLocation)
    $Services.ImportBacpac($Package, $restoreToDatabaseName)
    $Package.Dispose()
    $Watch.Stop();
    Write-Host "Azure backup and local restore completed in "$Watch.Elapsed.ToString()
}
else
{
    Write-Host "Back up has failed!"
}

合乎逻辑的是，当我在新的Db上执行脚本时，会显示“Database not dropped”消息，但是当我针对现有Db执行它时它也会显示。也许y脚本有什么问题吗？我是新手，所以我更难调试这样的代码

数据执行计划在数据库恢复时出错

0 个答案: