Question

我有一个Powershell函数，它从SqlPs模块调用“Restore-SqlDatabase”，并通过splatting将参数发送到函数。我试图弄清楚为什么它不像我期望的那样工作。这是我的代码：

$SqlParams = @{"ServerInstance"="'$ServerName'";
    "Database"="'$DatabaseName'";
    "BackupFile"="'$BackupFile'";}

if($Credential -ne $null) {
    $SqlParams.Add("SqlCredential", $Credential)
}

if($ReplaceDatabase) {
    $SqlParams.Add("ReplaceDatabase", $null)
}

try { $PathResult = Test-Path -Path $RestorePath } catch { $PathResult = $False }

if($PathResult) {
    Write-Verbose "RestorePath exists, using: $RestorePath"

    $RelocateData = New-Object 'Microsoft.SqlServer.Management.Smo.RelocateFile, Microsoft.SqlServer.SmoExtended, Version=11.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91'
    $RelocateData.LogicalFileName = $DatabaseName
    $RelocateData.PhysicalFileName = $(Join-Path -Path $RestorePath -ChildPath "$DatabaseName.mdf")

    $RelocateLog = New-Object 'Microsoft.SqlServer.Management.Smo.RelocateFile, Microsoft.SqlServer.SmoExtended, Version=11.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91'
    $RelocateLog.LogicalFileName = "$DatabaseName`_log"
    $RelocateLog.PhysicalFileName = $(Join-Path -Path $RestorePath -ChildPath "$DatabaseName`_log.ldf")

    $RelocateFile = @($RelocateData,$RelocateLog)
    $SqlParams.Add("RelocateFile", $RelocateFile)
}

try{
    Write-Verbose "Using the following parameters:"
    $paramString = $SqlParams | Out-String
    Write-Verbose $paramString 
    Restore-SqlDatabase @SqlParams
} catch { 
    Write-Error $_ 
    Write-Output "Restore failed..."
    return
}
Write-Output "Database successfully restored!"

当我运行它时，它无法连接到数据库。然而，当我直接在终端中运行命令时，使用“param”哈希表和相同的参数值，它完全按预期工作。

给我的任何提示？

Answer 1

这是一些秘密的酱汁。

在Restore-SqlDatabase来电之前做了这个：

SQLCMD -S $ServerName -d master -Q "Alter Database [$DatabaseName] SET SINGLE_USER With ROLLBACK IMMEDIATE"

在Restore-SqlDatabase电话之后做了这个：

SQLCMD -S $ServerName -d master -Q "Alter Database [$DatabaseName] SET MULTI_USER WITH ROLLBACK IMMEDIATE"

现在一切似乎都很好。

调用powershell函数，通过splatting发送参数

1 个答案: