Best script to restore multiple databases with SQL Server 2012?

Question

I have to restore around 60 SQL databases of different sizes. I googled to find a script to restore all databases after each other , just picking it 1 by 1 from my folder. I was

Answer 1

The following Powershell script worked best for me.

Source: Simon Osborne's SQL Blog

$backupRoot = Get-ChildItem -Path "D:\BAK_FILE_FOLDER"
$datafilesDest = "D:\DATA_FILE_FOLDER"
$logfilesDest = "D:\LOG_FILE_FOLDER"
$server = "server\inst" 

## For each folder in the backup root directory...
#
foreach($folder in $backupRoot)
{   
    # Get the most recent .bak files for all databases...
    $backupFiles = Get-ChildItem -Path $folder.FullName -Filter "*.bak" -Recurse | Sort-Object -Property CreationTime -Descending | Select-Object -First 1


    # For each .bak file...
    foreach ($backupFile in $backupFiles)
    {
        # Restore the header to get the database name...
        $query = "RESTORE HEADERONLY FROM DISK = N'"+$backupFile.FullName+"'"
        $headerInfo = Invoke-Sqlcmd -ServerInstance $server -Query $query
        $databaseName = $headerInfo.DatabaseName

        # Restore the file list to get the logical filenames of the database files...
        $query = "RESTORE FILELISTONLY FROM DISK = N'"+$backupFile.FullName+"'"
        $files = Invoke-Sqlcmd -ServerInstance $server -Query $query

        # Differentiate data files from log files...
        $dataFile = $files | Where-Object -Property Type -EQ "D"
        $logFile = $files | Where-Object -Property Type -EQ "L"

        # Set some variables...
        $dataFileName = $dataFile.LogicalName
        $logFileName = $logFile.LogicalName

        # Set the destination of the restored files...
        $dataFileFullPath = $datafilesDest+"\"+$dataFileName+".mdf"
        $logFileFullPath = $logfilesDest+"\"+$logFileName+".ldf"

        # Create some "Relocate" file objects to pass to the Restore-SqlDatabase cmdlet...
        $RelocateData = New-Object 'Microsoft.SqlServer.Management.Smo.RelocateFile, Microsoft.SqlServer.SmoExtended, Version=12.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91' -ArgumentList $dataFileName, $dataFileFullPath
        $RelocateLog = New-Object 'Microsoft.SqlServer.Management.Smo.RelocateFile, Microsoft.SqlServer.SmoExtended, Version=12.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91' -ArgumentList $logFileName, $logFileFullPath

        # Perform the database restore... and then go around the loop.
        Restore-SqlDatabase -ServerInstance $server -Database $databaseName -BackupFile $backupFile.FullName -RelocateFile @($RelocateData,$RelocateLog) -ReplaceDatabase
    }
}