initial commit

Restore_DB_Keyvi.ps1

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+# =========================
+# Konfiguration
+# =========================
+$Server     = ".\KEYVI"
+$Mode       = "Test"   # "Test" oder "Production"
+$BackupFile = "D:\SQLBackup\DB_Keyvi\2026\07\DB_Keyvi_20260729_205555.bak"
+
+$ProdDb = "DB_Keyvi"
+$TestDb = "DB_Keyvi_RestoreTest"
+# =========================
+
+$ErrorActionPreference = "Stop"
+
+if ($Mode -notin @("Test","Production")) {
+    throw "Ungültiger Mode '$Mode'. Erlaubt: Test oder Production."
+}
+if (-not (Test-Path $BackupFile)) {
+    throw "Backup-Datei nicht gefunden: $BackupFile"
+}
+
+$TargetDb = if ($Mode -eq "Production") { $ProdDb } else { $TestDb }
+
+Write-Host "Modus: $Mode"
+Write-Host "Server: $Server"
+Write-Host "Ziel-Datenbank: $TargetDb"
+Write-Host "Backup-Datei: $BackupFile"
+
+if ($Mode -eq "Production") {
+    Write-Warning "PRODUCTION-MODUS: Datenbank [$ProdDb] wird überschrieben!"
+    $confirm = Read-Host "Tippe genau 'JA' zum Fortfahren"
+    if ($confirm -ne "JA") { throw "Abgebrochen durch Benutzer." }
+}
+
+# Alles in SQL erledigen (robust, kein Text-Parsing nötig)
+$sql = @"
+USE [master];
+
+DECLARE @BackupFile nvarchar(4000) = N'$BackupFile';
+DECLARE @TargetDb   sysname        = N'$TargetDb';
+
+DECLARE @DataPath nvarchar(4000) = CAST(SERVERPROPERTY('InstanceDefaultDataPath') AS nvarchar(4000));
+DECLARE @LogPath  nvarchar(4000) = CAST(SERVERPROPERTY('InstanceDefaultLogPath')  AS nvarchar(4000));
+
+IF @DataPath IS NULL OR @LogPath IS NULL
+BEGIN
+    RAISERROR(N'InstanceDefaultDataPath/LogPath konnte nicht ermittelt werden.',16,1);
+    RETURN;
+END
+
+DECLARE @filelist TABLE (
+    LogicalName           nvarchar(128),
+    PhysicalName          nvarchar(260),
+    [Type]                char(1),
+    FileGroupName         nvarchar(128),
+    [Size]                numeric(20,0),
+    MaxSize               numeric(20,0),
+    FileID                bigint,
+    CreateLSN             numeric(25,0),
+    DropLSN               numeric(25,0),
+    UniqueID              uniqueidentifier,
+    ReadOnlyLSN           numeric(25,0),
+    ReadWriteLSN          numeric(25,0),
+    BackupSizeInBytes     bigint,
+    SourceBlockSize       int,
+    FileGroupID           int,
+    LogGroupGUID          uniqueidentifier,
+    DifferentialBaseLSN   numeric(25,0),
+    DifferentialBaseGUID  uniqueidentifier,
+    IsReadOnly            bit,
+    IsPresent             bit,
+    TDEThumbprint         varbinary(32),
+    SnapshotURL           nvarchar(360)
+);
+
+DECLARE @sqlFileList nvarchar(max) =
+    N'RESTORE FILELISTONLY FROM DISK = N''' + REPLACE(@BackupFile,'''','''''') + N''';';
+
+INSERT INTO @filelist
+EXEC(@sqlFileList);
+
+DECLARE @DataLogical sysname = (SELECT TOP(1) LogicalName FROM @filelist WHERE [Type]='D' ORDER BY FileID);
+DECLARE @LogLogical  sysname = (SELECT TOP(1) LogicalName FROM @filelist WHERE [Type]='L' ORDER BY FileID);
+
+IF @DataLogical IS NULL OR @LogLogical IS NULL
+BEGIN
+    RAISERROR(N'Konnte logische Daten-/Log-Datei im Backup nicht finden.',16,1);
+    RETURN;
+END
+
+DECLARE @MdfTarget nvarchar(4000) = @DataPath + @TargetDb + N'.mdf';
+DECLARE @LdfTarget nvarchar(4000) = @LogPath  + @TargetDb + N'_log.ldf';
+
+IF DB_ID(@TargetDb) IS NOT NULL
+BEGIN
+    DECLARE @sqlSingle nvarchar(max) = N'ALTER DATABASE [' + @TargetDb + N'] SET SINGLE_USER WITH ROLLBACK IMMEDIATE;';
+    EXEC(@sqlSingle);
+END
+
+DECLARE @sqlRestore nvarchar(max) = N'
+RESTORE DATABASE [' + @TargetDb + N']
+FROM DISK = N''' + REPLACE(@BackupFile,'''','''''') + N'''
+WITH
+    MOVE N''' + REPLACE(@DataLogical,'''','''''') + N''' TO N''' + REPLACE(@MdfTarget,'''','''''') + N''',
+    MOVE N''' + REPLACE(@LogLogical, '''','''''') + N''' TO N''' + REPLACE(@LdfTarget, '''','''''') + N''',
+    REPLACE,
+    RECOVERY,
+    STATS = 10;';
+
+EXEC(@sqlRestore);
+
+DECLARE @sqlMulti nvarchar(max) = N'ALTER DATABASE [' + @TargetDb + N'] SET MULTI_USER;';
+EXEC(@sqlMulti);
+
+PRINT N'Restore erfolgreich: ' + @TargetDb;
+PRINT N'MDF: ' + @MdfTarget;
+PRINT N'LDF: ' + @LdfTarget;
+"@
+
+sqlcmd -S $Server -E -C -b -Q $sql
+if ($LASTEXITCODE -ne 0) {
+    throw "Restore fehlgeschlagen (ExitCode $LASTEXITCODE)."
+}
+
+Write-Host "Fertig." -ForegroundColor Green