Add Oracle DR standby server scripts and Proxmox troubleshooting docs

- Add comprehensive Oracle backup and DR strategy documentation
- Add RMAN backup scripts (full and incremental)
- Add PowerShell transfer scripts for DR site
- Add bash restore and verification scripts
- Reorganize Oracle documentation structure
- Add Proxmox troubleshooting guide for VM 201 HA errors and NFS storage issues

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

oracle/standby-server-scripts/02b_transfer_incremental_to_dr.ps1

@@ -0,0 +1,129 @@
+# Transfer Oracle INCREMENTAL Backup towards DR Server
+# Rulează după backup incremental (14:30)
+# Mai simplu decât scriptul full - doar transferă fișierele noi
+
+param(
+    [string]$SourceFRA = "C:\Users\Oracle\recovery_area\ROA",
+    [string]$DRHost = "10.0.20.37",
+    [string]$DRUser = "root",
+    [string]$DRPath = "/opt/oracle/backups/primary",
+    [string]$SSHKeyPath = "$env:USERPROFILE\.ssh\id_rsa",
+    [string]$LogFile = "D:\rman_backup\logs\transfer_incr_$(Get-Date -Format 'yyyyMMdd_HHmm').log"
+)
+
+$ErrorActionPreference = "Continue"
+
+function Write-Log {
+    param([string]$Message, [string]$Level = "INFO")
+    $timestamp = Get-Date -Format "yyyy-MM-dd HH:mm:ss"
+    $logLine = "[$timestamp] [$Level] $Message"
+    Write-Host $logLine
+    Add-Content -Path $LogFile -Value $logLine -Encoding UTF8 -ErrorAction SilentlyContinue
+}
+
+function Get-IncrementalBackups {
+    Write-Log "Searching for incremental backup files created in last 2 hours..."
+
+    $cutoffTime = (Get-Date).AddHours(-2)
+    $backupFiles = @()
+
+    # Caută în BACKUPSET, AUTOBACKUP
+    $searchPaths = @(
+        "$SourceFRA\BACKUPSET",
+        "$SourceFRA\AUTOBACKUP"
+    )
+
+    foreach ($path in $searchPaths) {
+        if (Test-Path $path) {
+            $files = Get-ChildItem -Path $path -Recurse -File -ErrorAction SilentlyContinue |
+                Where-Object {
+                    $_.LastWriteTime -gt $cutoffTime -and
+                    $_.Name -match '\.(BKP|bkp)$'
+                }
+            $backupFiles += $files
+        }
+    }
+
+    return $backupFiles
+}
+
+try {
+    Write-Log "========================================="
+    Write-Log "Oracle INCREMENTAL Backup Transfer Started"
+    Write-Log "========================================="
+    Write-Log "Source FRA: $SourceFRA"
+    Write-Log "DR Server: $DRHost"
+
+    # Test SSH connection
+    Write-Log "Testing SSH connection..."
+    $null = & ssh -n -i $SSHKeyPath -o StrictHostKeyChecking=no -o ConnectTimeout=10 "${DRUser}@${DRHost}" "exit 0" 2>&1
+    if ($LASTEXITCODE -ne 0) {
+        throw "SSH connection failed"
+    }
+    Write-Log "SSH connection OK" "SUCCESS"
+
+    # Găsește backup-uri incrementale
+    $backupFiles = Get-IncrementalBackups
+
+    if ($backupFiles.Count -eq 0) {
+        Write-Log "⚠️  No incremental backup files found (this might be normal if backup didn't run yet)" "WARNING"
+        exit 0
+    }
+
+    $totalSizeGB = ($backupFiles | Measure-Object -Property Length -Sum).Sum / 1GB
+    Write-Log "Found $($backupFiles.Count) incremental files, total size: $([math]::Round($totalSizeGB, 2)) GB"
+
+    # Transfer fișiere
+    Write-Log "Starting file transfer..."
+    $successCount = 0
+    $failCount = 0
+
+    foreach ($file in $backupFiles) {
+        $fileName = $file.Name
+        $fileSizeMB = [math]::Round($file.Length / 1MB, 2)
+
+        # Check dacă fișierul există deja pe DR (skip duplicates)
+        $checkCmd = "test -f $DRPath/$fileName && echo EXISTS || echo MISSING"
+        $checkResult = & ssh -n -i $SSHKeyPath "${DRUser}@${DRHost}" $checkCmd 2>&1
+
+        if ($checkResult -match "EXISTS") {
+            Write-Log "Skipping (already on DR): $fileName" "INFO"
+            $successCount++
+            continue
+        }
+
+        Write-Log "Transferring: $fileName ($fileSizeMB MB)"
+
+        # SCP optimized: no compression (already compressed), fast cipher
+        $null = & scp -i $SSHKeyPath -o StrictHostKeyChecking=no -o Compression=no -o Cipher=aes128-gcm@openssh.com `
+            $file.FullName `
+            "${DRUser}@${DRHost}:${DRPath}/$fileName" 2>&1
+
+        if ($LASTEXITCODE -eq 0) {
+            Write-Log "Transferred: $fileName" "SUCCESS"
+            $successCount++
+        } else {
+            Write-Log "Failed to transfer: $fileName" "ERROR"
+            $failCount++
+        }
+    }
+
+    Write-Log "========================================="
+    Write-Log "Transfer summary: $successCount succeeded, $failCount failed"
+
+    if ($failCount -gt 0) {
+        Write-Log "⚠️  Some transfers failed!" "WARNING"
+        exit 1
+    }
+
+    Write-Log "========================================="
+    Write-Log "INCREMENTAL Backup Transfer Completed Successfully"
+    Write-Log "========================================="
+    Write-Log "Files transferred: $successCount/$($backupFiles.Count)"
+
+    exit 0
+
+} catch {
+    Write-Log "CRITICAL ERROR: $($_.Exception.Message)" "ERROR"
+    exit 1
+}