Oracle DR: Phase 6.5 - Complete cleanup and restore scripts (TESTING)

Major improvements to DR restore workflow:

**New Scripts:**
- cleanup_database.cmd: Complete cleanup using oradim + registry deletion
- rman_restore_from_zero.cmd: Copy backups to recovery_area + restore

**Key Solutions Implemented:**
1. RMAN AUTOBACKUP limitation: Must have backups in recovery_area
   - Solution: Copy ALL backups from F:\ (NFS) to C:\...\recovery_area
   - Performance: 6.7 GB copied in ~2 minutes

2. Oracle service persistence issue: Service remains after sc delete
   - Solution: Use oradim -delete -sid ROA (proper Oracle cleanup)
   - Bonus: Delete registry keys to ensure clean state

**Current Status:**
- Cleanup: ✅ TESTED (oradim works perfectly)
- Backup copy: ✅ TESTED (6.7 GB in 2 min)
- RMAN restore: 🟡 IN PROGRESS (expected completion 03:35-03:40)

**Updated:**
- DR_UPGRADE_TO_CUMULATIVE_PLAN.md: Progress tracking + solutions documented
- rman_restore_final.cmd: Use F:\ mount point

🤖 Generated with Claude Code

oracle/standby-server-scripts/cleanup_database.cmd

@@ -0,0 +1,102 @@
+@echo off
+REM Oracle Database Complete Cleanup Script
+REM Purpose: Remove all database files and services to restore DR VM to clean state
+REM Run as: Administrator
+REM Location: D:\oracle\scripts\cleanup_database.cmd
+
+set ORACLE_HOME=C:\Users\Administrator\Downloads\WINDOWS.X64_193000_db_home
+set ORACLE_SID=ROA
+set PATH=%ORACLE_HOME%\bin;%PATH%
+
+echo ============================================
+echo Oracle Database Cleanup Script
+echo ============================================
+echo.
+echo This script will:
+echo   1. Stop and delete Oracle service
+echo   2. Delete all database files (datafiles, control files, redo logs)
+echo   3. Delete local FRA (backups are on F:\, safe to delete)
+echo   4. Delete trace files
+echo   5. Leave VM in completely clean state (no service, no DB files)
+echo.
+echo WARNING: This will DELETE the entire database!
+echo Starting cleanup in 3 seconds... (Press Ctrl+C to cancel)
+timeout /t 3 /nobreak > nul
+
+REM Create temp directory
+if not exist D:\oracle\temp mkdir D:\oracle\temp
+if not exist D:\oracle\logs mkdir D:\oracle\logs
+
+echo.
+echo [1/6] Shutting down database (if running)...
+echo SHUTDOWN ABORT; > D:\oracle\temp\cleanup_shutdown.sql
+echo EXIT; >> D:\oracle\temp\cleanup_shutdown.sql
+sqlplus -s / as sysdba @D:\oracle\temp\cleanup_shutdown.sql > nul 2>&1
+timeout /t 3 /nobreak > nul
+
+echo [2/6] Stopping and deleting Oracle service + registry + instance...
+REM Method 1: Use oradim to delete Oracle instance (recommended)
+set ORACLE_HOME=C:\Users\Administrator\Downloads\WINDOWS.X64_193000_db_home
+set PATH=%ORACLE_HOME%\bin;%PATH%
+oradim -delete -sid ROA >nul 2>&1
+echo     Oracle instance deleted with oradim
+
+REM Method 2: Delete service directly (backup method)
+sc query OracleServiceROA > nul 2>&1
+if %errorlevel% equ 0 (
+    sc stop OracleServiceROA > nul 2>&1
+    timeout /t 2 /nobreak > nul
+    sc delete OracleServiceROA > nul 2>&1
+    echo     Oracle service deleted with sc
+)
+
+REM Method 3: Delete Oracle registry keys (ensures clean state)
+reg delete "HKLM\SOFTWARE\ORACLE\KEY_OraDB19Home1" /v ORA_ROA_PFILE /f >nul 2>&1
+reg delete "HKLM\SOFTWARE\ORACLE\KEY_OraDB19Home1" /v ORA_ROA_AUTOSTART /f >nul 2>&1
+reg delete "HKLM\SOFTWARE\ORACLE\KEY_OraDB19Home1" /v ORA_ROA_SHUTDOWN /f >nul 2>&1
+reg delete "HKLM\SOFTWARE\ORACLE\KEY_OraDB19Home1" /v ORA_ROA_SHUTDOWNTYPE /f >nul 2>&1
+reg delete "HKLM\SOFTWARE\ORACLE\KEY_OraDB19Home1" /v ORA_ROA_SHUTDOWN_TIMEOUT /f >nul 2>&1
+echo     Registry keys cleaned
+timeout /t 2 /nobreak > nul
+
+echo [3/6] Deleting database files...
+echo     Deleting datafiles...
+del /Q C:\Users\oracle\oradata\ROA\*.dbf 2>nul
+echo     Deleting control files...
+del /Q C:\Users\oracle\oradata\ROA\*.ctl 2>nul
+echo     Deleting redo logs...
+del /Q C:\Users\oracle\oradata\ROA\*.log 2>nul
+
+echo [4/6] Deleting local FRA (backups are on F:\)...
+if exist C:\Users\oracle\recovery_area\ROA (
+    rmdir /S /Q C:\Users\oracle\recovery_area\ROA 2>nul
+    mkdir C:\Users\oracle\recovery_area\ROA
+    echo     FRA cleared
+) else (
+    mkdir C:\Users\oracle\recovery_area\ROA 2>nul
+    echo     FRA directory created
+)
+
+echo [5/6] Deleting trace files (to save space)...
+del /Q C:\Users\oracle\diag\rdbms\roa\ROA\trace\*.trc 2>nul
+del /Q C:\Users\oracle\diag\rdbms\roa\ROA\trace\*.trm 2>nul
+echo     Trace files deleted
+
+echo.
+echo ============================================
+echo Database Cleanup Complete!
+echo ============================================
+echo.
+echo Current state:
+echo   [YES] Oracle software installed
+echo   [YES] PFILE exists (C:\Users\oracle\admin\ROA\pfile\initROA.ora)
+echo   [NO]  Oracle service (will be created during restore)
+echo   [NO]  Database files (will be restored from backups)
+echo   [NO]  Control files (will be restored from backups)
+echo   [NO]  Datafiles (will be restored from backups)
+echo.
+echo VM is now in COMPLETELY CLEAN STATE!
+echo.
+echo Next step: Run D:\oracle\scripts\rman_restore_from_zero.cmd
+echo   (It will create the Oracle service and restore the database)
+echo.