@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.