ROMFASTSQL/oracle/standby-server-scripts/rman_restore_from_zero.ps1

# RMAN Restore Database FROM ZERO - Clean State (PowerShell)
# Backups are on F:\ (NFS mount from Proxmox host)
# Run as: Administrator
# Location: D:\oracle\scripts\rman_restore_from_zero.ps1

$ErrorActionPreference = "Continue"

$env:ORACLE_HOME = "C:\Users\Administrator\Downloads\WINDOWS.X64_193000_db_home"
$env:ORACLE_SID = "ROA"
$env:PATH = "$env:ORACLE_HOME\bin;$env:PATH"

Write-Host "============================================"
Write-Host "RMAN Database Restore FROM ZERO"
Write-Host "============================================"
Write-Host ""
Write-Host "Database:    ROA"
Write-Host "DBID:        1363569330"
Write-Host "Backups:     F:\ROA\autobackup (NFS mount from Proxmox)"
Write-Host ""
Write-Host "This script will:"
Write-Host "  1. CLEANUP: Delete any existing database files"
Write-Host "  2. RESTORE: Restore from F:\ backups"
Write-Host "  3. VERIFY: Check database is working"
Write-Host ""

# Verify F:\ mount is accessible
if (-not (Test-Path "F:\ROA\autobackup")) {
    Write-Host "ERROR: F:\ROA\autobackup not accessible!" -ForegroundColor Red
    Write-Host ""
    Write-Host "Please verify:"
    Write-Host "  1. F:\ drive is mounted: dir F:\"
    Write-Host "  2. NFS mount command: mount -o rw,nolock,mtype=hard,timeout=60 10.0.20.202:/mnt/pve/oracle-backups F:"
    Write-Host "  3. Proxmox host is reachable: ping 10.0.20.202"
    Write-Host ""
    exit 1
}

Write-Host "[OK] F:\ROA\autobackup is accessible"
Write-Host ""

# Create directories
New-Item -ItemType Directory -Path "D:\oracle\temp" -Force | Out-Null
New-Item -ItemType Directory -Path "D:\oracle\logs" -Force | Out-Null

Write-Host "============================================"
Write-Host "STEP 1: CLEANUP - Delete existing database"
Write-Host "============================================"
Write-Host ""
Write-Host "Calling cleanup_database.ps1..."
Write-Host ""

# Call cleanup script with /SILENT flag
& "D:\oracle\scripts\cleanup_database.ps1" /SILENT
if ($LASTEXITCODE -ne 0) {
    Write-Host ""
    Write-Host "ERROR: Cleanup failed!" -ForegroundColor Red
    exit 1
}

Write-Host ""
Write-Host "[OK] Cleanup complete - VM is in clean state"
Write-Host ""
Write-Host "Starting restore in 2 seconds..."
Start-Sleep -Seconds 2

Write-Host "============================================"
Write-Host "STEP 2: RESTORE - Restore from F:\ backups"
Write-Host "============================================"
Write-Host ""

# Step 2.1: Create Oracle service
Write-Host "[2.1] Creating Oracle service from PFILE..."
if (-not (Test-Path "C:\Users\oracle\admin\ROA\pfile\initROA.ora")) {
    Write-Host "ERROR: PFILE not found at C:\Users\oracle\admin\ROA\pfile\initROA.ora" -ForegroundColor Red
    Write-Host "Cannot create Oracle service without PFILE!"
    exit 1
}

& oradim -new -sid ROA -startmode auto -pfile "C:\Users\oracle\admin\ROA\pfile\initROA.ora" 2>&1 | Out-Null
if ($LASTEXITCODE -ne 0) {
    Write-Host "ERROR: Failed to create Oracle service" -ForegroundColor Red
    exit 1
}
Write-Host "[OK] Oracle service created successfully (AUTOMATIC startup)"
Start-Sleep -Seconds 2

# Step 2.2: Startup NOMOUNT
Write-Host "[2.2] Starting database in NOMOUNT mode..."
$nomountSQL = @"
STARTUP NOMOUNT PFILE='C:\Users\oracle\admin\ROA\pfile\initROA.ora';
EXIT;
"@

$nomountSQL | & sqlplus -S / as sysdba 2>&1 | Out-Null
if ($LASTEXITCODE -ne 0) {
    Write-Host "ERROR: Failed to startup NOMOUNT" -ForegroundColor Red
    exit 1
}
Write-Host "[OK] Database started in NOMOUNT mode"
Start-Sleep -Seconds 3

# Step 2.3: Copy backups and create RMAN script
Write-Host "[2.3] Preparing RMAN restore..."
$rmanScript = "D:\oracle\temp\restore_from_zero.rman"
$logFile = "D:\oracle\logs\restore_from_zero.log"

# Copy ALL backups from F:\ to recovery area
New-Item -ItemType Directory -Path "C:\Users\oracle\recovery_area\ROA\autobackup" -Force | Out-Null
Write-Host "[INFO] Copying all backups from F:\ROA\autobackup to recovery area..."
Write-Host "       This may take 1-2 minutes for ~10 GB of backups..."
Copy-Item "F:\ROA\autobackup\*.BKP" "C:\Users\oracle\recovery_area\ROA\autobackup\" -Force -ErrorAction Stop
if ($LASTEXITCODE -ne 0) {
    Write-Host "ERROR: Failed to copy backups from F:\" -ForegroundColor Red
    exit 1
}
Write-Host "[OK] All backups copied to recovery area"

# Create RMAN script
$rmanContent = @"
SET DBID 1363569330;

RUN {
    ALLOCATE CHANNEL ch1 DEVICE TYPE DISK;
    RESTORE CONTROLFILE FROM AUTOBACKUP;
    RELEASE CHANNEL ch1;
}

ALTER DATABASE MOUNT;

CATALOG START WITH 'F:/ROA/autobackup' NOPROMPT;

RUN {
    ALLOCATE CHANNEL ch1 DEVICE TYPE DISK;
    ALLOCATE CHANNEL ch2 DEVICE TYPE DISK;
    RESTORE DATABASE;
    RELEASE CHANNEL ch1;
    RELEASE CHANNEL ch2;
}

RUN {
    ALLOCATE CHANNEL ch1 DEVICE TYPE DISK;
    RECOVER DATABASE NOREDO;
    RELEASE CHANNEL ch1;
}

ALTER DATABASE OPEN RESETLOGS;

EXIT;
"@

$rmanContent | Out-File -FilePath $rmanScript -Encoding ASCII
Write-Host "[OK] RMAN script created: $rmanScript"

# Step 2.4: Run RMAN restore
Write-Host "[2.4] Running RMAN restore (this will take 10-20 minutes)..."
Write-Host "       Log file: $logFile"
Write-Host ""

& rman target / cmdfile=$rmanScript log=$logFile

if ($LASTEXITCODE -ne 0) {
    Write-Host ""
    Write-Host "ERROR: RMAN restore failed!" -ForegroundColor Red
    Write-Host "Check log: $logFile"
    exit 1
}

Write-Host ""
Write-Host "[OK] RMAN restore completed successfully!"
Write-Host ""

Write-Host "============================================"
Write-Host "STEP 3: VERIFY - Check database status"
Write-Host "============================================"
Write-Host ""
Write-Host "[3.1] Verifying database..."

$verifySQL = @"
SET PAGESIZE 100 LINESIZE 200
COLUMN info FORMAT A80
SELECT 'DB_NAME: ' || NAME || ', OPEN_MODE: ' || OPEN_MODE AS info FROM V`$DATABASE;
SELECT 'INSTANCE: ' || INSTANCE_NAME || ', STATUS: ' || STATUS AS info FROM V`$INSTANCE;
SELECT 'TABLESPACES: ' || COUNT(*) AS info FROM DBA_TABLESPACES;
SELECT 'DATAFILES: ' || COUNT(*) AS info FROM DBA_DATA_FILES;
SELECT 'TABLES: ' || COUNT(*) AS info FROM DBA_TABLES WHERE OWNER NOT IN ('SYS','SYSTEM');
EXIT;
"@

$verifySQL | & sqlplus -S / as sysdba

Write-Host ""
Write-Host "[3.2] Creating SPFILE for database persistence..."
$spfileSQL = @"
CREATE SPFILE FROM PFILE='C:\Users\oracle\admin\ROA\pfile\initROA.ora';
EXIT;
"@

$spfileSQL | & sqlplus -S / as sysdba 2>&1 | Out-Null
if ($LASTEXITCODE -ne 0) {
    Write-Host "WARNING: Failed to create SPFILE - database may not persist after connections close" -ForegroundColor Yellow
} else {
    Write-Host "[OK] SPFILE created successfully"

    # Recreate service with auto-start and SPFILE
    Write-Host "[3.3] Recreating Oracle service with auto-start mode..."
    & oradim -delete -sid ROA 2>&1 | Out-Null
    Start-Sleep -Seconds 2
    & oradim -new -sid ROA -startmode auto -spfile 2>&1 | Out-Null
    if ($LASTEXITCODE -ne 0) {
        Write-Host "WARNING: Failed to recreate service with auto-start" -ForegroundColor Yellow
    } else {
        Write-Host "[OK] Service recreated with auto-start mode"
    }

    # Register with listener and start it
    Write-Host "[3.4] Starting Oracle Listener..."
    
    # Set Listener service to AUTOMATIC and start it
    Set-Service -Name "OracleOraDB19Home1TNSListener" -StartupType Automatic -ErrorAction SilentlyContinue
    Start-Service -Name "OracleOraDB19Home1TNSListener" -ErrorAction SilentlyContinue
    
    if ((Get-Service -Name "OracleOraDB19Home1TNSListener" -ErrorAction SilentlyContinue).Status -eq "Running") {
        Write-Host "[OK] Listener started successfully"
    } else {
        Write-Host "WARNING: Failed to start Listener automatically, trying lsnrctl..." -ForegroundColor Yellow
        & lsnrctl start 2>&1 | Out-Null
    }
    
    Start-Sleep -Seconds 2
    
    # Register database with listener
    $registerSQL = @"
ALTER SYSTEM REGISTER;
EXIT;
"@
    $registerSQL | & sqlplus -S / as sysdba 2>&1 | Out-Null
    Write-Host "[OK] Database registered with Listener"
}

Write-Host ""
Write-Host "============================================"
Write-Host "Database Restore FROM ZERO Complete!"
Write-Host "============================================"
Write-Host ""
Write-Host "Restore log: $logFile"
Write-Host ""
Write-Host "Database is OPEN and ready for testing!" -ForegroundColor Green
Write-Host ""
Write-Host "Next steps:"
Write-Host "  1. Test application connectivity"
Write-Host "  2. Verify data integrity"
Write-Host "  3. Run cleanup_database.ps1 to remove database after test"
Write-Host "  4. Shutdown DR VM to conserve resources"
Write-Host ""

exit 0