Fix DMPDIR path detection and add VM302 testing documentation

- New-OracleDirectory now checks if DMPDIR exists with wrong path
- If path differs from target, drops and recreates the directory
- Fixes Oracle XE issue where DMPDIR defaults to D:\Oracle\admin\ORCL\dpdump
- Added VM302-TESTING.md with complete testing workflow documentation
- Includes Proxmox VM management commands, troubleshooting, and deployment steps

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

proxmox/lxc108-oracle/roa-windows-setup/scripts/lib/oracle-functions.ps1

@@ -697,6 +697,39 @@ function New-OracleDirectory {
         Write-Log "Created directory: $DirectoryPath"
     }
 
+    # Check if directory already exists with different path - if so, drop it first
+    # This fixes Oracle XE issue where DMPDIR may point to wrong default location
+    $checkSql = @"
+SET PAGESIZE 0 FEEDBACK OFF VERIFY OFF HEADING OFF ECHO OFF LINESIZE 500
+SELECT directory_path FROM dba_directories WHERE directory_name = '$DirectoryName';
+EXIT;
+"@
+
+    $existingPath = Invoke-SqlPlus -OracleHome $OracleHome -ServiceName $ServiceName `
+        -Username "SYS" -Password $Password -SqlCommand $checkSql -AsSysdba -Silent
+
+    $existingPath = ($existingPath -split "`n" | Where-Object { $_.Trim() -ne "" } | Select-Object -First 1)
+    if ($existingPath) {
+        $existingPath = $existingPath.Trim()
+    }
+
+    # Normalize paths for comparison (case-insensitive, handle trailing slashes)
+    $normalizedExisting = if ($existingPath) { $existingPath.TrimEnd('\').ToUpper() } else { "" }
+    $normalizedTarget = $DirectoryPath.TrimEnd('\').ToUpper()
+
+    if ($existingPath -and $normalizedExisting -ne $normalizedTarget) {
+        Write-Log "Directory $DirectoryName exists with different path: $existingPath"
+        Write-Log "Dropping and recreating with correct path: $DirectoryPath"
+
+        $dropSql = @"
+SET PAGESIZE 0 FEEDBACK OFF VERIFY OFF HEADING OFF ECHO OFF
+DROP DIRECTORY $DirectoryName;
+EXIT;
+"@
+        Invoke-SqlPlus -OracleHome $OracleHome -ServiceName $ServiceName `
+            -Username "SYS" -Password $Password -SqlCommand $dropSql -AsSysdba -Silent | Out-Null
+    }
+
     $sql = @"
 SET PAGESIZE 0 FEEDBACK OFF VERIFY OFF HEADING OFF ECHO OFF
 CREATE OR REPLACE DIRECTORY $DirectoryName AS '$DirectoryPath';