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/01_rman_backup_upgraded.txt

@@ -0,0 +1,19 @@
+RUN {
+    CONFIGURE RETENTION POLICY TO REDUNDANCY 2;
+    CONFIGURE CONTROLFILE AUTOBACKUP ON;
+    CONFIGURE COMPRESSION ALGORITHM 'BASIC';
+
+    # Full backup COMPRESSED + Archive logs (șterge logs după backup)
+    BACKUP AS COMPRESSED BACKUPSET
+        INCREMENTAL LEVEL 0
+        TAG 'DAILY_FULL_COMPRESSED'
+        DATABASE
+        PLUS ARCHIVELOG DELETE INPUT;
+
+    # Backup SPFILE și Control File
+    BACKUP AS COMPRESSED BACKUPSET SPFILE;
+    BACKUP CURRENT CONTROLFILE;
+
+    # Cleanup old backups (păstrează ultimele 2 - REDUNDANCY 2)
+    DELETE NOPROMPT OBSOLETE;
+}