Oracle RMAN ↔ DBUA: Evaluating Rollback Options After a Failed Upgrade
Goal: Identify the most suitable rollback strategy when Oracle Database Upgrade Assistant (DBUA) reports a failure during an upgrade, choosing between a Recovery Manager (RMAN) restore of a pre‑upgrade backup and a FLASHBACK DATABASE to a guaranteed restore point. Constraints and uncertainties: The RMAN path requires a recent consistent backup, ARCHIVELOG mo