A. DBWn B. RECO C. RVWR D. LGWR
A. STARTUP MOUNT EXCLUSIVE ALTER DATABASE FLASHBACK ON; ALTER DATABASE OPEN; B. STARTUP MOUNT ALTER DATABASE FLASHBACK ON; ALTER DATABASE OPEN RESETLOGS; C. STARTUP MOUNT EXCLUSIVE ATLER DATABASE ARCHIVELOG; ALTER DATABASE FLASHBACK ON; ALTER DATABASE OPEN RESETLOGS; D. STARTUP MOUNT ALTER DATABASE ARCHIVELOG; ALTER DATABASE FLASHBACK ON; ALTER DATABASE OPEN;
A. user managed complete recovery B. user managed incomplete recovery C. RMAN-based complete recovery D. RMAN-based incomplete recovery