RMAN!!!
1. What are RMAN backup pieces, backup sets and image copies?2. PROS n CONS of backup sets and image copies3. Can we run RMAN backup in noarchive log mode?4. Can we run RMAN backup in mount mode?5. Can we run RMAN backup standby database?6. What is BCT in RMAN and why we need that?7. Can we enable BCT in standby database?8. What is RMAN target database Vs RMAN auxiliary database?9. What is RMAN channel VS RMAN Auxiliary channel?10. Can I take a RMAN backup from Standby Database?11. Can I use RMAN Backup taken on standby to restore and recover my Primary Database?12. Can I enable BCT in Standby Database?13. What is RMAN channel Vs auxiliary channel?14. What is difference between "rman target /" and "rman auxiliary /"15. What is RMAN active database duplicate?16. What are pros and cons of RMAN active database duplicate Vs RMAN duplicate from backup?17. What are the RMAN optimization parameters?18. How you will improve your RMAN backup performance?19. What happens to running RMAN backup when you add new datafile or create new tablespace?20. What happens to running RMAN backup when you drop a datafile or a Tablespace?21. What happens to running RMAN backup when you move or rename a datafile?
Also,
1. Will RMAN backup TEMP and UNDO datafile?
2. Will RMAN backup offline datafile?
3. Will RMAN backup offline PDB's datafile while backing up from CDB?
4. What happens if we add datafiles while RMAN backup is running?
5. Can we clone PDB alone using RMAN duplicate into another CDB?
6. What is control file autobackup on? What all files are blacked up as part of this autobackup?
7. Can I use my L0 backup without archive log backup for restore / clone using RMAN duplicate?
8. Can I use my L0 backup without controlfile backup for restore / clone using RMAN duplicate?
9. What is the best practices to take control file backup before the DB backup or after the DB backup?