1. create database (t1)
2. add data to database (t1)
3. register database (t1)
4. backup database (t1)
5. shutdown database immediate (t1)
6. make an OS cold backup using cp
7. startup database
8. backup database (t1) through rman
9. delete some files testing backup
10. realized that backup didn't contain all the files I needed for recovery.
11. shutdown abort (t1)
12. cp files from OS
13. startup database (t1). Database is now up, but RMAN doesn't know why the checkpoint number is so low. If I issue reset database, rman knows that the database hasn't been opened with resetlogs.
14. shutdown immediate (t1)
15. startup mount (t1)
16. recover database until cancel (t1)
17. cancel
18. open database resetlogs (t1). Since I issued resetlogs, I can now issue the reset database command.
19. use rman and issue reset database command