Oradb admin work

- Create backup spfile by pfile
- Create backup controlfile by script(trace)
- Backup controlfile by rman.

Controlfile Administrator:
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+ duplicate controlfile
1. create pfile from spfile
2. shutdown db
3. copy controlfile to duplicate
4. edit pfile add entry to new controlfile(or delete in case lost of controlfile)
5. startup db with the pfile
6. create spfile from pfile...