Performing Oracle User-Managed Database Recoveries - OCP: Oracle Database 12c Administrator Certified Professional - page 103

17. What is the SCN?
A. The system change number, which represents a point in time relative to transactions
within a given database
B. A number that represents time. Thus, at 1300 hours, the SCN is the same on all
databases
C. The security change number, which represents the security code that is needed to
access any database structure
D. A conversion factor that converts internal database time to external clock time
E. UTC time in the database, providing a standardized way of tracking time in Oracle
18. You have lost data file 4 from your database, which is in ARCHIVELOG mode. Which
is typically the fastest way to restore your database?
A. Restore and recover the data file.
B. Restore and recover the tablespace.
C. Restore and recover the database.
D. Restore and recover the control file.
E. Restore and recover the parameter file.
19. You are trying to recover your database in ARCHIVELOG mode. During the recovery
process, you receive the following error:
ORA-00279: change 5033391 generated at 08/17/2013 06:37:40
needed for thread 1
ORA-00289: suggestion :
/oracle01/fast_recovery_area/ORCL/archivelog/2013_08_17
/o1_mf_1_11_%u_.arc
ORA-00280: change 5033391 for thread 1 is in sequence #11
ORA-00278: log file
'/oracle01/fast_recovery_area/ORCL/archivelog/2013_08_17
/o1_mf_1_10_4bj6wnqm_.arc' no longer needed for this recovery
Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
ORA-00308: cannot open archived log
'/oracle01/fast_recovery_area/ORCL/archivelog/2013_08_17
/o1_mf_1_11_%u_.arc'
ORA-27037: unable to obtain file status
Linux Error: 2: No such file or directory
Additional information: 3