Which two are true about RMAN duplexed backup sets? (Choose two.)
Which two are true about RMAN duplexed backup sets? (Choose two.)
RMAN (Recovery Manager) allows the creation of duplexed backup sets under certain conditions. A non-duplexed backup set written to disk can be duplexed to disk by backing up the backup set that is already on disk, which ensures redundancy. Additionally, a non-duplexed backup set written to disk can be duplexed to tape by backing up the backup set that is already on disk, which helps in creating multiple copies for enhanced data safety. These capabilities help in providing more flexibility and security in backup and recovery operations.
I think B D -> https://docs.oracle.com/cd/E18283_01/backup.112/e10642/rcmbckad.htm#i1006180
"You cannot back up from tape to tape or from tape to disk: only from disk to disk or disk to tape." https://docs.oracle.com/en/database/oracle/oracle-database/19/rcmrf/BACKUP.html#GUID-73642FF2-43C5-48B2-9969-99001C52EB50
Agreed BD
I think B D https://web.stanford.edu/dept/itss/docs/oracle/10gR2/backup.102/b14191/rcmconc1003.htm#:~:text=Backups%20of%20Backup%20Sets&text=Only%20backup%20sets%20that%20were,run%20BACKUP%20AS%20COPY%20BACKUPSET%20. Backups of Backup Sets The RMAN BACKUP BACKUPSET command backs up previously created backup sets. Only backup sets that were created on device type DISK can be backed up using RMAN. They can be backed up to any available device type.
B, D https://docs.oracle.com/cd/E18283_01/backup.112/e10642/rcmcncpt.htm#:~:text=The%20RMAN%20BACKUP%20BACKUPSET%20command,of%20the%20same%20backup%20set.
I think B, C are correct, at least according to the provided explaination from Oracle: If your local backup uses a disk channel and want to Duplex to Cloud, Cloud backup uses and SBT channel. The same backup can not be duplexed to mixed kind of channels, see below. Duplexing Backup Sets RMAN can duplex backups to either disk or tape, but cannot duplex backups to tape and disk simultaneously.
B D -> You cannot back up from tape to tape or from tape to disk
F option is not there in actual exam.
D seems to be right, which is the other one that is right?
B & D are correct
disk to disk, tape to tape BC
BACKUP COPIES command work tape to tape or disk to disk
Backups cannot be duplexed on tape/disk combination.
The RMAN BACKUP BACKUPSET command allows you to do both, 1) Disk backup set to TAPE, 2) Disk Backup set to DISK. B. non-duplexed backup set written to disk can be duplexed to disk by backing up the backup set that is already on disk. D. A non-duplexed backup set written to disk can be duplexed to tape by backing up the backup set that is already on disk