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Incrementally Updated Image Copies...
Apply (merge) incremental backups into image copies
Reduce recovery time
- At most 24 hours of redo to apply if run daily
Reduce number of times image copies are taken
Notes:
The RMAN Incrementally Updated Backup feature is designed to limit the amount of redo you will need to apply during recovery operations – thus reduce recovery time.
The basic idea is to create image copies of your datafiles, then subsequently update the image copies with incremental backups, i.e. merge level 1 incremental backups into an existing image copy.