Backing Up Oracle - Computing at Cornell

To list the result of the register command, use the RMAN report schema
command:
6.3 Back up the database using TDP for Oracle and RMAN
When you execute the backup command, you create one or more backup
sets. A backup set, which is a logical construction, contains one or more
physical backup pieces. Backup pieces are operating system files that
contain the backed up datafiles, control files, or archived redo logs. You
cannot split a file across different backup sets or mix archived redo logs and
datafiles into a single backup set.
A backup set is a complete set of backup pieces that constitute a full or
incremental backup of the objects specified in the backup command. Backup
sets are in an RMAN-specific format; image copies, in contrast, are available
for use without additional processing.
Each backup piece contains control and checksum information that allows the
Oracle server process to validate the backup piece during a restore. A backup
set is created by the backup command. A restore command is required to
extract files from a backup set.
76 Backing Up Oracle using Tivoli Storage Management