官方文档B14194-03 Backup and Recovery Reference描述
FULL
Creates a backup of all blocks of datafiles included in the backup. FULL is the opposite of
INCREMENTAL.
RMAN makes full backups by default if neither FULL nor INCREMENTAL is specified.
A full backup has no effect on subsequent incremental backups, and is not considered a part of any
RMAN makes full backups by default if neither FULL nor INCREMENTAL is specified.
A full backup has no effect on subsequent incremental backups, and is not considered a part of any
incremental backup strategy (though a full image copy backup can be incrementally updated by applying
incremental backups with the RECOVER command).
INCREMENTAL LEVEL [=]integer
Copies only those data blocks that have changed since the last incremental integer backup, where
Copies only those data blocks that have changed since the last incremental integer backup, where
integer is 0 or 1. An incremental backup at level 0 backs up all data blocks in datafiles being backed
up. An incremental backup at level 1 backs up only changed blocks. An incremental backup can be either differential or
cumulative.In a cumulative level 1 incremental backup, RMAN backs up all blocks changed since the most
recent level 0 backup. In a differential level 1 incremental backup, RMAN backs up blocks updated since the last level 0 or level 1 incremental backup. Incremental backups at level 0 can be either backup sets or image copies.
Incremental backups at level 1 can only be backup sets. A level 0 backup must exist as the base
backup for an incremental strategy.
An incremental backup at level 0 is identical in content to a full backup, but
unlike a full backup the level 0 backup is considered a part of the incremental
strategy. If no level 0 backup exists when you run a level 1 backup, then
RMAN makes a level 0 backup automatically.
unlike a full backup the level 0 backup is considered a part of the incremental
strategy. If no level 0 backup exists when you run a level 1 backup, then
RMAN makes a level 0 backup automatically.
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