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please donot be confuse In the same document it written
An INCREMENTAL backup at level 0 backs up all data blocks in datafiles being backed up. An incremental backup at level 0 is identical in content to a FULL backup,
but unlike a full backup the level 0 backup is a part of the incremental backup strategy.
A level 1 backup copies only changed blocks. A level 1 incremental backup is either differential or CUMULATIVE.
*If cumulative, RMAN backs up all blocks changed since the most recent level 0 backup.*
*If differential, RMAN backs up blocks updated since the most recent level 0 or level 1 incremental backup.*
arizuddin wrote:As already stated in the quoted docs, a cumulative incremental backup will backup all the blocks changed since the last level 0.
We have our level 0 on last friday and sat,sun,mon,tues,wed,thurs- level 1 backup. Next (then) friday, (for some reason, i cannot perform level 0) and i want to take cumulative, instead of incremental. Does it backup since last level 0 or thursday level 1?
I'd be addressing why "for some reason, i cannot perform level 0". What errors do you get?