what is the difference between..

Cumilative level 1 backup, cumulative level 2 backup, cumulative level 0 backup
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Geert GConnect With a Mentor Oracle dbaCommented:
level 0 backup is a full backup of the datafiles
level 1 backup is a backup of all the change since the last level 0 backup or the last level 1 backup

here is a full explanation of the different ways of cumulative backups

i've never heard of a level 2
dev_dbaAuthor Commented:
level1 backup under stood..
backup of till last transaction from the level 0 backup..
Geert GOracle dbaCommented:
well you can actually ask rman to backup from a certain point in time (scn) to a certain point in time
rman> backup incremental level 1 database from scn xxxx;

this backups the database from that change number
> handy if archivelogs get lost and you need to apply them on a standby
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