Andrey, can you point to any documentation regarding levels 3 and 4? I can't seem to find any, and can't fathom what they are for. cheers. Alan.- On Thu, Mar 18, 2010 at 11:02 AM, andrey khudyakov < andrey.hudyakov@xxxxxxxxx> wrote: > Small clarification. > in fact, there are 5 levels of incremental backups. > 0 - is the base level, and 1-4 incremental levels > > 2010/3/18 Guillermo Alan Bort <cicciuxdba@xxxxxxxxx> > > According to Oracle Courseware (it's been a while, but I think I remember >> it right). There are Full Backups and Incremental Backups. Full Backups take >> the entire database, Incremental backups have different levels. >> Level 0 Incremental Backup: Takes the entire database (works just like a >> full backup, but is used for base point to level 1 and 2 incremental >> backups). >> Level 1 Incremental Backup: backs up all blocks changed after the most >> recent incremental backup at level 1 or 0 >> Level 2 Incremental Backup (differential): backs up all blocks changed >> after the most recent incremental backup at level 0 >> >> >> >> >