Hi

We have a disk based backup solution that trickles changes over the internet to a remote backup server. The problem we are having is the amount of data change in the Undo Tablespaces. This in turn means large data being sent over the internet to the remote backup server.
Do we need to backup these undo table spaces (UNDOTBS1 datafiles) for a successful database recovery ? From what I read, these are UNDO table spaces that are a new addition to Oracle9i. Can I omit these files from daily backups and have it recreated when recovering the database ?Let me know your thoughts. Thanks !