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There's really a couple of ways to do it.
If you are looking for a logical backup, you can use import/export with incremental exports. You start with a full backup and then do incrementals whenever you want. However, you must remember that import/export are real tempermental for the purposes of backup.
You could also run your database in archivelog mode and restore to a particular point in time. The tradeoff here is that you must have adequate disk space for your archivelogs.
The last way is to use a third party backup product. Oracle RMAN can do database block level incremental backups and Veritas NetBackup can do OS level incremental backups (provided you are running vxfs.)
Jeff Hunter
Enterprise DBA
Received on Sun Aug 15 1999 - 22:07:06 CDT