In addition to implementing the Oracle suggested backup strategy described in "Using the Oracle Suggested Backup Strategy," you can use customized backup strategies that back up certain parts of your database. Customized strategies include backing up selected tablespaces, datafiles, and archived redo logs. Create a script that contains the commands required to implement your customized backup task and then schedule this backup task using the cron utility.
See Also:
Oracle Database Backup and Recovery User's Guide for information about performing customized backups