RMAN Incremental backups or Archive Log backups
I do a full RMAN backup each night, and hourly archive log backups every hour.
I've successfully recovered my production database to any point in time.
This way I know exactly which backups I need to do a restore - the previous nights backup, and the archive log backups to just after the point in tie I want to recover to.
However, I've met several other Oracle DBA's who have suggested to do RMAN Level 0, and then Level 1 cumultive and differentail backups. This I think is just added complictions, as i have to know which backup i need to restore my database from - essential for whne I refresh my test databases from production. (How do I knwo which files to copy to the test system for example...)