Incremental Backup builds on and enhances the current backup capability by saving only the changes since the previous incremental or full backup.
Incremental backups consume less storage and can be completed more quickly than full backups. A smaller backup window can also enable more frequent backups.
Log Archiving works in conjunction with backups to enable fine-grained point-in-time recovery. However, archives of logs take up quite a bit of storage. Now, with incremental backup, logs can automatically be purged in conjunction with incremental backups allowing for point-in-time recovery at a much lower cost. For example, when using daily incremental backups in conjunction with 24-hour log archive retention, a restore can be made to any point in the previous 24 hours.For more information, go to Incremental Backup documentation.