When thinking about high availability (HA) for their database, people routinely think about protection from instance failures, node failures, and even more disastrous events such as data center failures. However, one category of "failures" that is equally disastrous but commonly overlooked are "logical corruptions", a.k.a. application or human errors. Flashback can help solving this.
This article provides an overview of the Incremental Merge feature of the Oracle Database, including it's intended usage, use of the feature by 3rd party products, and and how Oracle addresses those same use-cases as part of the Maximum Availability Architecture.