Reconstructing states using Flashback technology

Flashback technology can be considered a very important rescue layer. It has surely happened to you that you forgot the Where condition while defining the Update command, or you simply changed the data the wrong way. You might have wanted to delete archive data or move it to the data warehouse and you accidentally deleted the production data that is still needed. Yes, these could cause a huge problem, even up to the level of losing your job. Surely, even just reading this gives you chills, right?

In this section, we will show you that despite finding yourself in such complicated situations, there is still a way out without causing permanent data loss. We will deal with the Flashback technology at various precision levels. FLASHBACK DATABASE reverts the whole database to the required point. It requires the MOUNT mode of the database, so the database is not available during this operation. We will also discuss the techniques of how...