Could you please briefly explain?Its a requirement and it is similar to Database point-in time recovery and flashback database is faster than the conventional method.
Please, could you be more specific?
with point-in-time recovery we use redo to roll forward database in some moment in future.What do you do in case of point-in-time recovery?
How it used with flashback?
There is guaranteed restore point and flashback logs. I do flashback. Oracle get old images of blocks from flashback logs and apply it to datafiles, right?The blocks were used to reconstruct the data file contents. When you flashback database to a prior time, the blocks changed after target time will be restored from the flashback logs. then, it uses archive logs to reapply changes that were made after these blocks were written to flashback logs.
What exactly Oracle can requires from an archive log?
trying to understand the relation between archive logs and flashback logs.What are flashback logs? post URL where they are documented.