Beginning Oracle Database 11g Administration From Novice to Professional

CHAPTER 13 RECOVERY 289
Figure 13-1. Using Enterprise Manager for user- directed recovery
Note that the Flashback Database technique depends on a special type of log file
called a flashback log. The retention of information in flashback logs is governed by the
Oracle parameter . Also, the database administrator must
explicitly enable logging by using the command before
opening the database.
LogMiner
You can also recover prior versions of data from the archived redo logs by using a utility
called LogMiner, as illustrated in Listing 13-2. LogMiner has the capability to construct
undo SQL that you can use to selectively reverse changes to your data.
Listing 13-2. Logical Recovery Using the LogMiner Utility