Redo Log files,”Redo log files store the information from the log buffer. They’re written to by the Log Writer (LGWR). Again, you can’t read these binary files without the help of the database software. Redo log files don’t record select statements. If you forget what you selected
you’re just going to have to remember that on your own!Redo log files contain all the information necessary to recover lost data in your database. Every SQL statement that you issue changing data can be reconstructed by the information saved in these files.”