THE FLASH RECOVERY AREA MUST BE CONFIGURED, AND FLASHBACK ENABLED WITHIN THE DATABASE

2. þ C and E. The flash recovery area must be configured, and flashback

enabled within the database.

ý A, B, and D. There is no such parameter as FLASHBACK_BUFFER_SIZE,

and the flashback logs are created automatically, so A and B are wrong.

Remember that flashback is an attribute of the database, not the instance, so

D is also wrong.