OCP question analysis _ 043: flashback logs

Analysis of OCP question _ 043: flashback logs to flash back to the database, oracle needs to record the before image of the data block to a new log. This log is named flashback database logs flash back log, and Flash Back log is always recycled, write www.2cto.com consecutively. When a data block is modified for the first time in an instance, the front-end process copies the before image of the data block to the flashback log buffer in the shared pool. The RVWR Process regularly refreshes the records in the flashback log buffer to the disk and can write related data in the DBWR process. before the dirty block is migrated to the disk, DBWR must ensure that the Flashback log buffer related to the buffer header (flashback Byte Address) has been written into the flash back log. This is called the "write first flash back log" mechanism www.2cto.com OCP question: [SQL] 12. You are working on an Oracle Database 10g database. You enabled t he Flashback Database feature. Which two statements regarding flashba ck logs are true? (Choose two .) a. flashback logs are not archived. b. flashback logs are maintained in redo log files. c. flashback logs are maintained in the Flash Recovery Area. d. flashback logs are used to maintain Flashback Database related errors. e. flashback logs need to be cleared manually after you disable Flashback Database. answer: A, C