You have installed two 64G flash devices to support the Database Smart Flash Cache feature on your database server that is running on Oracle Linux. You have set the parameter: DB_FLASH_CACHE_FILE= `/dev/flash_device_1` ,`/dev/flash_device_2` How should the DB_FLASH_CACHE_SIZE be configured to use both devices? 

Answer options:

A. Set DB_FLASH_CACHE_SIZE = 64G.B. Set DB_FLASH_CACHE_SIZE = 64G, 64G
C. Set DB_FLASH_CACHE_SIZE = 128G.D. DB_FLASH_CACHE_SIZE is automatically configured by the instance at startup.

B

* Smart Flash Cache concept is not new in Oracle 12C - DB Smart Flash Cache in Oracle 11g. In this release Oracle has made changes related to both initialization parameters used by DB Smart Flash cache. Now you can define many files|devices and its sizes for "Database Smart Flash Cache" area. In previous releases only one file|device could be defined. DB_FLASH_CACHE_FILE = /dev/sda, /dev/sdb, /dev/sdc DB_FLASH_CACHE_SIZE = 32G, 32G, 64G So above settings defines 3 devices which will be in use by "DB Smart Flash Cache" /dev/sdasize 32G /dev/sdbsize 32G /dev/sdcsize 64G New view V$FLASHFILESTATits used to determine the cumulative latency and read counts of each file|device and compute the average latency