V$FLASHFILESTAT

V$FLASHFILESTAT displays statistics about Database Smart Flash Cache.

By taking snapshots of SINGLEBLKRDS and SINGLEBLKRDTIM_MICRO, you can easily calculate the average latency of all the flash files in a given time period

Column	Datatype	Description
FLASHFILE#	NUMBER	The file number of the flash file
NAME	VARCHAR2(513)	Name and path of the flash file
BYTES	NUMBER	Size of the flash file, in bytes
ENABLED	NUMBER	Indicates whether this flash file is enabled or not
SINGLEBLKRDS	NUMBER	Number of reads to the flash file
SINGLEBLKRDTIM_MICRO	NUMBER	Cumulative latency of reading blocks from this particular flash file/device, in microseconds
CON_ID	NUMBER	The ID of the container to which the data pertains. Possible values include: 0: This value is used for rows containing data that pertain to the entire CDB. This value is also used for rows in non-CDBs. 1: This value is used for rows containing data that pertain to only the root n: Where n is the applicable container ID for the rows containing data

See Also: Oracle AI Database Administrator’s Guide for more information about configuring Database Smart Flash Cache