V$IOFUNCMETRIC

V$IOFUNCMETRIC displays I/O statistics information by database function for the most recent time interval period.

Column Datatype Description
BEGIN_TIME DATE Begin time of the interval
END_TIME DATE End time of the interval
INTSIZE_CSEC NUMBER Interval size (in hundredths of a second)
FUNCTION_ID NUMBER Function ID
FUNCTION_NAME VARCHAR2(18) Function name
SMALL_READ_MBPS NUMBER Single block megabytes read per second
SMALL_WRITE_MBPS NUMBER Single block megabytes written per second
LARGE_READ_MBPS NUMBER Multiblock megabytes read per second
LARGE_WRITE_MBPS NUMBER Multiblock megabytes written per second
SMALL_READ_IOPS NUMBER Single block read requests per second
SMALL_WRITE_IOPS NUMBER Single block write requests per second
LARGE_READ_IOPS NUMBER Multiblock read requests per second
LARGE_WRITE_IOPS NUMBER Multiblock write requests per second
AVG_WAIT_TIME NUMBER Average wait time (in milliseconds)
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