Question: I know that the
dba_rsrc_io_calibrate view is used with the
dbms_resource_manager.calibrate_io view to display I/O
Can you show an example of using
Answer: The dba_rsrc_io_calibrate view
will store all three of the output parameters from the
See these important notes on
Plus the two input parameters, and a start_time and
end_time for multiple calibration runs:
- START_TIME: Start time of the most recent I/O
- END_TIME: End time of the most recent I/O
- MAX_IOPS: Maximum number of data block read requests
that can be sustained per second.
- MAX_MBPS: Maximum megabytes per second of
maximum-sized read requests that can be sustained.
- MAX_PMBPS: Maximum megabytes per second of
large I/O requests that can be sustained by a single
- LATENCY: Latency for data block read requests.
- NUM_PHYSICAL_DISKS The number of physical disks
set linesize 100
column time_start format a20
column time_end format a20
'dd-mon-yyy hh24:mi:ss') time_end,
num_physical_disks AS disks
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