V$SYSMETRIC_SUMMARY

V$SYSMETRIC_SUMMARY displays a summary of all system Metric values for the long-duration system metrics. The average, maximum value, minimum value, and the value of one standard deviation for the last hour are displayed for each metric item.

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)
`GROUP_ID`	`NUMBER`	Metric group ID
`METRIC_ID`	`NUMBER`	Metric ID
`METRIC_NAME`	`VARCHAR2(64)`	Metric name
`NUM_INTERVAL`	`NUMBER`	Number of intervals observed
`MAXVAL`	`NUMBER`	Maximum value observed
`MINVAL`	`NUMBER`	Minimum value observed
`AVERAGE`	`NUMBER`	Average value over the period
`STANDARD_DEVIATION`	`NUMBER`	One standard deviation
`METRIC_UNIT`	`VARCHAR2(64)`	Metric unit description