7.205 V$EVENT_HISTOGRAM
V$EVENT_HISTOGRAM
displays a histogram of the number of waits, the maximum wait, and total wait time on an event basis, in milliseconds. The histogram has buckets of time intervals from < 1 ms, < 2 ms, < 4 ms, < 8 ms, ... < 221 ms, < 222 ms, and >= 222 ms.
The histogram will not be filled unless the TIMED_STATISTICS
initialization parameter is set to true
.
Column | Datatype | Description |
---|---|---|
|
|
Event number |
|
|
Name of the event |
|
|
Amount of time the bucket represents (in milliseconds). If the duration = |
|
|
Number of waits of the duration belonging to the bucket of the histogram |
|
|
Indicates the last time the bucket was updated (the ending timestamp of the last wait falling into the bucket's duration) |
|
|
The ID of the container to which the data pertains. Possible values include:
|
See Also: