7.226 V$FS_OBSERVER_HISTOGRAM

V$FS_OBSERVER_HISTOGRAM displays statistics that are based on the frequency of successful pings between the observer and primary database for different time intervals.

These statistics can be used to select an appropriate value for the FastStartFailoverThreshold configuration property for your environment.

Column	Datatype	Description
`OBSERVER_NAME`^Foot 1	`VARCHAR2(513)`	The Fast-Start Failover observer name
`OBSERVER_HOST`^Footref 1	`VARCHAR2(513)`	The name of the host where this observer is running
`WAIT_TIME`	`NUMBER`	The time interval between a pair of successful observer pings (ping-pairs) to this instance. Note that the values in this column are the upper bound of the inter-ping interval samples represented by a given histogram bucket. If `WAIT_TIME` = number, then this column represents inter-ping intervals <= number that are not included in any smaller bucket.
`WAIT_COUNT`	`NUMBER`	The number of ping-pairs with an inter-ping interval that corresponds with this histogram bucket.
`LAST_UPDATE_TIME`	`VARCHAR2(20)`	The last time this row was updated
`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

^Footnote 1

This column is available starting with Oracle Database 12c Release 2 (12.2.0.1).