V$SYSSTAT

V$SYSSTAT displays system statistics. To find the name of the statistic associated with each statistic number (STATISTIC#), query the V$STATNAME view.

Column	Datatype	Description
`STATISTIC#`	`NUMBER`	Statistic number Note: Statistics numbers are not guaranteed to remain constant from one release to another. Therefore, you should rely on the statistics name rather than its number in your applications.
`NAME`	`VARCHAR2(64)`	Statistic name. You can get a complete listing of statistic names by querying the `V$STATNAME` view.
`CLASS`	`NUMBER`	A number representing one or more statistics class. The following class numbers are additive: `1` - User `2` - Redo `4` - Enqueue `8` - Cache `16` - OS `32` - Real Application Clusters `64` - SQL `128` - Debug
`VALUE`	`NUMBER`	Statistic value
`STAT_ID`	`NUMBER`	Identifier of the statistic
`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

Note:

This view returns instance-wide data and a value of 0 in the CON_ID column when queried from the root of a CDB.