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

  • 256 - Instance level

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.

See Also: “V$STATNAME” and “Statistics Descriptions”