7.205 V$EXP_STATS

V$EXP_STATS stores the expression tracking statistics of recently executed queries.

Column	Datatype	Description
`EXPID`	`NUMBER`	Expression ID of the current expression
`OBJNUM`	`NUMBER`	The object number contained in the expression
`DYNCOST`	`NUMBER`	Optimizer dynamic cost of evaluating the expression
`EVALCNT`	`NUMBER`	Number of times the expression has been evaluated
`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 is available starting with Oracle Database 12c Release 2 (12.2.0.1).