7.211 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