Expression Tracking Feature Cannot Be Turned Off By OPTIMIZER_FEATURES_ENABLE

(Doc ID 2340782.1)

Last updated on DECEMBER 18, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 12.2.0.1 and later
Information in this document applies to any platform.

Goal

According to Oracle Reference documentation, Expression Tracking feature is enabled only when OPTIMIZER_FEATURES_ENABLE parameter is set to 12.2.0.1.

https://docs.oracle.com/en/database/oracle/oracle-database/12.2/refrn/OPTIMIZER_FEATURES_ENABLE.html

However, setting OPTIMIZER_FEATURES_ENABLE=12.1.0.2 or 11.2.0.4 still collects expression tracking information into dba_expression_statistics.

 

 

Solution

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