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Expression Tracking Feature Cannot Be Turned Off By OPTIMIZER_FEATURES_ENABLE (Doc ID 2340782.1)

Last updated on MARCH 02, 2023

Applies to:

Oracle Database Exadata Express Cloud Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database - Enterprise Edition - Version and later
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.


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

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


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