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ORA-00439: feature not enabled: Enterprise User Security (Doc ID 2985382.1)

Last updated on NOVEMBER 06, 2023

Applies to:

Oracle REST Data Services - Version 22.1 and later
Information in this document applies to any platform.


When attempting to call APEX URL after successful ORDS installation
the following error occurs.

The database user for the connection pool named |default|lo|, is not able to proxy to the schema named APEX_PUBLIC_USER. This could be a configured restriction on the maximum number of database sessions or an authorization failure

Caused by: java.sql.SQLException: ORA-00439: feature not enabled: Enterprise User Security

at oracle.jdbc.driver.T4CTTIoer11.processError(


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