APEX Performance Issue After Database Upgrade to

(Doc ID 1950408.1)

Last updated on JANUARY 19, 2018

Applies to:

Oracle Database - Enterprise Edition - Version and later
Oracle Application Express (APEX) - Version 4.2 and later
Information in this document applies to any platform.


After upgrading the Oracle database to, APEX applications are experiencing performance problems. This issue affects all APEX applications and pages, including the login process. No changes have been made to the applications prior to the upgrade. 

This problem can occur with any web server:



 Upgraded the database from 11.2.0.x to


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