But everything should be done in a fitting and orderly way.1 Corinthians 14:40
Monitoring your scheduler jobs in APEX is not something new. There have been many discussions on how to implement this on various sites. Some of these sites have brilliant and straight forward approach. I encourage you all to visit them: Oracle Scheduled Job APEX Dashboard by Amanda Walsh and DBMS_SCHEDULER examples by Tobias Arnhold.
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You’re most likely to get this haunted error message when you are playing around with the page template in Oracle Application Express (APEX). This message seems straigtforward and solution is frankly not that difficult, but let’s dive in any way and understand what it means.
If you are running Oracle APEX that comes with Oracle XE installation, chances are that you are still making use of Embedded PL/SQL gateway, which essentially uses Oracle XML DB HTTP component. In reality this means that all your files are stored in the database itself.