The DBMS_SCHEDULER package provides a collection of scheduling functions and procedures that can be called from any PL/SQL program.
DBMS_SCHEDULER jobs that are created in the database when you install Oracle Application Express.The following table describes DBMS_SCHEDULER jobs that are created in the database when you install Oracle Application Express.
Table A-1 DBMS_SCHEDULER Jobs
| Job Name | Description | To Learn More | 
|---|---|---|
| 
 | Purges sessions older than 12 hours (the default). This job runs every hour. | |
| 
 | Sends mail that is in the mail queue every 5 minutes. | See "APEX_MAIL" in Oracle Application Express API Reference and "Configuring Email" | 
| 
 | Determines Websheet notifications that must be sent every 30 minutes. | See "About Websheet Applications" in Oracle Application Express App Builder User’s Guide | 
| 
 | Performs nightly maintenance, every day at 0100. This job archives the activity summary and runs the workspace purge process. | 
Parent topic: DBMS_SCHEDULER Jobs