1 About These Release Notes

These release notes contain important information not included in the Oracle APEX documentation.

1.1 Before You Begin

Review the following to ensure your readiness for this version of Oracle APEX.

1.1.1 Oracle Database Requirements

Oracle APEX release 23.1 requires an Oracle Database release 19c or later. APEX runs on all database editions, including Enterprise Edition (EE), Standard Edition (SE) and Database 23c Free. APEX can be installed in single-instance database and in Oracle Real Application Clusters (Oracle RAC) database.

See Also:

Oracle APEX Installation Requirements in Oracle APEX Installation Guide

1.1.2 Browser Requirements

Oracle APEX requires a JavaScript-enabled browser and supports the current and prior major release of Google Chrome, Mozilla Firefox, Apple Safari, and Microsoft Edge.

1.1.3 Web Server Requirements

Oracle APEX requires Oracle REST Data Services (ORDS) 20.x or later.

Oracle REST Data Services (ORDS) is Java-based web server. Oracle REST Data Services features the ability to emit RESTful web services, offers improved file upload capability, and is certified with Oracle WebLogic Server and Apache Tomcat.


APEX-based REST Services were desupported in release 22.1. Oracle REST Data Services (ORDS) release 21.4.2 now ships with migration scripts that enable you to upgrade any remaining APEX-based REST Services to ORDS-based Services. To learn more, see Migration of Oracle APEX RESTful Service Modules in Oracle REST Data Services Release Notes.

1.1.4 About Release Numbering Conventions

New releases of Oracle APEX correlate to the calendar year.

In 2018 and starting with release 18.1 and 18.2, APEX introduced correlating the release number to the calendar year.

In addition, APEX now only offers full releases and no longer provides patch set releases (such as 5.1.1). Eliminating patch set releases reduces downtime when updating existing installations. APEX architecture also enables developers to revert releases if necessary.

Patch set exceptions (PSEs) may still be delivered for major defects. To learn more about PSEs, visit the Oracle APEX 23.1 Known Issues page or the Prior Release Archives for earlier releases.

1.1.5 About Checking for the Most Current Release

Oracle APEX is released more frequently than the Oracle Database. To view information about or download a more current release, see:


1.1.6 About Upgrading to the Latest Oracle APEX Release

If you already have Oracle APEX installed, Oracle strongly recommends that you regularly upgrade to the latest version available.

To learn more, see Upgrading from a Previous Oracle APEX Release in the Oracle APEX Installation Guide.

1.1.7 About Determining Your Release Version

To determine which release of Oracle APEX you are currently running, do one of the following:

  • View the release number on the Workspace home page:
    • Sign in to APEX.

      The Workspace home page appears. The current release version displays in the bottom right corner.

  • View the About APEX page:
    1. Sign in to APEX.

      The Workspace home page appears.

    2. Click the Help menu at the top of the page and select About.

      The About APEX page appears.

See Also:

About Accessing Your Development Environment in Oracle APEX App Builder User’s Guide