Mozilla Firefox Extended Support Release (ESR) 140 is now certified as both a Windows-based client browser and macOS-based client browser for Oracle E-Business Suite (EBS) Release 12.2.
Firefox ESR 140 is certified for both Oracle E-Business Suite web-based (OA Framework/HTML) and Oracle Forms/Java-based interfaces provided the minimum requirements for 
deployment are met. For additional information refer to the following My Oracle Support knowledge documents:
- Recommended Browsers for Oracle E-Business Suite Releases 12.2 and 12.1 (MOSFS Article ID KA1220, Formerly MOS Note 389422.1)
- Oracle E-Business Suite Release Notes for macOS Clients, Release 12 (MOFS Article ID KA1220, Formerly MOS Note 1533334.1)
- Using Java Web Start with Oracle E-Business Suite (MOSFS Article ID KA1016, Formerly MOS Note 2188898.1)
What is Mozilla Firefox ESR?
Mozilla offers Extended Support Releases based on an official release of Firefox for organizations that are unable to mass-deploy new consumer-oriented versions of Firefox every four weeks. For more information see the following:
EBS Compatibility with Firefox ESR Point Releases
Mozilla may release new point release updates to address high-risk/high-impact security issues. These updates are considered to be certified with the EBS 12.2 on the day that they’re released. You do not need to wait for a certification from Oracle before deploying these new Firefox ESR security updates.
References
- Recommended Browsers for Oracle E-Business Suite Releases 12.2 and 12.1 (MOSFS Article ID KA1220, Formerly MOS Note 389422.1)
- Oracle E-Business Suite Release Notes for macOS Clients, Release 12 (MOFS Article ID KA1220, Formerly MOS Note 1533334.1)
- Using Java Web Start with Oracle E-Business Suite (MOSFS Article ID KA1016, Formerly MOS Note 2188898.1)
- FAQ: Essentials of Java Usage in Oracle E-Business Suite (MOSFS Article ID
KA1140, MOS Note 2510500.1)