Amazon RDS for Oracle version 19c and 26ai received support for the September 2026 Monthly Recommended Patch (MRP), an incremental update building on the July 2026 Release Update (RU). This MRP bundles Oracle's Critical Security Patch Update alongside recommended fixes, aiming to improve database security and reliability within the AWS managed environment.
The update also includes the latest Oracle time zone file (DST version 46) addressing changes in daylight saving time rules for regions like British Columbia, Alberta, Morocco, and Western Sahara effective late 2026. Customers storing timezone-aware timestamps in these areas benefit from aligned time data by upgrading to this patch through the Amazon RDS Management Console or CLI.
Source & further reading
Amazon RDS for Oracle now supports September 2026 Monthly Recommended Patch ↗Source published 2026-10-28. This report was prepared with AI assistance from the linked primary-source material. Claims and limitations should be checked against the original announcement or research.