Oracle DB Patching Strategy - RUs & MRPs
Release Updates (RUs)
RUs are highly tested bundles of critical fixes which usually contain following type of fixes:
- Security related
- Regression (bug fixes)
- optimizer fixes (turned off by default)
- functional (which may also include feature extensions as well)
RUs are released Quarterly (3rd Tuesday of Jan, April, July and October).
Monthly Recommended Patches (MRPs)
Starting update 19.17, MRPs will be delivered monthly, for each RU in the 6 months following each RU release.
Oracle is providing MRPs only for Linux x86-64 platform (Other OS will still get the quarterly Release Update Revisions (RURs).
MRPs are a collection of one-off patches bundled together. It also include the latest critical and regression fixes. MRPs does not contain optimizer fixes (off by default in RU), Functional enhancements and proactive functional fixes.
MRPs are cumulative: Each new MRP contains the patches in any earlier MRPs released for a given release update, as well as the current set of one-off patches that Oracle recommends for the RU.
Youtube Shorts on this topic: https://www.youtube.com/shorts/VeaIDOhAARo
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