Patching Oracle RAC to 23.26.3 with OPatchAuto — Prerequisite Checks, Home Discovery, Apply, Rollback & Datapatch Verification (Full Walkthrough)
ORACLE DATABASE ADMINISTRATION Patching Oracle Grid Infrastructure and Database to Release 23.26.3 with OPatchAuto Munish Kumar Karna Senior Database Solution Architect | Oracle Certified Professional | RAC · ASM · Data Guard · GoldenGate · OCI Overview This walkthrough documents an end-to-end Release Update of a 2-node Oracle RAC environment (Grid Infrastructure and Database homes) from 23.26.2 to 23.26.3, applied using OPatchAuto — Oracle's automated, orchestrated patching utility for Oracle Home environments. Alongside the patch apply itself, this write-up also covers three things that are often skipped in patching notes but matter in real operations: how OPatchAuto discovers which Oracle Homes exist on a node, how to run a non-invasive prerequisite check before committing to a patch window, and how Datapatch registers (and reverses) SQL-level changes in the database dictionary. All command output and screenshots below are captured directly from the patchin...