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Showing posts from November, 2025

Migrate Oracle Database from Linux to Windows via RMAN

Introduction In this article, we will migrate a database from Linux to Windows via RMAN, step by step. This can also be referred to as cross-platform restoration using RMAN. This is the second of two posts covering cross-platform RMAN restoration between Windows and Linux, the reverse direction, Windows to Linux, is covered in our companion guide. Patch Consideration Oracle ships separate patch bundles for Windows and Linux, so a Windows RU patch and a Linux RU patch at the "same" version number aren't actually the same binary patch. Because of this, always run datapatch -verbose after the restore to reconcile the database's patch registry with whatever RU is actually installed on the target Windows binary, this post walks through that reconciliation in Steps 14 through 20 below, including a Java class mismatch that needed its own separate fix. Environment Used in this Guide Source Database Hostname devdb.oraeasy.com ...

Applying OMS RU Patch 37784425 to OEM 13.5

Introduction Oracle Enterprise Manager 13c releases regular Release Update (RU) patches that bundle bug fixes and plugin updates for the Oracle Management Service (OMS). This article walks through applying RU patch 13.5.0.27 ( 37784425 ) to an OEM 13c OMS running on Linux, from prerequisite checks through post-patch verification. What Is OMSPatcher and Why It Matters OMSPatcher is Oracle's patching utility for the OMS and its repository schema in EM Cloud Control — it plays the same role for OMS that OPatch plays for a standard Oracle Database Home. Unlike OPatch , OMSPatcher also handles registering plugin metadata and repository (MRS) artifacts, which is why the apply step later in this guide does more than just replace binaries. Prerequisites Before scheduling this patch, confirm the following. Missing any of these will either fail the prerequisite check or leave you without a way back if something goes wrong mid-patch. A maintenance window of at least 120 minutes...