Oracle OEM Holistic Patch 

The Concept

Starting with Oracle Enterprise Manager (OEM) 13.5 RU24 (October 2024), Oracle introduced the Holistic Patch for OEM — a unified patching model that consolidates several separate updates into a single coordinated package.

Previously, administrators had to patch:

* The OMS and Agents with the quarterly Release Update (RU).
* OEM Application via the System Patch Bundle (SPB).
* WebLogic CPU and JDK manually.

There was an element of complication because of the need to keep the solution homogeneous. With the Holistic Patch, the last two steps are merged into a single patch bundle.

Now we have a new Holistic patch for OEM that is released with each new OMS Release Update.

Prerequisites

• Apply RU 24 Patch PATCH 36761595 /later on all OMSes before applying Oct Holistic Patch  PATCH 37305292            (OR)
• Apply RU 25 Patch PATCH 37057635 /later on all OMSes before applying Jan 2025 Holistic Patch PATCH 37562062 
             (OR)
   
• Apply RU 26 Patch PATCH 37439429 /later on all OMSes before applying April 2025 Holistic Patch  PATCH 37878436            (OR)
• Apply RU 27 Patch PATCH 37784425 /later on all OMSes before applying July 2025 Holistic Patch  PATCH 38194776 
             (OR)
• Apply RU 28 Patch PATCH 38100300/later on all OMSes before applying Oct 2025 Holistic Patch  PATCH 38544605 
• Apply RU 29 Patch 38549606/later on all OMSes before applying Jan 2026 Holistic Patch  PATCH 38865007
   
• Always recommended to Apply Latest Holistic Patch  PATCH 38865007 as per the readme instructions very carefully.
   

• To apply Holistic Patch it is mandatory to upgrade DB client version to 19c. Refer the following document.(If DB Client 19c upgrade has already been done as part of October 2024/Jan 2025 Holistic Patch then DB Client 19c upgrade in this step should be skipped and should not be executed again)
  
  OEM 13C: How To Upgrade DB Client Version to 19c on OMS (Doc ID KB307286)

How It Works ?

Each quarter, it is recommended to do the following procedure:

1- Apply the RU to update the OMS and Agents.

2- Then apply the corresponding Holistic Patch to update WebLogic, the JDK, and all related security components.

The following Oracle Notes should guide you into a safe deployment of this strategy :
* If you are using OEM 13.5 : (Doc ID 3002450.1) .
* If you are using OEM 24.1 : (Doc ID 3082475.1).

Below is a walk-through of the steps I performed to apply the July 2025 Holistic Patch for OEM 13.5.
This procedure assumes the OMS and Agents have already been patched to 13.5 RU27 (July 2025).

Preparation

Download, copy, and unzip the related patches, in this case :

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• Patch 38194776: Oracle Enterprise Manager 13c Release 5 Holistic Patch for Oracle Management Service – July 2025
• Patch 34761383: DB Client 19c Upgrade for FMW 12.2.1.4.0
• Patch 35039230: PATCH 34761383 FAILS DURING UPGRADE DUE TO UPDATED ORACLE_COMMON/JDK/JRE
• Patch 31190532: PROVIDE A PATCH USING INSTALLER AUTOUPDATE PATCH FEATURE FOR OL8 OS PACKAGES CHECKS

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Before proceeding, plan your rollback strategy — For instance I took a VM snapshot of my OEM machine and created a guaranteed restore point for the repository database:

for database you can take full database backup else create a guarantee restore point Before proceeding, plan your rollback strategy — For instance I took a VM snapshot of my OEM machine and created a guaranteed restore point for the repository database:

create restore point CLEAN_DB guarantee flashback database;