2 Getting Started with Upgrading to Enterprise Manager 24ai Release 1

This chapter describes the high-level process for upgrading to Enterprise Manager 24ai Release 1.

In particular, this chapter covers the following:

Important:

  • The Oracle Management Service (OMS) release that is supported for Enterprise Manager 24ai Release 1 is 13c Release 5. Therefore, if you have any earlier releases of the OMS, first you need to upgrade it to 13c Release 5 and then you can upgrade to 24ai Release 1.

  • The Oracle Management Agent (Management Agent) release that is supported for Enterprise Manager 24ai Release 1 is 13c Release 5. Therefore, if you have any earlier releases of Management Agent, before upgrading the OMS to 24ai Release 1, make sure you upgrade your Management Agent to 13c Release 5 using Agent Upgrade Console from the Enterprise Manager Console.

Upgrading to 24ai Release 1 in a Single-OMS or Multi-OMS Non-HA Environment

Follow the steps below to upgrade to Enterprise Manager 24ai Release 1 in a single-OMS or multi-OMS non-HA (non-high availability) environment:

[Optional] Prepare Yourself for the Upgrade Familiarize yourself with the upgrade process, understand the implications, and review the important facts related to upgrade.

Upgrade Your OMS, Repository, Central Agent, and Plug-ins

Upgrade of your Enterprise Manager system is a three-step process: First you have to meet the prerequisites; then run the installer to upgrade the OMS, the repository, the central agent, and the plug-ins; and then perform the postupgrade tasks.

The installer guides you through the upgrade process, and upgrades not only the OMS, but also the repository, the central agent, and the existing plug-ins. In addition to upgrading your existing plug-ins, you can also deploy additional new plug-ins of your choice.

Step 1: Meet the Prerequisites

Before starting the upgrade, meet the upgrade prerequisites so that your environment is ready for the upgrade.

Step 2: Upgrade Your OMS, Repository, and Plug-ins

Run the installer and select the upgrade option to upgrade your Enterprise Manager system.

There are various ways in which you can upgrade the OMS and the Management Repository, either in graphical mode using the installer, in silent mode using a response file, or upgrade software-only using the installer or a response file.

The recommended method is to upgrade software-only in graphical mode using the installer. For details, see Upgrade Software Only with Plug-ins and Configure Later.

Step 3: Upgrade Your Central Agent

Note:

Starting with Enterprise Manager 24ai Release 1, the central agent is upgraded during the OMS upgrade process.

Step 4: Perform Postupgrade Tasks

Perform the postupgrade tasks to verify that the upgrade was successful.

Upgrade Your Standalone Agents

Your upgrade is complete only after you upgrade all your standalone agents. Upgrade of your standalone agents is a three-step process - you have to first upgrade one of the standalone agents using the Agent Upgrade Console, then create a gold image out of that, and then upgrade the rest of them using that gold image.

Step 1: Upgrade a Standalone Agent

As a prerequisite, first upgrade one of your standalone agents.

Step 2: Create an Agent Gold Image

Create an agent gold image and an image version. Set it to the current version, and subscribe the standalone agents to this version.

  1. Creating an Agent Gold Image Using Gold Agent Images Home Page

  2. Creating an Agent Gold Image Version Using the Gold Agent Images Home Page

  3. Setting a Particular Agent Gold Image Version as the Current Version Using Gold Agent Images Home Page

  4. Subscribing Management Agents to an Agent Gold Image Using Gold Agent Images Home Page

Step 3: Update the Standalone Agents

Using the agent gold image, update all other standalone agents.

Updating Standalone Management Agents Using Agent Gold Image Version Using Gold Agent Images Home Page

Upgrading to 24ai Release 1 in an HA Environment (Primary and Standby OMS Instances Where the Standby OMS Is Created Using Storage Replication)

Follow the steps below to upgrade your primary and standby OMS instances where the standby OMS is created using Storage Replication:

  1. Upgrade the primary Enterprise Manager site, both OMS and Management Agents. There will be some downtime as the primary OMS will go down during upgrade process. For instructions, see Upgrading to 24ai Release 1 in a Single-OMS or Multi-OMS Non-HA Environment.
  2. Verify the new middleware home on the standby storage server. Contact your system administrator to make sure that the new middleware home is also replicated to the standby storage server.

Note:

You do not have to remove the standby OMS as part of this procedure.