Oracle Enterprise Manager is Oracle's integrated enterprise information technology (IT) management product line, which provides the industry's only complete, integrated, and business-driven enterprise cloud management solution. The Self Update mechanism in Enterprise Manager 12c enables customers to download /import and deploy extensions.
This chapter provides an overview of patching, and describes how you can patch the Enterprise Manager core components, mainly Oracle Management Service (OMS), Oracle Management Agent (Management Agent), and Oracle Management Repository (Management Repository).
Overview
A patch is an entity that contains one more bugs fixes. In order to transform a software product with a defect to a software product without a defect, you must apply patches, this process is called Patching. The patching cycle involves downloading patches, applying patches, and verifying the applied patch to ensure that the bug fixes present in the patch reflect appropriately.
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Patching involves migrating from one version of the software product to another, within a particular release, unlike upgrading which involves moving from one release of a product to another newer release of the software product.
Oracle periodically releases the following types of patches to fix the bugs encountered in the core Enterprise Manager components:
Patching OMS and Management Repository
Patching OMS and Management Repository follows the Manual patching approach that requires you to follow step-by-step instructions to patch a target. This mechanism of patching expects you to meet certain prerequisites, manually validate the patch for applicability and conflicts, and patch only one target at a time.
This section contains the following topics:
OMS Patches
OMS patches typically fix one or more OMS errors encountered. These patches can be downloaded from My Oracle Support portal. For information about the critical OMS patches released by Oracle that apply to your environment, see the Patch Recommendation region available on the Patches and Updates tab in My Oracle Support. Alternately, if you know the patch number of the OMS patch that you need to apply, go to the Patch Search region available on the Patches and Updates tab, enter the patch number, and click Search. The OMS patches are applied using the
OPatch utility, or the emctl utility. For information on applying the patch see 'Applying OMS and Repository Patches'
In Enterprise Manager 12c, OMS patches are available as OMS Core Patches and OMS Plugin Patches, required to patch the core component and plugins respectively. Ensure that you navigate to the correct directory location under
<middleware_home> to patch OMS core or OMS plugin:
For example, to patch OMS core, you must navigate to
<middleware_home>/oms and for plugins, navigate to <middleware_home>/plugins .
Repository Patches
Enterprise Manager Repository patches typically update PL/SQL procedures, or other SQL content. They are patched using the
emctl patching tool.
Note:
The Repository Patches are applied on the OMS targets. For location details of a core, and plugin patch, see 'OMS Patches'
For information on applying the patch see 'Applying OMS and Repository Patches'
Applying OMS and Repository Patches
To apply OMS or repository patches, follow these steps:
Patching Enterprise Manager Agents
Oracle offers two approaches to apply the Agent patches: automated approach, and the manual approach. Oracle strongly recommends you to use the automated approach because it not only saves time and effort in mass-deploying patches but also reduces human intervention, thereby minimizing the errors involved while patching.
This section contains the following topics:
Management Agent Patches
Management Agent Patches are released to fix one or more errors encountered in the agent targets. In addition to the Management Agent running on OMS, you can patch all the agent targets that report to the OMS running on your host machine.
A GUI based utility called Patches and Updates is used to patch the Agent targets. For information about accessing the tool, see 'Accessing Patches and Updates'.
In Enterprise Manager 12c, there are separate Agent patches for core components and for plugins. Ensure that you navigate to the correct directory location under
<installation_base_directory> to patch Agent core or Agent plugin:
For example, to patch Agent core component, you must navigate to
<installation_base_directory>/core/ and for plugins, navigate to <installation_base_directory>/plugins .
Patches and Updates Versus My Oracle Support
The Table 16-1 captures the advantages of using Enterprise Manager Cloud Console over My Oracle Support for Automated Patching:
Table 16-1 Advantages of using Enterprise Manager Cloud Console to My Oracle Support
Oracle Enterprise Manager 12c Download FreeAutomated Agent Patching
Automated Patching is a quick-and-easy, reliable, and a GUI-based patching mechanism that is facilitated using Patch Plans, a new concept introduced through the Patches and Updates functionality within the Enterprise Manager Cloud Control console (Cloud Control console).
Automated patching can be performed in the Online mode, and in the Offline mode. In the Online Mode, you can connect to My Oracle Support Web site to download the patches. However, if you are patching in the offline mode, then you must ensure that the patches to be applied are already available on the Software Library.
This section includes the following:
Accessing Patches and Updates
To access the Patches and Updates page, in Cloud Control, from the Enterprise menu, select Provisioning and Patching, then select Patches and Updates.
The following page appears:
Oracle Enterprise Manager Cloud Control 12c Deep Dive Pdf Download
Some of the advantages of using the Patches and Updates page (Automated Patching approach) are:
Viewing Patch Recommendations
The Patch Recommendation region is one of the regions in the patching domain that proactively communicates all the recommendations that are applicable to your environment. This region minimizes human effort in terms of searching for Oracle recommended patches, which may or may not apply to your environment.
Note:
Keep the following points in mind:
Figure 16-1 captures the Patch Recommendations region as it appears in the Patches and Updates page.
Patches are primarily classified as Security patches, and Other Recommended patches. For example, if you select Security from the graph, all the security related patches are displayed on the Patch Recommendation page. Alternately, you can also view the patches by their target types. Click the bar graph to drill down to a list of recommended patches, view details about those patches, download the patches, or add them to a patch plan. The bar graph summarizes the number of issues found (for example, if there is one issue, then there is one recommendation for one target).
Patch Recommendation region allows you to:
Searching Patches
The Patch Search is a region in the patching domain that allows you to search for Oracle, Sun, Siebel, and Hyperion products. The primary purpose of searching a patch is to limit results to the exact patch name or number.
From Figure 16-2 you can see that the Patch Search region contains three tabs: Search, Saved, and Recent. The Search tab lets you apply the desired filters to drill down to the exact results. You can choose to save the search, and view it later. All the saved searches appear in the Saved region. A history of all the searches is registered in the Recent tab, and you can check the logs if you want to access them.
Use any of the following approaches to search for a patch:
Basic Search
To perform a Basic Search, follow these steps:
Advanced Search
To perform an Advanced Search, follow these steps:
Applying Management Agent Patches
To apply a Management Agent patch using patch plans, follow these steps:
Note:
Applying the core agent patch, or the plugin agent patch follows the same patching process (as listed in this section.)
Ensure that the patches selected are applied on homogeneous set of targets, which means that the patches selected should have the same platform and version, as the targets being patched. For example, 12.1.0.1.0 Linux x86 patches can only be applied on 12.1.0.1.0 LinuxX86 targets, any mismatch will result in a patching error.
Note:
For a demonstration about how to apply patches on Enterprise Manager 12
Oracle Enterprise Manager 12c Administration Cookbook Pdf Free Downloadc Agents using Cloud Control Console, see My Oracle Support note 1359221.1.Verifying the Applied Agent Patches
To verify the applied patches using Enterprise Manager, perform the following steps:
Validating Agent Patch Errors
Here are some of the errors that may appear during the Validation phase of patch plans:
Deinstalling the Applied Agent Patches
To roll back applied Agent patches, follow the deinstallation steps available in the
Readme.html or Readme.txt for the patch.
Oracle Enterprise Manager 12c Free DownloadManual Agent Patching
Manual patching is a patching mechanism that requires you to follow step-by-step instructions to patch a Management Agent manually. This mechanism of patching expects you to meet certain prerequisites, manually validate the patch for applicability and conflicts, and patch only one Management Agent at a time.
Note:
Oracle recommends you to use the automated patching mechanism because it not only saves time and effort in mass-deploying patches but also reduces human intervention, thereby minimizing the errors involved while patching.
To patch manually, you must perform the following steps:
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