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Oracle® Enterprise Manager Cloud Control Administrator's Guide
12c Release 3 (12.1.0.3)

E24473-27
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11 Maintaining Enterprise Manager

Enterprise Manager provides extensive monitoring and management capabilities for various Oracle and non-Oracle products. Used to manage your heterogeneous IT infrastructure, Enterprise Manager plays an integral role in monitoring and maintaining the health of your IT resources. It is therefore essential to ensure Enterprise Manager itself is operating at peak efficiency.

To help you maintain your Enterprise Manager installation, a variety of enhanced self-monitoring and diagnostic functionality is available from the Enterprise Manager console. These functions are designed to help you understand and monitor various components of Enterprise Manger, monitor/measure the quality of services Enterprise Manager provides, diagnose failures quickly, and manage Agents more easily.

This chapter covers the following topics:

11.1 Overview: Managing the Manager

Although Enterprise Manager functions as a single entity to manage your IT infrastructure, in reality it is composed of multiple components working in concert to provide a complete management framework from a functional standpoint. All major components of Enterprise Manager have been grouped into a single system. A special set of services has been created (based on the system) to model Enterprise Manager functions.

Management Features

  • Topology view that allows you to see all major components of Enterprise Manager and their current status.

  • Dashboard displaying the overall health of Enterprise Manager.

  • Full control of the Agent directly from the Enterprise Manager console. Functions include:

    • View/edit Agent configuration properties.

    • View Agent(s) configuration history and compare the results against other Agents.

    • Perform Agent control operations (start/stop/secure).

    • Upgrade Management Agents

11.2 Health Overview

The Health Overview provides a comprehensive overview of OMS and Repository operation and performance, and therefore allows you to view the overall health of your Enteprise Manager environment.

Accessing the Health Overview

From the Setup menu, select Manage Cloud Control and then Health Overview.

All major areas of Enterprise Manager are represented.

  • Overview: Provides key information for active Management Services such as the Management Agents, the WebLogic Administration Server, total number of monitored targets, number of administrators, and server load balancer (SLB) upload and console URLs, provided SLB is configured. If configured, the SLB upload and console URLs are also displayed.

  • Repository Details: Provides physical information about the Management Repository and the host on which the database is located. You can drill down into the database home page for more information and carry out administrative operations.

  • Job System Status: Displays key operational parameters of the Enterprise Manager Job service. For detailed information, you can click on the status icon to drill down into the Enterprise Manager Job Service home page.

  • Console Activity: Displays the overall load on the Enterprise Manager console through the average number of requests per minute and the average time required to process those requests.

  • Alerts: Provides details on the metric errors recorded and when an alert was triggered. In-context links to Incident Manager are also provided.

  • Performance Charts: Upload Backlog and Upload Rate, Backoff Requests, Notification backlog. You can drill down into any chart to view detailed metric information.

Figure 11-1 Health Overview Page

Surrounding text describes Figure 11-1 .

From this page, you can carry out all monitoring and management operations using the OMS and Repository menu.

Note:

The Diagnostic Metrics page is intended for use by Oracle Support when diagnosing issues with the OMS. The page can be accessed by selecting Monitoring and then Diagnostic Metrics from the OMS and Repository menu.

Figure 11-2 Management Services and Repository Operations

Surrounding text describes Figure 11-2 .

11.3 Repository

The Repository page provides you with an overview of the status and performance of the Repository DBMS Jobs that handle part of Enterprise Manager's maintenance and monitoring functionality. These DBMS jobs run within the Management Repository and require no user input. Charts showing the key Repository Details and Backlog in Repository Collection are provided The Scheduler Status region provides the status of the scheduler and the number of Job Queue Processes.

Accessing the Repository Page

From the Setup menu, select Manage Cloud Control and then Repository.

Figure 11-3 Repository Page

repository page

From the Repository Details region, you can expand Management Service Repository Sessions details to view the exact number of repository connections per individual Enterprise Manager subcomponent such as the event system, console, job system, or connector framework.

Figure 11-4 Repository Sessions Per Subcomponent

Repostory sessions

The Repository Scheduler Jobs Status region provides details of the DBMS Jobs regarding their status, throughput, processing time, the next scheduled run and the last scheduled run.

To determine how well the Management Repository is handling its share of the Enterprise Manager functionality, view the Throughput per second and Processing Time Percent (Last Hour) columns. If the Processing Time Percent (Last Hour) is large and the Throughput is low, there may be problems in that area of management.

Note:

Processing Time (%) Last Hour may exceed 100% if a job runs continuously for more than an hour. For example, if you see 125.00 in this column, it means that the job ran for 75 minutes (125 % of one hour).

Advanced Queuing (AQ) provides database-integrated message queuing functionality that allows application messages to be stored persistently and propagated between queues on different machines and databases. The Management Services AQ Status region list the details of DEQUEUE and ENQUEUE status for messages specific to the Management Services AQ.

11.4 Controlling and Configuring Management Agents

Beginning with Enterprise Manager Cloud Control 12c, controlling Management Agents can be performed directly from the Enterprise Manager console. This provides a central point where all Management Agents within your monitored environment can be compared, configured and controlled.

11.4.1 Manage Cloud Control Agents Page

The Agents page lists all Management Agents within your monitored environment. This page also includes misconfigured, blocked and both upgradable and non- upgradable Agents.

Accessing the Agent Page

From the Setup menu, select Manage Cloud Control and then Agents.

Figure 11-5 Agent List Page

agent list page

Misconfigured and Blocked Agents

A misconfigured Agent is an Agent that is not able to perform a heartbeat or upload data to the Oracle Management Service (OMS) due to invalid configuration or invalid data. Agent misconfiguration alerts are triggered by the following metrics:

  • Consecutive metadata upload failure count

  • Consecutive ping failure count

  • Consecutive severity upload failure count

  • OMS Agent time skew

If the Agent heartbeat or upload requests are failing consistently, and the problem cannot be resolved in a timely manner, you can manually block the Agent to prevent excessive load on the OMS. When you block an Agent, the OMS rejects all heartbeat or upload requests from the blocked Agent. However, even though blocked Agents continue to collect monitoring data, it will not be able to upload any alerts or metric data to the OMS. Once the Agent configuration problem is resolved, you must manually unblock the Agent to resume normal operation.

Note:

Before unblocking the Agent, ensure that all issues related to Agent misconfiguration have been resolved.

From this page, you can also initiate the Agent upgrade process. For more information about upgrading Agents see "Upgrading Multiple Management Agents".

11.4.2 Agent Home Page

The Agent home page provides details for a single Agent. This page also lets you drill down for more detailed information. You can access an Agent home page by clicking on a specific Agent from in the Agent list page or by selecting it from the All Targets page.

Figure 11-6 Agent Home Page

Graphic shows the Agent home page.
  • The Summary region provides primary details of the Agent such as its status and availability. The Interaction with Management Service region provides details on the communication between the OMS and the Agent and metric extensions and management plug-ins deployed in the Agent.

  • The Status region provides further details on the Agent status such as the number of restarts, the action that the Agent is performing currently.

  • The Performance, Usage and Resource Consumption charts provide further details on the Agent in graphical format.

  • The Incidents region lists the incidents recorded for the Agent.

  • The Monitoring region provides details on the targets that are being monitored by the Agent. You can filter targets in this region by All, Broken, and Not Uploading. Separate tabs within the Monitoring section display Metric Issues and Top Collections.

11.4.3 Controlling a Single Agent

Control operations for a single Agent can be performed on the Agent home page for that Agent.

  1. Navigate to the desired Agent home page.

  2. From the Agent drop-down menu, choose Control and then one of the control operations (Start Up/Shut Down, or Restart)

    Note:

    You must have at least operator privileges in order to perform Agent control operations.

Figure 11-7 Control Operations from the Agent Home Page

Graphic shows the Agent home page witht he control menu displayed.

Upon choosing any of the above control menu options, a pop-up dialog requesting the credentials of the user displays. These operations require the credentials of the OS user who owns the Agent. At this point, you can either choose from a previously stored username/password, preferred or named credential. You also have the option of choosing a new set of credentials which could also be saved as the preferred credential or as a named credential for future use.

Once you are authenticated, the chosen control operation begins and continues even if the pop-up dialog is closed. Any message of failure/success of the task is displayed in the pop-up dialog.

When choosing the Secure/Resecure/Unsecure options, you must provide the requisite Registration Password.

Agent Control When Using a Server Load Balancer

When choosing the Agent Secure/Resecure options in a multi-OMS enviroment with a server load balancer (SLB), the Agent will be secured/resecured against the SLB automatically without administrator intervention.

11.4.4 Configuring Single Management Agents

Configuration operations for a single Agent can be performed from the Agent home page. To access the Agent properties page:

  1. Navigate to the desired Agent home page.

  2. From the Agent drop-down menu, select Properties.

    Note:

    You must have at least Configure privileges in order to perform Agent configuration operations.

Figure 11-8 Agent Properties Page

Graphic shows the agent properties page.

The properties on this page can be filtered to show All Properties, Basic Properties, or Advanced Properties. The Basic Properties are a simple name, value combination of a property and its value. Advanced Properties are also a combination of name and value but can also be grouped into categories. You must have at least configure privileges in order to modify the existing properties and set custom properties.

11.4.5 Controlling Multiple Management Agents

In order to perform control operations on multiple Management Agents, Enterprise Manager makes use of the Job system to automate repetitive tasks. Therefore, you must have Job privileges for controlling multiple Management Agents through a single action. To access

  1. From the Setup menu, select Manage Cloud Control and then Agents. The Agent page displays.

  2. Select multiple Management Agents from the list.

  3. Click one of the control operation buttons (Start Up/Shut Down/Restart/Secure/Resecure/Unsecure).

When you click on any of the control operations, you are taken to the Job creation wizard where you schedule a new job to perform the action on the selected Agents.

Figure 11-9 Multiple Agent Control Operation: Job Creation

Graphic shows the job creation wizard for multi-agent control operations.

In the Jobs page, you can view the chosen Management Agents in Target section in the General tab. You can add more Management Agents by clicking the Add button. You then provide the parameters for the operation in the Parameters tab, if needed. The credentials must be specified in the Credentials tab where you can either choose from a previously stored username/password, preferred, or named credential. You also have the option of choosing a new set of credentials which could also be saved as the preferred credential or as a named credential for future use.You are given the option to start the job immediately or schedule the job for a later time. At this point, you can also create a repeating job by specifying the job start time, the frequency, and the end time.

The Access tab displays the Administrator details and the access levels they have to the job. You can then add a new administrator or modify the access level to View or Full, if you have the requisite privileges.

Figure 11-10 Job Creation: Access Tab

Graphic shows the Access tab of the job creation wizard.

Note:

Administrators with insufficient privileges can also schedule jobs for these control operations, but in this situation, the jobs will not complete successfully.

11.4.6 Configuring Multiple Agents

As with multi-Agent control operations, you can also perform Agent configuration on multiple Agents in the same way. This greatly simplifies standardizing Agent configurations across your enterprise. To access Agent properties:

  1. From the Setup menu, select Manage Cloud Control and then Agents. The Agent page displays.

  2. Select multiple Management Agents from the list.

  3. Click Properties. As with any multi-Agent operation, configuration is implemented using the Job system.

Figure 11-11 Agent Properties Page

Surrounding text describes Figure 11-11 .

In the Jobs page, you can view the chosen Management Agents in the Target section of the General tab. You can add more Management Agents by clicking the Add button if necessary. In the Parameters tab, you provide the modified value for a particular set of properties that you want to change. You can also set a custom property for the chosen agents. No credentials are required for modifying Agent properties.

The Access tab displays the administrator details and the access levels they have to the job. You can then add a new administrator or modify the access level to View or Full if you have the requisite privileges.

Figure 11-12 Multi-Agent Configuration: Job Access

Graphic shows the multi-agent configuration job (Access tab).

11.4.7 Upgrading Multiple Management Agents

When you upgrade to Enterprise Manager Cloud Control 12c Release 2, you essentially upgrade your Oracle Management Service (OMS) from 12c Release 1 (12.1.0.1) to 12c Release 2 (12.1.0.2), but not your target Oracle Management Agents (Management Agents). To mass-upgrade your Management Agents, access the Upgrade Agents page. To access this page, follow these steps:

  1. From the Setup menu, select Manage Cloud Control, then select Agents.

  2. Click Upgradable, then select the Management Agents you want to upgrade.

  3. Click Upgrade.

Alternatively, to access the Upgrade Agents page, from the Setup menu, select Manage Cloud Control, then select Upgrade Agent. For more information on upgrading Management Agents, refer Upgrading Oracle Management Agents.

11.5 Management Services

The Management Services page displays the list of Management Services, their status, incidents, the loader throughput , CPU usage, and the JVM memory usage metrics. In addition, the Management Services displayed can be filtered by Normal Mode, Console Only, PBS only and Standby Management Services.

Accessing the Management Services Page

From the Setup menu, select Manage Cloud Control and then Management Services.

Figure 11-13 Management Services Page

management services page

When an OMS is decommissioned, status will be shown as down and a delete button will be displayed, allowing you to remove the decommissioned OMS from Enterprise Manager.

By clicking on the individual Management Service, you can drill down to that OMS target home page for explicit information and status.

11.6 Viewing Enterprise Manager Topology and Charts

The Enterprise Manager Topology page provides a graphical representation of the Enterprise Manager infrastructure components and their association. Each node in the hierarchy displays key information about the member type, the host on which it resides, and the number of incidents, if any. The incident icons on each of the nodes expand to display a global view of current status for each node in the hierarchy.

Note:

In order for the Enterprise Manager repository database to appear in the Topology page, you must first manually discover the database. Manual discovery is also required in order to have the database's metric data (Database Time (centiseconds per second)) displayed in the charts.

Accessing the Enterprise Manager Topology

  1. From the Setup menu, select Manage Cloud Control and then Health Overview.

  2. Click on the OMS and Repository menu to display available operations that can be performed from this page.

  3. Select Members and then Topology.

Figure 11-14 Enterprise Manager Topology

Graphic shows the Enterprise Manager topology page

Enterprise Manager Charts

The Enterprise Manager Charts page displays eight charts representing key areas that together indicate the overall health of Enterprise Manager. These are Overall Files Pending Load -Agent, Job Step Backlog, Job Step Throughput (per second), Request Processing Time (ms), Database Time (centiseconds per second), CPU Utilization (%), Pages Paged-in (per second), Pages Paged-out (per second). Data can be viewed for the Last 24 hours, last 7 days or last 31 days.

Accessing the Enterprise Manager Charts

  1. From the Setup menu, select Manage Cloud Control and then Health Overview.

  2. Click on the OMS and Repository menu to display available operations that can be performed from this page.

  3. Select Monitoring and then Charts.

Figure 11-15 Enterprise Manager Charts

Enterprise Manager Charts