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Oracle® Enterprise Manager Cloud Control Advanced Installation and Configuration Guide
12c Release 3 (12.1.0.3)

E24089-27
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16 Running the OMS in Console-Only Mode

Oracle Management Service (OMS) is designed to run two types of services, mainly the console services and the background services. While the console services are required to render a GUI-rich console for Enterprise Manager, the background services are required to run critical jobs, upload operations, business logics, and so on.

Figure 16-1 illustrates the functioning of an OMS where both console services and background services are running.

Figure 16-1 Functioning of OMS with Active Console and Background Services

Surrounding text describes Figure 16-1 .

In a multi-OMS environment, to have a dedicated OMS for UI operation or to not run background services in SSA OMS, you can choose to shut down the background services, and run only the UI services, thus turning the OMS into a pure, console-only mode. In such a case, the Management Agents upload data to other OMS instances where both background services and UI services are running.

To run the OMS in console-only mode, follow these steps:

  1. Stop the OMS using the following command.

    $emctl stop oms

  2. Set the start up mode to console-only, using the following command.

    $emctl config oms -set_startup_mode console_only

  3. Start the OMS using the following command.

    $emctl start oms

Note:

Only the Additional OMS instances can be run in console-only mode, while the OMS instance that shares the host with the Admin Server cannot.

To revert the OMS instances to Normal mode, run the following command, and restart the OMS.

$emctl config oms -set_startup_mode normal