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# Specify a startup mode

The startup mode specifies the state in which a server instance should be started. The default is to start in the `RUNNING` state.

To specify the startup mode:

1. If you have not already done so, in the Change Center of the Administration Console, click Lock & Edit (see Use the Change Center).
2. In the left pane of the Console, expand Environment and select Servers.
3. In the Servers table, click the name of the Managed Server instance for which you want to specify the startup mode.
4. Select Configuration > General and at the bottom of the page, click Advanced.
5. In the Startup Mode field, select:
   1. Running: In the `RUNNING` state, a server offers its services to clients and can operate as a full member of a cluster.
   2. Administration: In the `ADMIN` state, the server is up and running, but available only for administration operations, allowing you to perform server and application-level administration tasks without risk to running applications. For more information, see ADMIN State.
   3. Standby: In the `STANDBY` state, the server listens for administrative requests only on the domain-wide administration port and only accepts life cycle commands that transition the server instance to either the `RUNNING` or `SHUTDOWN` state. Other administration requests are not accepted. If you specify `STANDBY`, you must also enable the domain-wide administration port. See Configure the domain-wide administration port.
6. Click Save.
7. To activate these changes, in the Change Center of the Administration Console, click Activate Changes.
   Not all changes take effect immediately—some require a restart (see Use the Change Center).

After you finish

Start Managed Servers. See:

- Start Managed Servers in a cluster
- Start Managed Servers in Standby mode
- Start Managed Servers in Admin mode