Stopping, Starting, and Restarting Compute Nodes

From the Oracle Database Cloud Service console, you can stop, start, and restart the compute node virtual machines (VMs) that are associated with a database deployment on Oracle Database Exadata Cloud at Customer.

Note:

It is also possible to stop and start a compute node by connecting to the compute node and using an operating system command, such as shutdown or reboot. However, Oracle recommends that you use the Oracle Database Cloud Service console to stop and start the compute nodes, rather than using an operating system command.

Topics

Stopping a Compute Node

You can stop individual compute node VMs associated with an Exadata Cloud at Customer database deployment from the Oracle Database Cloud Service console. When you stop a compute node, the node is not available to any of your Exadata Cloud at Customer databases that share the compute node. If you stop all of the compute nodes associated with an Exadata Cloud at Customer environment, you effectively stop all of your databases running on the environment.

To stop a compute node:

Open the Oracle Database Cloud Service console.

For detailed instructions, see Accessing the My Services Dashboard and the Oracle Database Cloud Service Console.
In the list, click the name of a database deployment that is associated with the compute node that you want to stop.

The Oracle Database Cloud Service Overview page is displayed. The page contains the list of compute node resources, with a separate action menu () for each entry.
From the action menu that is associated with the compute node you want to stop, select Stop Compute Node, and then confirm the action.

While the compute node is being stopped, the database deployment is placed into a maintenance state. After the compute node is stopped, the associated icon shows a red alert triangle to indicate that the node is stopped ().

Caution:

Do not use the halt, shutdown, or shutdown -h commands to shut down a compute node. Doing so stops the compute node indefinitely and requires manual intervention by Oracle Cloud system administrators to restart the compute node.

Starting a Stopped Compute Node

To start a stopped compute node VM:

Open the Oracle Database Cloud Service console.

For detailed instructions, see Accessing the My Services Dashboard and the Oracle Database Cloud Service Console.
In the list, click the name of a database deployment that is associated with the compute node that you want to start.

The Oracle Database Cloud Service Overview page is displayed. The page contains the list of compute node resources, with a separate action menu () for each entry.
From the action menu that is associated with the compute node that you want to start, select Start Compute Node, and then confirm the action.

While the compute node is being started, the database deployment is placed into a maintenance state.

Restarting a Compute Node

When you restart a compute node VM, the compute node is stopped and then immediately started again.

To restart a compute node:

Open the Oracle Database Cloud Service console.

For detailed instructions, see Accessing the My Services Dashboard and the Oracle Database Cloud Service Console.
In the list, click the name of a database deployment that is associated with the compute node that you want to restart.

The Oracle Database Cloud Service Overview page is displayed. The page contains the list of compute node resources, with a separate action menu () for each entry.
From the action menu that is associated with the compute node you want to restart, select Restart Compute Node, and then confirm the action.

While the compute node is being restarted, the database deployment is placed into a maintenance state.

Viewing Past Stop, Start and Restart Activity

You can see information about past stop, start, and restart activity for an Exadata Cloud at Customer database deployment by viewing the activity log:

View the Overview page for the database deployment:
1. Open the Oracle Database Cloud Service console.
  
  For detailed instructions, see Accessing the My Services Dashboard and the Oracle Database Cloud Service Console.
2. In the list of deployments, click the name of the database deployment whose past activity you want to view.
  
  The Oracle Database Cloud Service Overview page is displayed.
To expand the activity log, click the triangle icon beside the Activity title.

The activity log shows information about past operations performed on the database deployment, with the most recent activity first.
To see details about an operation, click the triangle icon beside the operation.

If an operation failed, the details include information about why it failed.