Enable the Serverless Computing feature

Hologres V2.1.17 and later versions support the Serverless Computing feature. You must enable this feature on your instance to use it. If the feature is disabled, the system uses your instance's resources to run SQL queries, even if you specify Serverless Computing resources.

You can view the status of the Serverless Computing feature for your instance in the Hologres console. Enabling this feature is free. You are charged for the CU-hours used only when SQL queries run successfully on Serverless Computing resources. For more information, see Usage and billing.

Follow these steps to enable the Serverless Computing feature on an instance:

New instances

Go to the Hologres instance list and click Create Instance. On the instance purchase page, set the Enable Serverless Computing parameter to Yes. For more information about purchasing a new instance, see Purchase a Hologres instance.
Existing instances

Go to the Hologres instance list and select a region from the top menu bar. Find the destination instance and click Upgrade in the Actions column. On the upgrade page, set the Enable Serverless Computing parameter to Yes.

Important
The instance restarts when the Serverless Computing configuration is enabled. Perform this upgrade during off-peak hours. We recommend that your application includes a reconnection mechanism. The upgrade process involves reallocating computing resources and changing metadata. The process typically takes 2 to 5 minutes to complete. Please wait for it to finish.

(Not recommended) Disable the Serverless Computing feature

We recommend that you keep the Serverless Computing feature enabled. This allows the system to schedule Serverless Computing resources to handle heavy workloads immediately, without having to first restart the instance to enable the feature.

If you still need to disable this feature, follow these steps:

Go to the Hologres instance list. From the top menu bar, select a region and find the destination instance. In the Actions column for the instance, click and select Downgrade. On the downgrade page, set the Enable Serverless Computing parameter to No.

Note

The instance restarts when you disable the Serverless Computing configuration. Perform this downgrade during off-peak hours. We recommend that your application includes a reconnection mechanism. This configuration change involves reallocating computing resources and changing metadata. The process typically takes 2 to 5 minutes to complete. Please wait for it to finish.
After you disable the Serverless Computing feature, you can no longer specify Serverless Computing resources. Any tasks that are running or queued on these resources will fail.