ApsaraDB RDS：Change the billing method from serverless to pay-as-you-go

This topic describes how to change the billing method of an ApsaraDB RDS for PostgreSQL instance from serverless to pay-as-you-go.

Scenarios

If your workloads slightly fluctuate or you want to manually change instance specifications, you can change the billing method of your RDS instance from serverless to pay-as-you-go.

For more information, see Serverless ApsaraDB RDS for PostgreSQL instances.

Prerequisites

Your RDS instance must meet the following requirements:

• The RDS instance runs PostgreSQL.

• The RDS instance runs RDS Basic Edition or RDS High-availability Edition.

• The RDS instance uses the serverless billing method.

• The RDS instance is in the Running state.

Limits

You can change the billing method between pay-as-you-go and serverless. The change can be performed only once within 24 hours.

Impacts

If you change the billing method of your RDS instance from serverless to pay-as-you-go, an instance switchover occurs during the change. Make sure that your application is configured to automatically reconnect to the RDS instance. To automatically reconnect to an RDS instance, you must complete the required configurations in your application. For more information about the impacts of an instance switchover, see Impacts of an instance switchover.

Usage notes

We recommend that the number of CPU cores of your RDS instance be greater than or equal to the maximum number of RDS Capacity Units (RCUs). For example, if the maximum number of RCUs of the serverless RDS instance is 4, make sure that the number of the CPU cores of the pay-as-you-go RDS instance to which you want to change is greater than or equal to 4. Example: pg.n4m.4c.2m. The pg.n4m.4c.2m instance type indicates that the pay-as-you-go RDS instance provides 4 CPU cores and 16 GB of memory.

Billing rules

You are not charged for the change operation. For more information about the billing rules of a pay-as-you-go RDS instance, see Billing overview.

Procedure

1. Log on to the ApsaraDB RDS console and go to the Instances page. In the top navigation bar, select the region in which your RDS instance resides. Then, find the RDS instance and click the ID of the RDS instance.

2. In the Configuration Information section of the Basic Information page, click Change to Pay-As-You-Go.

3. On the ApsaraDB RDS buy page, configure the Instance Type and Switching Time parameters.

4. Read and select Terms of Service and click Pay Now. In the dialog box that appears, confirm the settings and click OK to complete the payment.

   Note

   During the change, the status of your RDS instance changes to Upgrading. After the change is complete, the status of the RDS instance changes to Running.

FAQ

I change the billing method of my RDS instance from serverless to pay-as-you-go. After I log on to the Expenses and Costs console and go to the Orders page, a new purchase order is displayed. Why?

When you change the billing method of your RDS instance to pay-as-you-go, a pay-as-you-go RDS instance is created, and the data of the original RDS instance is migrated to the new pay-as-you-go RDS instance. As a result, a new purchase order is displayed.

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