You can use the RDS console or APIs to create an RDS instance. For more information about instance pricing, see Pricing of ApsaraDB for RDS. This topic describes how to use the RDS console to create an instance. For more information about how to use the APIs to create an instance, see CreateDBInstance.


  • You have registered an Alibaba Cloud account.


  • Subscription instances cannot be converted to Pay-As-You-Go instances.
  • Pay-As-You-Go instances can be converted to Subscription instances. For more information, see Change the billing method.
  • An Alibaba Cloud account can create up to 30 Pay-As-You-Go RDS instances. You can open a ticket to apply for increasing the limit.


  1. Log on to the RDS console.
  2. On the Instances page, click Create Instance.
  3. Select Subscription or Pay-As-You-Go. For more information about the billing method, see Billing items and billing methods.
  4. Set the following parameters.
    Parameter Description
    Region Indicates the location of the RDS instance you want to purchase. You cannot change the region once you confirm your order.
    • Select the region closest to your users to increase the access speed.
    • Select the region where your ECS instance is located so that the ECS instance can access the RDS instance through the intranet. If the ECS instance and RDS instance are located in different regions, they can communicate only through the Internet and hence performance is degraded.
    Database Engine

    The supported database engines are MySQL, Microsoft SQL Server, PostgreSQL, PPAS (compatible with Oracle), and MariaDB TX.

    In this example, select PPAS (compatible with Oracle).

    Note The available database engines vary depending on the region you select.

    For RDS for PPAS, the supported versions are PPAS 9.3 and PPAS 10.

    Note The available versions vary depending on the region you select.
    Edition Select High-availability. This edition adopts the high-availability architecture with one master node and one slave node.
    Note The available product series vary depending on the region you select. For more information on the product series, see Product series overview.

    A zone is a physical area within a region. Different zones in the same region are basically the same.

    You can deploy the master and slave nodes of your RDS instance in the same zone or in different zones.

    Network Type
    • Classic Network: indicates a traditional network.
    • VPC (recommended): short for Virtual Private Cloud. A VPC is an isolated network environment and therefore provides higher security and performance than a classic network.
      Note Make sure the network type of the RDS instance is the same as that of your ECS instance so that the ECS instance can access the RDS instance through the intranet.

    Indicates the specifications of the RDS instance. Each instance type supports a specific number of CPU cores, memory size, maximum number of connections, and maximum IOPS. For more information, see Instance type list.

    RDS for PAAS supports the following instance type families:

    • General-purpose instance: owns dedicated memory and I/O resources, but shares CPU and storage resources with the other general-purpose instances on the same server.
    • Dedicated instance: owns dedicated CPU, memory, storage, and I/O resources.
    • Dedicated host: owns all the CPU, memory, storage, and I/O resources on the server where it is located.

    For example, 8 Cores 32 GB (Basic) indicates a general-purpose instance, and 8 Cores 32 GB (Dedicated) indicates a dedicated instance.


    Used for storing data, system files, binlog files, and transaction files.

  5. Set the duration (only for Subscription instances) and quantity, and click Buy Now.
    Note For a Subscription instance, you can:
    • Select Auto Renew in the Duration section. Then the system can automatically deduct fees to extend the validity period of your instance. For example, if you purchase a three-month Subscription instance with Auto Renew selected, the system automatically deducts frees of three months when the instance is about to expire.
    • Click Add to Cart and then click the cart to place the order.
  6. On the Order Confirmation page, review the order information, select Terms of Service, Service Level Agreement, and Terms of Use, click Pay Now, and complete the payment.

What to do next

  1. In the upper left corner of the RDS console, select the region where the instance is located, and view the instance details.
  2. Configure a whitelist.
  3. Create accounts.
  4. Apply for an Internet address (if you want to access the RDS instance through the Internet).
  5. Connect to the RDS instance.


API Description
CreateDBInstance Used to create an RDS instance.