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How does RDS MySQL modify to utf8mb4 character set

Last Updated: Apr 02, 2021


This article mainly describes how to modify a MySQL instance to the utf8mb4 character set.


Alibaba Cloud reminds you that:

  • Before you perform operations that may cause risks, such as modifying instance configurations or data, we recommend that you check the disaster recovery and fault tolerance capabilities of the instances to ensure data security.
  • You can modify the configurations and data of instances including but not limited to Elastic Compute Service (ECS) and Relational Database Service (RDS) instances. Before the modification, we recommend that you create snapshots or enable RDS log backup.
  • If you have authorized or submitted security information such as the logon account and password in the Alibaba Cloud Management Console, we recommend that you modify such information in a timely manner.

Please refer to the following documents and choose any way to modify MySQL instance to utf8mb4 character set.

Note: Changing the utf8 to utf8mb4 character set will not affect the subsequent Data Quality, and the existing data will not be affected, but the data storage space will increase.


  • ApsaraDB RDS for MySQL