This topic describes the limits of RDS MariaDB. To guarantee stability and security, you must understand the limits.

The following table describes the limits of common actions and configurations in RDS MariaDB.

Item Limit description
Parameter modification The RDS console or supported API actions can be used to modify database parameters. But For security parameters, some parameters cannot be modified. For more information, see Use the console to set parameters.
Database root permission The root and sa permissions are not provided.
Database backup
  • Supported CLIs or GUIs can be used for logical data backup.
  • For physical data backup, the RDS console or supported API actions must be used.
Data restoration
  • Supported CLIs or GUIs can be used for logical data restoration.
  • For physical data restoration, the RDS console or supported API actions must be used.
MariaDB storage engine
  • Currently only InnoDB is supported.
  • For performance and security purposes, we recommend that you use InnoDB.
  • Memory is not supported. If you create Memory engine tables, they are automatically converted to InnoDB engine tables.
Database replication MySQL provides a dual-node cluster based on the master/slave replication architecture. The slave instance in the architecture is invisible to you, and your application cannot access to the slave instance directly.
Instance restart Instances must be restarted through the RDS console or supported API actions.