How Many Databases Can Run on an RDS DB Instance?
The maximum number of databases that can run on an RDS DB instance depends on the DB engine settings.
If there are enough CPU, memory, and storage resources, there are no limitations to the number of databases running on a DB instance. However, the number of tables in the databases affects the backup speed. If there are more than 500,000 tables, the backup will fail.
- RDS for MySQL allows you to create numerous databases and tables. For details, see the official MySQL documentation.
- RDS for PostgreSQL allows you to create numerous databases and database accounts.
Product Consulting FAQs
- What Should I Pay Attention to When Using RDS?
- What Is the Availability of RDS DB Instances?
- How Do I Distinguish Between General-Purpose and Dedicated RDS for MySQL Instances Using Cloud SSDs?
- Will My RDS DB Instances Be Affected by Other User Instances?
- Does RDS Support Cross-AZ High Availability?
- Can RDS Primary/Standby DB Instances Be Changed to Single DB Instances?
- What Can I Do About Slow Responses of Websites When They Use RDS?
- Can I Change the Replication Mode Between Primary DB Instances and Read Replicas?
- What Is the Time Delay for Primary/Standby Replication?
- Can Multiple ECSs Connect to the Same RDS DB Instance?
- Can I Encrypt the Disk After Purchasing an RDS DB Instance?
- Will Backups Be Encrypted After Disk Encryption Is Enabled for My RDS Instance?
- Does RDS for MySQL Support Encryption Functions?
- What Are the Restrictions on RDS for MySQL DB Instances After GTID Is Enabled?
- Will Different RDS DB Instances Share CPU and Memory Resources?
- How Many Databases Can Run on an RDS DB Instance?
- Is RDS for MySQL Compatible with MariaDB?
- Does RDS for MySQL Support TokuDB?
- What Is the Maximum Size Allowed for a Single Table in RDS for MySQL Instances?
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