Amazon RDS supports six DB engine types—Amazon Aurora, MySQL, MariaDB, Microsoft SQL Server, Oracle, and PostgreSQL. The following table helps us to understand the connecting port and protocol for each of these DB instances:
Amazon RDS engine types |
Default port |
Protocol |
Aurora DB |
3306 |
TCP |
MariaDB |
3306 |
TCP |
Microsoft SQL |
1433 |
TCP |
MySQL |
3306 |
TCP |
Oracle |
1521 |
TCP |
PostgreSQL |
5432 |
TCP |
The Amazon RDS engine for Microsoft SQL Server and Oracle supports two licensing models: license included and Bring Your Own License (BYOL). If you are already invested in purchasing licenses for such databases, it can also be used as a BYOL with Amazon RDS to minimize monthly billing.
Supported instance types may vary for each Amazon RDS engine.