Amazon RDS (postgres) connection limit?

Question

I've searched the web and browsed the RDS docs, yet I can't seem to find an open connection limit.

For what it's worth, I'm planning on using the new Postgres flavor of RDS, but I suppose an answer from the mySQL side of the house would be acceptable as well.

Thanks!

Answer 1

If you setup a PostgreSQL RDS instance you can query for max_connections:

select * from pg_settings where name='max_connections'; 

max_connections is set to 5696.

Answer 2

Simply with show max_connections;

You can modify this value on the Parameter Groups on the RDS console. The value of max_connections in the default postgres9.3 Parameter Group is {DBInstanceClassMemory/12582880}. In version 9.4 the default value is {DBInstanceClassMemory/31457280}.