Clarification about Incr Pool Size parameter

[mcortellino]

Hello I am conducting laboratory test and fine tuning on Connection string parameters using ODP .NET 23.7.0.
I have a doubt about Incr Pool Size parameter, the docs says that this is the:

"Number of new connections to be created when all connections in the pool are in use."

So my assumption was that when I create the first connection, the driver should open 5 connections instead of 1.
But what actually happens is that it opens a number of connection between 1 and Incr Pool Size.

Most of the time the driver opens only 2 connections. So this parameter seems to be the Maximum number of connection created when all connections in the pool are in use. Is this correct?

Thanks