This article shows how to change the maximum connection pool size for applications that connect using ADO.NET.
To achieve this, you must take into account that for ADO.NET, the group size is the default of the DBMS. Also, to change it, you must set the Additional connection string attributes property.
Below is an example in which the Max Pool Size property is configured in the case of SQL Server.
Note that the Additional connection string attributes property can be configured as follows:
For SQL Server, the valid names for keyword values within the Connection String are detailed in SqlConnection.ConnectionString Property.