Hi Andres,
you are using a non-certified database type, so you are not guaranteed the connection will work properly.
See DB pre-requirements here:
https://www.appeon.com/support/documents/appeon_online_help/pb2017/installation_guide_for_powerserver_pb_edition/ch02s04.html
This said, since you are using PowerServer .NET, you can only try if, by pure chance, the ODBC connection works (certified DB would let you use native drivers instead).
Best,
Marco
P.S.
I would rather try to migrate Ingres to a supported RDBMS.
i will be not posible to migrate the database .
it's a old legacy system. from the PB apps there a a few query only.
as a workaround if ODBC does not work i will create a WebService with the query and consume it from the PB/Appeon application