how to open a corrupted progress v9.1e database
Assuming your tag is right and this is a Progress, not a Postgres (as in the text), database you can try forcing your way in. However, backup beforehand! A forced database will be marked as forced and might never work again. 

That aside, force might be a lifeline and the way to enter the database to dump it's content.

Here's a longer article about the force flag (-F).