You cannot use large databases with this program license. Contact your system administrator to expand the database

I want to open the older fdb extension with 2009 r2

gives me an error .

You cannot use large databases with this program license.

Contact your system administrator to expand the database

any toughts

Change the license to partner license. The DB may going to open from Microsoft demo license.

Well only change to partner license, if you are a partner! [;)] Otherwise correct answer. When using Dynamics NAV 2009 classic with the native database (and older), then the license limits how large your database may get. If it got larger, then you had to buy more database space! And if you try to open a real database with the demo license (included with the install), then it will typically not allow it, as the database would be bigger than the demo database.

So find the correct license, and it will open correctly.