I am in the process of migrating from XP to Linux (Unbuntu 9.10).
I need to migrate a larg(ish) BDB database (approx 5Gb) from my XP machine to the Linux machine).
The berkeley database was created using version 4.7.25 of the berkeley library.
Ubuntu 9.10 has libraries and utilities to deal with the db. You can install them like this:
You should be able to just move the file over and start working with it.