At my company we use ODB [0] with SQLite in a VERY large commercial application. We've been using it for a couple of years now. Rock-solid.
ps.: ODB is GPL v2. We have a commercial license to avoid it. ODB also offers a "free" commercial license that imposes limits on the size of your database.
ps.: ODB is GPL v2. We have a commercial license to avoid it. ODB also offers a "free" commercial license that imposes limits on the size of your database.
[0] http://www.codesynthesis.com/products/odb/