I wanted to extend UnitOfWork2 class to override both versions of Commit but found that only one of the Commit methods is overridable. Is there a problem in exposing both Commit methods as overridable (at least for inheriting classes)

I guess that the already overridable method is in more generalized form, so you might use it instead of the other one.

the non-overridable version calls the overridable version.

I thought so also, and passing false as the second parameter.

Thanks guys...