What is missing?

What do you mean? What program is generating "Has DB_File Perl module installed? Yes" and why doesn't it tell you?

I copied ...

I don't know much about chroot, but shouldn't you be able to include paths without copying files?

Did you forget to copy /usr/bin... and other $PATH s?

Did you use ldd on every .so to see what else you forgot to copy?

Having never used chroot before, I can't imagine it should be this much of a pita to setup chroot

I'd look for easychroot or some such to handle all the copying for me. IANAA (I am not an admin) so I wouldn't recommend any tutorial ^{$ $ $ $} although creating a chroot, then installing rpm/yum/apt-get inside the jail, and then installing everything you need all from inside the jail, seems like a "safe" approach