Well, this is a show stopper for db-4.6.18:

$ sudo /usr/lib/rpm/db_dump Packages-ORIG | sudo /usr/lib/rpm/4.5/ 
db_load Packages
db_dump: Packages-ORIG: unsupported hash version: 9
db_dump: open: Packages-ORIG: Invalid argument

That's db-4.6.18 db_dump that cannot read hash version 9 (or I've  
misbuilt somehow,
more than likely ...).

Digging ...

73 de Jeff