Maybe I'm missing it, but I don't see information in the manual about exporting the Koha database or configuration. The feature was added by Bug 8268 and may have been missed because it requires editing of koha-conf.xml?
Looks like this has been missing for a long time! It may be in the wiki, but if that's the case a link from the Manual would still be useful. Hopefully someone with more technical knowledge than me will be able to document this ;-)