Dear Raul,
I cannot comment on the vagrant machine setup from the tutorial, but I have recently installed an OpenACS instance together with the Oracle driver and this worked fine (note that it was a Postgres OpenACS using the Oracle driver only to access some tables from a remote Oracle and no vagrant was involved).
Summarizing, these were the steps (on the machine running NaviServer):
* download basic and sdk from https://www.oracle.com/database/technologies/instant-client/linux-x86-64-downloads.html
* compile nsoracle located in the NaviServer scr folder following the instructions in the nsoracle README (see also the tutorial for pointers). Basically, you want to point the compiler to your basic and sdk installation from before.
It could be that the makefile does not find the basic and sdk installations and some massaging of the paths will do.
Hope this helps
