The two warnings are from Module::ScanDeps. The first is from pp_autolink, the second from pp as both scan the script. They can generally be ignored if the script starts up properly.
I am not sure what oci.dll is for, but if it is not in the system path then pp_autolink will not find it. If you know where it is then you can add it to the pp_autolink call using the --link argument with its full path. This will then be passed on to the pp call (which is also printed to the console if you want to copy it for later re-use without scanning the files using pp_autolink).
(If oci.dll it is an Oracle dll then maybe this stack overflow link is relevant. Perhaps one of the libraries your script is calling is adding its dir to the path at runtime and so pp_autolink cannot find it.)