I'm looking for some example, how is possible connect to Oracle with combination Objective-C and OCI. Is anywise something like this possible in Objective-C ? (btw. i know, that there is feasible solution connect to Oracle with JDBC or ODBC, but if is it possible, i prefer native library).
There are native OCI libs available for MacOSX.
They include OCI(C) and OCCI(C++) interfaces. (libocci.so.*)
From Objective C perspective you might look for examples how to integrate Objective C with C++ - called Objective C++ - and plain C as well.
It is pretty straight forward. I don't know of any common Objective C Wrapper, although this might be interesting for a Core Data layer.