What is the difference between Oracle's thin drive and OCI drive? Which performance is better?

OCI: To install the Oracle client, the portability is slightly poor, the theoretical performance is better
THIN: Belongs to TYPE4, pure Java implementation, good portability, theoretical performance slightly worse

Recommendation: It is best to use thin driver bar, transplant better, use is also relatively standard, the problem is also few. As for performance, to tell the truth, on the 8i did not feel thin driver than the OCI slow, feel faster. However, there is no actual accurate test, nor dare to draw conclusions. Why, there is also the overhead of calling the local method, and the performance of the JDK is getting better, and the local method has a little discount on the cost of the call. In addition, the Oracle 8i itself is Java implementation, Java support is very good, with thin driver not appear slow but fast may have this reason.