I've never tried to install the SDC onto an OpenSUSE box. It's never been tested to my knowledge nor is it officially supported.
That said, you need to link the actual libtinfo.so.5.8 file, not libncurses.so.5.8.
Try this instead:
ln -s /lib64/libtinfo.so.5.8 /lib64/libtinfo.so.5
If you don't have the libtinfo.so.5.8, that is provided in the libncurses5 package.
See if that helps