You are a BIG GURU!!!!!!.
It has worked. I've followed the steps you have told me. I've installed it in a new virtual machine and it has worked.
This is what I've done:
1 - Download and install Oracle packages:
2- Set environment variables.
3- Create a symbolic link in $LD_LIBRARY_PATH
ln -s libclntsh.so.11.1 libclntsh.so
4- Add the Fedora-RedHat repository to pirut
5- Install next packages with pirut (thus, solving dependencies automatically)
6- Delete previous added Fedora-RedHat repository from Pirut.
Delete it to avoid new updates and get system unstable.
7- Install tora.
Many, many thanks