Best partitioning practice

I was wondering what everyone does when they run into the issues of rendering partitions. Say you generate 10 partitions and then realize that you really needed 20. You can’t just add 10 more partitions because of ‘01of10’ in the filename. So do you render out 10 more with new filenames, or do you over estimate on the number of partitions and then generate partition ranges until you have the right amount?

Both approaches are legit.
Usually, I try to overestimate the amount of partitions at least by a factor of 2.
But you can always render under a completely different filename since the PRT Loader does not really care what you are loading.
I wish we wouldn’t have included the ofNN_ part in the file name, but we wanted to be able to tell how many partitions to expect when loading any of them.