How run a script on host without internet?

Hello
I have script that it have to generate 10000 record and save it in database
I can open it in browser and it generate theirs and save in database
But if when codes is generating and adding to database,my internet is stoped or failed,so my script will stoped.
I need run this script in server but i cannot access to server
How do i run this script in server without affected internet on it?
My option is crobjob,is it good way?