Database Import Stuck at 40, 80%

Hi,

I created a old website backup.
I want to upload this website in other domain.

I have tried importing backup in all possible ways, but it always gets stuck at database restore.
I can see my files using a link from your domain.
All memory limit and upload size are fine.

I have also tried restoring via backup option in plugin, it also getting stuck on the same.
What should I do ?