I have 190GB's free so I have plenty of space. I was just curious what that file was. No reason to disable it. Thanks...No - do not delete this if the disk it is on is your system disk. It means you've run out of memory and the OS has to temporarily some of it on disk. If you need the disk space, you can disable swapping. Or, after a reboot, this file should be deleted until such time that you run out of memory.
You can use Activity Monitor to monitor your memory - maybe there's an app that's taking a lot of it.