Filesystem is full

I got this error:Filesystem is full.
Capacity is 105%, Available is -12346.
Usually when I got this problem, I got to
/ directory remove the file call SH.Core if
it exits. But this time I don’t see that
sh.core.

I am not a UNIX guy. I tried to get Support.
But now is after 5:PM and it weekend.
Can anyone help Please.
Thank you very much