If have a file size limit exceed problem with my database and found out now, that my kernel supports 64-bit, but not so my c-library...

I think so, because I can create files up to many gigs in my filesystem, but if I try use some c-methods like fopen, there comes the errror code 27 back, which identifies the file size limit exceeded problem.

This makes me believe that I have to change somehow my C-Library...
anyone has an idea how to do this?
Maybe I have just to tell the C-library to use some other calls???
Maybe changing some variables or smething like this?

I'm really new to this...

thx for any help in advance...