Issue with insufficient swap or memory space

Hi,

When I execute one of my shellscript I am getting the below mentioned error message .This application takes 2input files which have the records counts 26463 and 1178046

exec(2): insufficient swap or memory available.
exec(2): insufficient swap or memory available.
exec(2): insufficient swap or memory available.
exec(2): insufficient swap or memory available.
exec(2): insufficient swap or memory available.
exec(2): insufficient swap or memory available.
exec(2): insufficient swap or memory available.
exec(2): insufficient swap or memory available.
Case JUNE_TEST finished Thu Sep 24 02:10:49 CDT 2009!

I have zipped most of the files in my directory.If anybody knows how to resolve this issue please help me.

Thanks in advance

check if /tmp is full
df -k /tmp

I checked it.It shows like this
/tmp (/dev/vg00/lvol6 ) : 2093328 total allocated Kb
516664 free allocated Kb
1576664 used allocated Kb
75 % allocation used