FW: Java Memory Issue while Loading Postgres library

Dear All Experts,

We have a java exe making a call to a postgres function. This postgres
function internally makes a call to a dll (which is written using
Postgres extended C).

Now the issue is that, when we make a call to this dll, it consumes a
lot of memory and this memory is getting consumed from the heap space of
the original java process causing an out of memory exception in Java.

Is this a known issue. Do we have a way to keep these processes disjoint
and not eat up heap space of the original process?

Please provide your suggestions/advises on the same.

Sorry missed few information.

I am using PostgreSQL 8.3.5 on Windows XP with 4GB of RAM and 160GB of
hard drive with Core 2 Duo processor CPU @ 6300 1.86 GHz.