Using ServletOutputStream to write very large files in a Java servlet without memory issues

Question

I am using IBM Websphere Application Server v6 and Java 1.4 and am trying to write large CSV files to the ServletOutputStream for a user to download. Files are

Answer 1

So, following your scenario, shouldn't you been flush(ing) inside that while loop (on every iteration), instead of outside of it? I would try that, with a bit larger buffer though.