>> Does anybody know when the memory which is reserved for a
>> ResultSet is released?

In theory it should be released when the result set object is closed. I just
checked the code, it seems that this does not happen (the most noticable
effect it has in auto-commit mode). Though when you close the statement or
connection, all memory should be released.

Can you please fill the bug report and post your code, so this issue is
checked and tested before the next release.

Roman