> Now I remembered that you helped me with the last error, saying I
> cannot have two resultsets open with autocommit set to true, because
> of the JDBC spec.

Right.

> But I set autocommit to false, as you can see in the snippet, so I
> kept on looking and I found, that after the first loop of
> while(rs.next()) and while(rs2.next()) autocommit changes automaticly
> to true...

There cannot be "automatically"... autocommit is toggled only by
setAutoCommit() call. Please check your code again, and if you're still
convinced that that is not your code, please create a test case.

Roman