Iterating a ResultSet using the JDBC for Oracle takes a lot of time about 16s?

Question

while( result_set.next() )
{
  ...
}

I have use System.nanoTime() and calculated the time, for each iteration the time taken is in mil

Answer 1

Try to change ResultSet fetch size. By default, Oracle JDBC driver receives the result set only 10 rows at a time from the database cursor. It may not significantly improve performance but there arent many other options to make driver work faster.