" checkpoints are frequently occurring (1second apart). Consider increasing checkpoint_segements parameter".
The custom on these lists is to bottom or inline post.
This tends to appear when someone decide to write a load script of the form:
INSERT INTO tbl (cols) VALUES (...);
INSERT INTO tbl (cols) VALUES (...);
[repeat many, many, times]
(note the lack of BEGIN/END, single transaction help mitigate it somewhat)
David J.