A row is inserted in a database table on a page having a first space reserved for inserting rows of the database table. A second space is reserved for adding data to the inserted row, wherein reserving the second space includes reserving the second space on the page responsive to inserting the row, so that the amount of space reserved for adding data to inserted rows grows as more rows are inserted. The page is marked full for the second space independently of whether the first space is full for inserting new rows. Data is added to rows on the page, responsive to detecting that the second space is full, by adding the data to one or more new pages, even though rows may still be inserted on the page using any remaining room in the first space on the page.