Effects of ascending inserts

You can set ascending inserts mode for a table, so that pages are split at the point of the inserted row rather than in the middle of the page. Starting from the original table shown in Figure 2-2, the insertion of “A,4” results in a split at the insertion point, with the remaining rows on the page moving to a newly allocated page, as shown in Figure 2-6.

Figure 2-6: First insert with ascending inserts mode

An insert causes a page split, causing page 1129 to be inserted between pages 1107 and 1009. Page 1129 contains row B1.

Inserting “A,5” causes a new page to be allocated, as shown in Figure 2-7.

Figure 2-7: Additional ascending insert causes a page allocation

Additional inserts cause page 1134 to be inserted between page 1007 and page 1129. Page 1134 contains row A5.

Adding “A,6”, “A,7”, and “A,8” fills the new page, as shown in Figure 2-8.

Figure 2-8: Additional inserts fill the new page

Image showing rows A6, A7, and A8 added to page 1134.