Free-space reservation for the catalog space and for user spaces

The free-space reservation feature makes it possible to specify the extent to which blocks in the catalog space or a user space are to be filled with data. Choosing a suitable setting for free-space reservation can improve performance during updates.

SESAM/SQL takes into consideration the reservation of free space when user data is loaded, when a table is imported with its user data, when partition boundaries are changed, when columns are added, changed or deleted and when column values are interchanged