memory alignment boundary

memory alignment boundary determines the memory address boundary on which data caches are aligned.

Summary Information

Default value

Logical page size

Range of values

2048a – 16384 (the minimum determined by server’s logical page size)



Display level


Required role

System administrator

Configuration group

Cache Manager

Some machines perform I/O more efficiently when structures are aligned on a particular memory address boundary. To preserve this alignment, values for memory alignment boundary should always be powers of two between the logical page size and 2048K.

Note: The memory alignment boundary parameter is included for support of certain hardware platforms. Do not modify it unless you are instructed to do so by SAP Technical Support.