Memory Management on Linux

Use

For SAP on Linux two variants of memory management are available.

The required variant can be activated in the SAP instance profile parameter es/implementation.

MAP implementation (es/implementation=map)

The procedure is described in detail in SAP Note 386605 .

Note

The MAP implementation was implemented for 32-bit systems. For 64-bit systems the address space is large enough for all user contexts.
Standard implementation (es/implementation=std)

With this variant memory management of an SAP system on Linux is the same as on classical UNIX systems. Here, all user contexts in the system are mapped to the adress space, which means that this variant is suitable only for 64 bit systems.

For more information, see SAP Note 941735 .