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ABENSHM_RESTRICTIONS - SHM RESTRICTIONS

- Restrictions

Currently, the following restrictions apply to shared objects:

• When data objects referenced using data references are stored, there is a restriction that the dynamic type cannot have been created at program runtime. Direct references to data elements and table types in the ABAP Dictionary are, however, possible.

• Memory bottlenecks can occur in the shared objects memory, but can also be handled. The associated exception class is CX_SHM_OUT_OF_MEMORY.

• There is no memory restriction for logical areas, which generally consist of many area instances. There are currently only memory restrictions for individual area instances.

• The lifetime of area instances cannot be bound to the lifetime of user sessions, ABAP sessions, or transactions. Area instances currently exist as long as the .

Note

On 32-bit systems, only a limited amount of memory space is available for storing shared objects, due to the limited address space. For this reason, shared objects could only be used on 32-bit systems under certain conditions.