ARTICLE
Shared Objects - Restrictions
At present, the following restrictions apply for shared objects:
On 32-bit systems, only a limited amount of memory space is available
for storing shared objects, due to the restricted address space. For
this reason, shared objects can only be used on 32-bit systems under
certain conditions.
When data objects that are referenced using data references are stored,
there is also the restriction that the dynamic type cannot be created at
program runtime. A direct reference to data elements and table types
belonging to the ABAP Dictionary is possible however.
The memory consumption of shared objects in the shared memory cannot be
monitored with the Memory Inspector.
Memory bottlenecks can occur in the shared objects memory, but they can
be dealt with. The associated exception class is
CX_SHM_OUT_OF_MEMORY .
There is no memory restriction for logical areas, which generally
consist of several area instances. There are currently only memory
restrictions for individual area instances.
The lifetime of area instances cannot be bound to that of user sessions,
external sessions, or transactions. Area instances currently exist as
long as the application server instance.
Documentation extract taken from SAP system, � Copyright SAP AG. All rights reserved
