The SAP pool buffers help interprocess communications of all SAP work processes from within an R/3 instance. These buffers are distributed among the shared memory segments of the operating system. These pools are dependent on the size and number of the shared memory segments provided by the operating system. As it can be somewhat laborious to set the profile parameters in the instance profile manually, this procedure has been automated.

The R/3 System detects the set of parameters, the shared memory pool requests. This set is compared to the parameters the system offers. In case of divergence, you can choose the set of parameters that the system will use.