SAP Extended Memory (EM)

 

SAP Extended Memory (EM):

SAP Extended memory (EM) is the core of SAP Memory Management. The majority of data for a 

user session (user context), which different work processes access when processing requests, is 

stored here. These are mainly dialog work processes since this is where most user interaction 

with the system is processed. You set the size of the EM in profile parameter 

em/initial_size_MB. As of the release of SAP NetWeaver 7.4, the roll area was removed. 

Extended memory (EM) is now the actual memory for the application data. For more 

information, see SAP Note 2085980. 

Reference:

1. help.sap.com 
2. SAP Notes 
3. Linkedin