How does the report RSMEMORY works ?

Hi SAPtechies,

In one of our ECC server , we face memory issues frequently , and we will try to adjust the memory temporarily through the report RSMEMORY .

I used to monitor the memory consumption through ST02, and I start realizing that memory configured to extendted memory nor heap memory does not

change with rsmemory report , so how does this works and where it really changes the memory related to SAP .