Memory Management in SAP
Memory allocation
- User submits request.
- Dispatcher assigns the workprocess.
- Workprocess requires memory to roll In the user context
- Workprocess gets memory from local memory which is defined in the parameter Ztta/roll_area it gets only a part of it which is defined by perameter Ztta/roll_first(20KB)
- If the allocated memory is not sufficient then it gets allocated from extended memory Ztta/roll_extension.
- If that is also not sufficient then it uses the remaining ROLL Area.
- If that is also not sufficant then it uses HEAP/PRIVATE Memory and Workprocess goes into PRIVATE Mode.
- Heap memory is defined by the parameter
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