SAP Note 12948 - Significance of the roll area parameters

Component : Memory Management - ABAP Runtime Environment

Solution : https://service.sap.com/sap/support/notes/12948 (SAP Service marketplace login required)

Summary :
The SAP Note provides detailed technical explanations regarding the roll area parameters and their impact on system performance. It emphasizes that these profile parameters are crucial and should only be modified by experts due to the risk of rendering the system unusable. The note outlines three main parameters: ztta/roll_area, rdisp/ROLL_MAXFS, and rdisp/ROLL_SHM, detailing their typical values, default settings, and specific use cases. It also describes the new memory management system introduced in Release 3.0, explaining how memory resources are utilized by dialog, batch, and update work processes. For further information, the note refers to SAP Notes 31395, 33395, and 33576.

Key words :
instance /usr/sap/<sid>/<instance>/data/rollflnn, work process-specific roll area, system parameter ztta/roll_area defines, increase parameter ztta/short_area, withthe parameter rdisp/roll_maxfs, initial roll area, symptom key word, additional key words, early watch service, 5000000when large volumes

Related Notes :

563688SYSTEM_NO_ROLL during the file upload
31395System parameters: Defined where? Displayed how?