Solution : https://service.sap.com/sap/support/notes/808607 (SAP Service marketplace login required)
Summary :
This SAP Note addresses memory management for SAP kernel versions as of release 6.40 on iSeries using PASE. It outlines the adaptation of Unix-like memory handling capabilities, avoiding previous AIX-specific restrictions. Key changes include teraspace-based memory types (roll, extended, heap, and paging), with definitions and allocation strategies updated. Shared memory pools are streamlined, making ipc/shm_psize parameters obsolete. The paging concept adjusts for abundant main memory, altering parameters for paging memory to suit variable system demands. Roll memory no longer utilizes a roll file, instead, dynamically managing allocation between extended memory and roll areas. Heap memory prioritizes sessions that require persistent, unshared memory spaces, defining scenarios for PRIV mode. Recommendations for memory parameter configurations are provided to optimize system operation and prevent potential runtime issues. Emphasis is placed on ensuring connectivity between various memory types and maintaining system stability and performance.
Key words :
ztta/roll_firstztta/roll_areaztta/roll_extensionem/initial_size_mbrdisp/pg_maxfsrdisp/pg_shmabap/heaplimitabap/heap_area_diaabap/heap_area_nondiaabap/heap_area_total 3, -dialog work processabap/heap_area_total heap quota, changed sap profile parameter explanationztta/roll_first = 1, dialog work processabap/heap_area_nondia heap quota, update blockcurrent=32 + blockchange=1 > maxblockinsys=32 [esuxshm2, complete sap application serverthe memory requirement, application serverabap/heap_area_dia heap quota, application serverrdisp/roll_shm roll memory, application serverrdisp/roll_maxfs roll memory, es/shm_max_priv_segs es/shm_seg_size specifies
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