Solution : https://service.sap.com/sap/support/notes/425207 (SAP Service marketplace login required)
Summary :
The SAP Note clarifies the maximum parameter values for SAP memory management across various kernel releases. It details settings for parameters such as ztta/roll_extension, abap/heap_area_dia, and ES/SHM_USER_COUNT, specifying limits based on 32-bit and 64-bit systems. Differences in parameter limits are outlined for releases below 46D, 46D, and major releases 640, 700, and 710. Each release consists of specific boundaries for memory-related parameters which are critical for system performance and stability, ensuring operations adhere to optimal configurations. The note highlights the evolution in parameter setting capabilities, transitioning from stringent limits in older versions to more flexible settings in newer releases.
Key words :
ztta/roll_extension <2gb <2gbabap/heap_area_total <2gb <2gb 0 = unlimited remark 5, ztta/roll_extension <2gb unlimitedabap/heap_area_total 64-bit float, es/shm_max_priv_segs solution current parameter settings, dia <2gb <2gb 0 = unlimited remark 5, dia <2gb <2gb 0 = 1 terabyte remarks 5, ztta/roll_extension <2gb <4gb remark 5, abap/heap_area_total 64-bit float, 32-bit 64-bit releases lower, /3 8000 os 4096 os unlimitedes/shm_user_count, os 4096 os unlimitedes/shm_user_count
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923610 | Memory parameter recommendations for banking systems |
790099 | R/3 Parameter Settings for Unicode conversion |
146289 | Parameter Recommendations for 64-Bit SAP Kernel |
118546 | esSHMAllocateBlock returned 16 under AIX |