Solution : https://service.sap.com/sap/support/notes/1048686 (SAP Service marketplace login required)
Summary :
This SAP Note emphasizes the optimization of various AIX settings to enhance SAP application performance on AIX systems. Key recommendations include adjusting the number of open files and sockets to 32,000, setting the maximum user processes to at least 1024, and adopting specific Virtual Memory Manager (VMM) settings as per Note 973227. It is crucial to adjust memory settings related to ES/TABLE and ES/SHM_SEGS as detailed in Note 856848 and to ensure correct I/O subsystem performances by setting minpout and maxpout values appropriately to prevent false failovers in cluster environments. Moreover, user-specific limits and paging space recommendations are directed to specific Notes for detailed guidance, and access permissions for /etc/environment must ensure proper environment variable configurations for SAP instances.
Key words :
disk heart-beat errors occur, delayed disk heart-beat, prftungd/doc/prftungd/disk_io_pacing, user <sid>adm receives, prevent io bottlenecks caused, disk heart-beat performance, minpout=4096maxpout=8193this corresponds, disk heart-beat, commandlsattr -el sys0and, io performanceto ensure
Related Notes :
| 1157425 | Determining optimum number of AIO server processes |
| 856848 | AIX Extended Memory Disclaiming |