Solution : https://service.sap.com/sap/support/notes/1121904 (SAP Service marketplace login required)
Summary :
SAP Note on Aix paging space optimization highlights changes in paging space allocation policies from Late Page Space Allocation (LPSA) to Deferred Page Space Allocation (DPSA) post-AIX 4.3.2 upgrade, influencing the management strategies of paging spaces. Given the vastly superior access speeds of real memory over disk-based paging, the recommendation is to configure sufficient real memory to minimize reliance on paging space. Nonetheless, where paging is unavoidable, employing a dual strategy of assessment and monitoring can ascertain the requisite initial and ongoing sizes of paging space. The note provides guidelines on starting values and incremental adjustments based on system performance indicators like the SAP transaction ST06N for navigating between minimal and defensive allocations.
Key words :
terms swap signal 33 lpsa dpsa paging reason, st06n->history->swap size->percentage_used, paging space garbage collection feature, monitor actual paging space usage, default paging space policy changed, possibly oversized initial paging space, database installation guide 10g release 2, average paging space usage increase, default paging space policy, aix 5l based systems
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