With Windows 64 bit the address space restrictions of 3Gb on 32 bit Windows no longer apply. The boot.ini file on the C drive is no longer used the /3Gb and /pae swiches are not relevant to 64 bit Windows. The Windows page file needs to be a least 20Gb it also depends on the RAM you use and the numer of instance on the host note 1518419 The basis for zero administration memory management on Windows is the dynamically self-extending extended memory.The extended memory is initially set to the size of the profileparameter PHYS_MEMSIZE ([PM]). PHYS_MEMSIZE is not a limit for extended memory on Windows the limit is the parameter em/max_size_MB normally set to 100Gb. If you use parameter PHYS_MEMSIZE in the instance profile then these parameters are calculated automatically .
ztta/roll_first; ztta/roll_area; ztta/roll_extension;
However if any of these parameters are set in the instance profile then the instance profile value is used.
Memory Management under Windows notes….