W dniu 2011-12-28 16:37, Daniel Cremieux pisze:
Dear MVS experts ,
I am a bit surprised to find the MVS Programming Hiperbatch Guide in z/os 1.13
docs , as far as i know this feature uses expanded storage and this disappears
with 64 bits ?
(Also soem products still use hiperspaces and dataspaces i suppose that they
are now backed by virtual memory ? )
Hiperbatch is still supported, although I would call it moribound
because it's not being enhanced.
AFAIK Hiperbatch use Hiperspace which do not require expanded memory. In
the past it could use expanded memory, but it wasn't obligatory.
Both dataspaces and hiperspaces are kept for compatibility, both are
limited to 31-bits and both are rather being replaced by memory objects
in 64-bit.
BTW: 64-bit does not mean no expanded memory, z/VM still use expanded
memory. Only z/OS got rid of expanded memory support.
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Radoslaw Skorupka
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