That is correct.
And if you retrieve enough additional entries you may very well find that
bringing in the additional entries causes the changed entries to be
written to auxiliary storage in order to "make room" in main storage for
the newly retrieved entries!
For completeness I will also point out that I simplified a few things in
my earlier response :-) The system, in it's "spare time", can also write
out changed entries even when there is no demand for the memory pages to
bring in new data. Storage management on the system can be quite
sophisticated. But the main thing is -- you can force the change out
immediately/synchronously, or you can have the system do it "later" where
later is, well, later :) And "later" is difficult to quantify as there
are many variables involved.
Hope this helps,
Bruce Vining
AGlauser@xxxxxxxxxxxx
Sent by: midrange-l-bounces@xxxxxxxxxxxx
05/02/2007 07:18 AM
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Re: Speaking of APIs ....
Thanks Vern and Bruce.
Vern Hamberg wrote on 01/05/2007 21:26:31:
Auxiliary storage means DASD - disk. Synchronously means it is done
right away, as Bruce said.
So, does that mean that the option for immediate update (or not) does not
affect the retrieval of user index entries (short of power failures or
other problems with main memory)?
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