ca.portal.admin

Cache Memory

Discussion created by ca.portal.admin on Sep 8, 2008
Latest reply on Sep 9, 2008 by ca.portal.admin
=20
Is anyone using file cache in memory for database files? How much memory
are you using? My region card is 300M for CV. It looks like the amount
of memory available is the MEMLIMIT parm in the SYS1.PARMLIB for Z/os
1.9, I'm running 16.0 SP4.

Thanks,
Steve Harmeson
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Re: Cache Memory
"Steve, we have been using dataspaces under IDMS R15 and R16 for some
time now. We use dataspaces for multiple DB files with a total size of
about 3.6 Gb.

We started relatively small and added files over time. We watched
paging at each increment and kept adding files until paging started to
be an issue.

The REGION parameter for this system is the time-honored ""0M"" (zero M).


As long as you have lots of real memory to back up the virtual storage
used, it works well.


Hal Govan
Senior Database Administrator
Reed Elsevier - Technology Services
harold.govan@reedelsevier.com
Phone: (937) 865-7820

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