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Home -> Community -> Usenet -> c.d.o.server -> Re: Kernel parameter recommendations for HP-UX 11.11 in regard to SGA size
>>> Just wondering how others have configured the following parameters >>> bufpages >>> dbc_max_pct >>> dbc_min_pct >>> nbuf >>> in regards to system buffer cache? >> You need to configure the databas filesystems for directio, as Oracle >> already has a buffer cache. >> The above parameters are referring to the *O/S* buffer cache, which >> you shouldn't use. >> You need to read up the *platform specific* documentation for HP-UX >> available onhttp://otn.oracle.com(tahiti.oracle.com only has generic >> docs)
Hence why I'm upping it to 256Mb
I'll try and get that hit ratio stuff from sar to check things out.
Also, I think if you set the (OS) buffer cache too high it doesn't
actually use that figure as you can see the memory available with
swapinfo -mt
however, I haven't fully worked out how it calculates that figure yet.
Received on Wed Jun 06 2007 - 16:10:44 CDT