Re: Raw drives
Date: 1996/06/12
Message-ID: <4pnjjt$18u_at_unogate.unocal.com>#1/1
blape_at_utk.edu (Bryon Lape) wrote:
> I am wondering if the newest version of Oracle for Unix (Solaris 2.5
>in this case) needs raw disk drives or can it write to RAID-5s? Also, can it
>take full advantage of a 4 processor system (Sun SPARC 2000E)?
>bryon
>--
>----------------------------------------------------------------------------
>Without the first step, no journey, no matter how long or short, can start
>and in no way end.
>Bryon Lape
>email: blape_at_utk.edu WWW:http://aztec.lib.utk.edu/~bryon
no. yes. yes.
it doesn't need raw drives, but can use them. ithink the only case
raw is required is when running parallel server. there's a lot of
argument over raw vs. RAID5. the main thing is you lose your file
system caching when you go to raw - which can hurt. if you set up
RAID5 properly, it'll scream and give you much less headaches in the
long run (IMHO).
yes oracle will use all the processors available. just _don't_ screw with the 'cpu_count' instance parameter. also advise setting 'log_simultaneous_copies' to twice your cpu count and setting the 'log_small_entry_max_size' to something low (32-0). also, on solaris, make sure the 'use_readv' parameter is set to 'true'!!!
happy motoring,
douglas a cummins
dacummins_at_delphi.com
delphi consulting services, inc.
:->
Received on Wed Jun 12 1996 - 00:00:00 CEST