Re: Fencing Cache in Disk Array for Oracle

Hi

I dont know how to do that but is it a good idea to assign another cache layer to Oracle or better get a bigger SGA? I have heard all sort of opinions...

Thanks

--
LSC


On 8/4/07, Binh Pham <binhpham15_at_hotmail.com> wrote:


>

>    I'm currently working on a project that involves a new HP XP12000 Disk

> Array.  The newly acquired array would have 240G of cache on the array that

> allows data to be cached between the physical disks and the servers.  This

> model allows an amount of cache to be dedicated (fenced) to a specific host,

> in this case, the production server therefore other non-production related

> activities can pollute the production cache.  The rest of the cache can be

> shared among the rest of the non-production servers.

>

> My question is that how much cache should be allocated to ensure top

> performance in terms of IO for the production server?  I'm not comfortable

> with throwing out a number and say that it is good.  What I'm looking for is

> some researchable facts that back up the number (for example, something that

> I can mine from statspacks or similar that can be used to determine this

> number).

>

> Thanks for any input.

>

> Binh Pham

>

>

> ------------------------------

> Messenger Café — open for fun 24/7. Hot games, cool activities served

> daily. Visit now. <http://cafemessenger.com/?ocid=TXT_TAGLM_AugWLtagline>

>


--
http://www.freelists.org/webpage/oracle-l