JM ,
check metalink following metalink note ,
Note:15566.1
Regards
RS
--- "Miller, Jay" <JayMiller_at_TDWaterhouse.com> wrote:
> Hi all,
>
> We had gotten some extra memory for our production
> server and I was trying
> to increase our buffer cache again (I was leery of
> doing it all at once so I
> just doubled it the first time). I got a
> ORA-27123: unable to attach to shared memory segment
> with my first try (it worked after I reduced the
> buffer cache a bit) and I'm
> trying to figure out why.
>
> Total memory on the machine is 4Gig.
>
> shmmax=2048000000 (2000M)
>
> 4K Block size
>
> I was able to start the database with a
> db_block_buffers of 350000 but not
> of 400000.
>
> Current SGA:
> NAME VALUE
> -------------------- ----------
> Fixed Size 47296
> Variable Size 248659968
> Database Buffers 1433600000
> Redo Buffers 1040384
>
> This gives a total of 1605M which should leave 295M
> still available. An
> extra 50000 blocks is only 195M. Is there something
> other than the total in
> v$sga that counts towards the shmmax? I can't find
> anything in my Oracle8 &
> Unix Performance Tuning book.
>
> Thanks for any guidance!
>
> Jay Miller
> --
> Please see the official ORACLE-L FAQ:
> http://www.orafaq.com
> --
> Author: Miller, Jay
> INET: JayMiller_at_TDWaterhouse.com
>
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--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author: Sakthi , Raj
INET: rajan_sakthi_at_yahoo.com
Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
San Diego, California -- Public Internet access / Mailing Lists
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Received on Tue May 29 2001 - 13:16:58 CDT
