AW: kernel bug

Hi Arun,

Sorry, but we filed a bug...with both parties, Novell AND
Oracle.
We escalated this case at Novell, because it's a kernel
bug...no change for 
the last 4-6 weeks.
But...as you see...no solution after about 3 months...

I took a deep look into the kernel-code, espacially the part
of the bug in 
aio.c
As far as i see, it looks like a list-corruption of the list
of outstanding 
io-requests.
So i don't think that it is driver-specific...it looks like
a general bug.

That it is working for some customers: it depends on the
duration and number 
of parallel requests if it happens or not...and these
parameter determine 
only the timeline, when it is occuring.

Bye
    Frank

----- Original Message ----- 
From: "Arun Singh" <Arun.Singhnovell.com>
To: "'SuSE MailingList'" <suse-oraclesuse.com>
Sent: Monday, December 18, 2006 7:13 PM
Subject: Re: AW: [suse-oracle] kernel bug


Hi Frank,

This patch has fixed/worked for some customers (not all). I
will highly 
recommend to file bug as this will help to raise severity of
this bug. This 
is a serious kernel AIO bug and only workaround at this time
is to disable 
AIO (as you mentioned).

Regards,
Arun

<frank.westheiderwestheider.de> wrote:
> Hi!
>
> The patch is not helping.
> We are currently running 2.6.5-7.282.PTF.165140-smp
>
> We already tried this...opened a TAR with Oracle,
openend an issue with
> Novell...got 2 fixes from Novell, but both are not
helping around the bug.
> The database crashes after approx. 1 week of heavy load
and you have to
> restart the machine to free the ipc-resources.
>
> After several attempts to speed up Novell fixing this
issue...we gave up 
> and
> turned off Async-IO. Now we're hoping for the next
service-pack to fix 
> this
> issue.
>
> Sad...but Novell was not really helping us....they are
currently only
> stealing time and hoping, that we close the case and
work without 
> async-io.
>
> Bye
>   Frank
>
> -----Ursprüngliche Nachricht-----
> Von: Arun Singh [mailto:Arun.Singhnovell.com]
> Gesendet: Montag, 18. Dezember 2006 17:03
> An: SuSE MailingList
> Betreff: Re: [suse-oracle] kernel bug
>
> Hi Toni,
>
> <Anton.Dischnermed.uni-muenchen.de> wrote:
>> an advice for Oracle 9.x was to
>>
>>  >Correct procedure will be upgrade to latest
kernel (.282) and ask
>
>> Novell
>>  >Tech support to provide a fix (PTF) for this
problem.
>>
>> Is this the way for Oracle 10.1.0.5 too?
>>
>> We are running kernel 2.6.5-7.257
>
> Yes, Please apply latest kernel which is .282 and file
bug with NTS, If
> it doesn't help.
>
> Regards,
> Arun
>
>
>





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