Re: 10g RAC without vendor clusterware
- From: Mogens Nørrgaard <mln@xxxxxxxxxxxx>
- To: qnxodba@xxxxxxxxx
- Date: Wed, 16 Feb 2005 08:11:41 +0100
mhthomas wrote:
>Hi,
>
>in-line
>
>On Thu, 03 Feb 2005 12:09:45 +0100, Koen Van Langenhove
><Koen.Van_Langenhove@xxxxxxxxxxx> wrote:
>
>
>>Hi Alex,
>>looks like you're a little pessimistic about the ASM instance. Would
>>you care telling us why ? It's just another instance, why would be it be
>>less reliable than the 'real' instances ? Apart from the fact that's it
>>is a relatively new feature of course, because the same goes for any
>>other new major version of a regular volume manager.
>>
>>
>>
>
>How do you like moving a db from ASM to non-ASM or vice-versa? There
>are many reasons to move one back and forth so I won't specify all the
>cases, but its not fun.
>
>How about the posting that ASMLib can not handle DW (>64K) I/O that
>was posted to the list a couple days ago? My point here is just wait
>and see how long until oracle fixes this one (in my opinion critical -
>show stopper) bug. If its long, you can tell Oracle has no priority
>(e.g. $$income) for ASM. ;-)
>
>How come (in my opionion, almost) no-one (except one popular Oracle
>employee) is consistently preaching the greatness of ASM? One guy?
>
>BTW, what is your redundant (no single point failure) strategy for ASM?
>
>I'm just curious because one of my clients has a single NetApp and
>RAC/ASM and the NetApp (and ASM) is the single point of failure until
>they buy a second NetApp. Of course, if the NetApp (or ASM) fails then
>they have data loss because they have no access to the files. I know,
>I know, not a great design, but its easy to get over-confident when it
>comes to these things. I prefer to call someone 'cautious' rather than
>'pessisimistic/unemployed/etc'.
>
>HTH
>
>Regards,
>
>Mike
>--
>//www.freelists.org/webpage/oracle-l
>
>
>
>
ASM is a pre-requisite for the free SE RAC, and we've had several issues
with that here. Not sure why they made it a requisite for the free SE
RAC, but not for the non-free EE RAC, but they did.
I think it's a rather clever observation to watch how much effort Oracle
put into fixing ASM bugs. It's often an indication of the internal
prorities.
Oracle's idea with ASM is apparently to kill off Veritas (according to
some of my sources internally, others disagree).
Mogens
--
//www.freelists.org/webpage/oracle-l
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