Re: RAID 1 & Oracle problems?

From: Dave Hau <davehau_nospam_123_at_nospam_netscape.net>
Date: Fri, 20 Jun 2003 21:53:27 GMT
Message-ID: <3EF38256.90203@nospam_netscape.net>

Dave Hau wrote:
>
>
> Sybrand Bakker wrote:
>

>> On Fri, 20 Jun 2003 19:09:57 GMT, Dave Hau
>> <davehau_nospam_123_at_nospam_netscape.net> wrote:
>>
>>
>>> The solution is to turn on dirty region logging in the volume manager.
>>>
>>> Cheers,
>>
>>
>>
>>
>> The solution is not to rely on hardware mirroring for critical files,
>> which is actually what Oracle advises. So always software mirror your
>> redolog files, and the situation you describe isn't likely going to
>> happen.

>
>
> Software mirroring has the same risk of mirror out of sync in case of
> power outage. You still need to enable dirty region logging.

Never mind. I see you were talking about multiplexed redo logs in Oracle, not software raid on the OS level.

• Dave

>
> Cheers,
> Dave
>
>
>
>
>

>>
>>
>> Sybrand Bakker, Senior Oracle DBA
>>
>> To reply remove -verwijderdit from my e-mail address

>
>
Received on Fri Jun 20 2003 - 16:53:27 CDT