Re: oracle 11g dataguard on Netapps
- From: LS Cheng <exriscer@xxxxxxxxx>
- To: Joan Hsieh <joan.hsieh@xxxxxxxxx>
- Date: Thu, 12 Feb 2009 23:11:06 +0100
I am not sure what is your SLA but in UNIX or Linux you can backup
ORACLE_HOME online, a simple tar command.
But even if you want to backup the software offline it probably takes 10
minutes or less so I am not sure if snapshot is giving you any benefits at
all.
Thanks
--
LSC
On Thu, Feb 12, 2009 at 4:45 PM, Joan Hsieh <joan.hsieh@xxxxxxxxx> wrote:
> Hi LS,
>
> Thank you, I am just wandering the snapshots on ORACLE HOME should it be
> the benefit when we apply patch or upgrade the oracle? So we can skip the
> backup of oracle home and fast of restoring it in case it needed?
>
> I am not sure it is worth to do it or not? We have enough space on both
> local and NetApps. Just curious to know.
>
> Joan
>
> LS Cheng wrote:
>
> Hi
>>
>> You can install the binaries in NetApp volumes or local disk, it is up to
>> you, but if you have plenty of spaces in your local disks (now days 100 of
>> GB is not unusual) I dont see why you want to install them in a NAS device,
>> I dont see any advantage.
>>
>> Again I dont have experience with NetApp snapshots but I have used EMC
>> Snapview which should be similar technology, you put your database in backup
>> mode, take the snap and end the backup mode. More or less there are steps to
>> get two controlfile copies and archived logs, probably googling can get you
>> detail steps.
>>
>> Thanks
>>
>> --
>> LSC
>>
>>
>> On Wed, Feb 11, 2009 at 9:07 PM, Joan Hsieh <joan.hsieh@xxxxxxxxx<mailto:
>> joan.hsieh@xxxxxxxxx>> wrote:
>>
>> Hi Matt,
>>
>> Thanks for your prompt reply, what is the disadvantage to install
>> the binary on Netapps giving that we have 250gb storage? I am
>> thinking if primary and standby shared a same oracle home, it will
>> save time for patching or upgrading the binary, besides, it also can
>> take the benefit of the snapshots????
>>
>> I just know little about NetApps snapshots, how it work for you? do
>> you use it for database recovery? Do you need to script the database
>> in hot backup mode in order to that? That's why I thought we could
>> benefit from the shared oracle home.
>>
>>
>> Thanks,
>>
>> Joan
>>
>>
>> Matthew Zito wrote:
>>
>> I would recommend keeping your binary installs on the local
>> filesystem
>> of your servers - NetApp is expensive storage, and it's useful
>> to keep
>> that install local.
>>
>> As far as separating volumes, you have to remember that on NetApp,
>> having two separate volumes does not necessarily automatically
>> imply
>> that they are on different physical spindles. On NetApp you have
>> something called an "aggregate", which is basically a RAID group
>> (or
>> multiple raid groups, potentially). Out of this aggregate,
>> volumes are
>> carved up, sharing the same physical spindles. The major
>> advantage of
>> having multiple volumes from the same aggregate is
>> administrative - you
>> can make sure that a bad actor on one volume doesn't fill up the
>> whole
>> filer.
>>
>> Also, keep in mind that since NetApp uses a copy-on-write
>> filesystem, it
>> can be useful to share a datafile and its index on the same
>> aggregate,
>> as NetApp will make sure those writes are sequential.
>>
>> For redundancy's sake, if you can spare the disk space, keep at
>> least
>> one set of redo logs, controlfiles, etc. on a separate
>> aggregate. That
>> will help protect you against a multiple disk failure scenario.
>> Also,
>> familiarize yourself with NetApp snapshots, they're very useful.
>>
>> Thanks,
>> Matt
>>
>> -----Original Message-----
>> From: oracle-l-bounce@xxxxxxxxxxxxx
>> <mailto:oracle-l-bounce@xxxxxxxxxxxxx>
>> [mailto:oracle-l-bounce@xxxxxxxxxxxxx
>> <mailto:oracle-l-bounce@xxxxxxxxxxxxx>] On Behalf Of Joan Hsieh
>> Sent: Wednesday, February 11, 2009 2:49 PM
>> To: oracle_l
>> Subject: oracle 11g dataguard on Netapps
>>
>> Hi listers,
>>
>> Our new project is creating a 11g dataguard environment on
>> NetApps storage. I have the following questions like to ask;
>>
>> 1. What is the best practice of volume configuration? should we
>> configure single volume for data, single volume for redo?
>>
>> 2. As oracle home, is it better to install on the local file
>> system or on NetApps? If it is best on Netapps, then should the
>> Oracle home be shared with primary and standby sites? Our
>> primary and standby are on separate servers.
>>
>> Thanks,
>>
>> Joan
>> --
>> //www.freelists.org/webpage/oracle-l
>>
>>
>> --
>> //www.freelists.org/webpage/oracle-l
>>
>>
>>
>>
>
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