Re: different service names on Standby
- From: Seth Miller <sethmiller.sm@xxxxxxxxx>
- To: kibeha@xxxxxxxxx
- Date: Thu, 28 Aug 2014 06:06:25 -0500
Hemant,
I would in fact recommend defining different service names in your standby
databases, if for no other reason then you can easily identify to which
database you are connected at any given time. Another suggestion would be
to name the services in such a way as to identify the location, purpose and
type of the service, such as "london_oltp_oci". Including the type would
only be relevant if you are defining multiple services for different
connection types since they often require different settings for failover.
I always encourage DBAs to keep in mind that standby systems are separate
databases and they should be treated as such to minimize the chances of
making changes or connections to the wrong system accidentally. Therefore,
I recommend a different SID, different services names and a descriptive db
unique name (i.e. orcl_newyork and orcl_london rather than orcl and
orcl_standby).
Seth Miller
On Thu, Aug 28, 2014 at 1:05 AM, Kim Berg Hansen <kibeha@xxxxxxxxx> wrote:
> We do have a different service name on the physical standby. The reason is
> it is in "snapshot standby mode" during the day.
>
> Our setup har three servers: db1, db2, db3
> And three service names: dbP ("P"roduction), dbR ("R"eadonly), dbS
> ("S"andbox)
> Normally dbP runs on db1, dbR on db2 and dbS on db3
>
> One primary and two dataguard:
>
> Service dbP is the primary.
> Service dbR is Active DataGuard - failover as well as some queries for
> reporting and extracting for dw
> Service dbS is at 1AM switched to Physical Standby and at 5AM switched to
> Snapshot Standby - test and training during the day, "refreshed" to a clone
> of production during the night
>
>
> But a DataGuard server that is Physical Standby all the time? I can't
> offhand think of a reason for seperate service name? Unless for management
> purposes?
>
>
> Regards
>
>
> Kim Berg Hansen
>
> http://dspsd.blogspot.com
> kibeha@xxxxxxxxx
> @kibeha
>
>
>
>
> On Thu, Aug 28, 2014 at 5:38 AM, Chitale, Hemant K <
> Hemant-K.Chitale@xxxxxx> wrote:
>
>> Just curious here ....
>>
>> Other than for Active DataGuard ...
>>
>> Would you define **different** service names on a Physical Standby ?
>> (i.e. service names that are not defined on the Primary).
>>
>> Can you ? Why would you ?
>>
>> (Active DataGuard I can understand : Useful to use a different service
>> name for Query sessions).
>>
>> Hemant K Chitale
>>
>>
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