Re: 11gR2 Cascaded Standby with SYNC and ASYNC
- From: Ludovico Caldara <ludovico.caldara@xxxxxxxxx>
- To: Hemant-K.Chitale@xxxxxx
- Date: Wed, 27 Aug 2014 09:38:29 +0200
Hi Hemant,
12c has not only introduced Far Sync and real-time cascade, but also the
ability to manage cascading and cascaded databases through the Data Guard
Broker.
in 11gR2, you can have a cascaded standby database, but you have to manage
it without the broker. Moreover the only log transport mode available
between the cascading and cascaded database is ARCH.
Gavin Soorma has blogged about it one year ago, it is a good read:
http://gavinsoorma.com/2013/05/11g-data-guard-cascading-standby-database/
Best regards
--
Ludovico
2014-08-26 9:04 GMT+02:00 Chitale, Hemant K <Hemant-K.Chitale@xxxxxx>:
> 12c has introduced Far Sync as a “product”.
>
> In 11gR2 (and 10g) we could implement Cascaded Standby. I am looking for
> experiences / notes / case studies / gotchas with an 11gR2 architecture
> that has
>
> (a) “Near” Standby in SYNC mode [preferably running only the
> instance and processes without database files ?]
>
> (b) “Far” Standby in ASYNC mode [with the full database]
>
> Support Note 409013.1 has some information but not enough. I couldn’t
> find a Cascaded Standby described in Larry Carpenter’s 11g DataGuard
> Handbook (maybe I haven’t put in enough effort in the search).
>
> Hemant K Chitale
>
>
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