RE: Standy database on standard edition
From: <Laimutis.Nedzinskas_at_seb.lt>
Date: Thu, 13 Jun 2013 16:03:05 +0300
Message-ID: <OF1A1A756E.F7CC149E-ONC2257B89.0046BBDA-C2257B89.0047B18C_at_seb.lt>
>On Behalf Of Jeremy Schneider
>but I think that
besides the process/workflow automation, you get another thing when you buy DG: LGWR mode instead of ARCH mode.
Date: Thu, 13 Jun 2013 16:03:05 +0300
Message-ID: <OF1A1A756E.F7CC149E-ONC2257B89.0046BBDA-C2257B89.0047B18C_at_seb.lt>
>On Behalf Of Jeremy Schneider
>but I think that
besides the process/workflow automation, you get another thing when you buy DG: LGWR mode instead of ARCH mode.
Basically yes, this is the most important feature, the synchronous log
change shipping.
Pure man can implement synchronous file system/storage replication for at
least redo logs but this solution gonna cost replication license.
Yet such thing as Maximum Availability mode requires to implement a
protocol which a) avoids split brain b) avoids data losss. That is doable
based on heart beat but again, low level access to synchronization protocol
is needed.
-- http://www.freelists.org/webpage/oracle-lReceived on Thu Jun 13 2013 - 15:03:05 CEST