Re: Oracle 10 Failover
Date: Wed, 10 Sep 2008 21:56:19 +0200
> I already explained Streams and CDC are asynchronous.
> This means transaction consistency is NOT guaranteed. Dataguard
> guarantees transaction consistency.
Do you mean that in case of a switch- or failover the running client
transaction is maintained?
AFAIK this is a RAC feature, isn't it?
Or what do you mean with transaction consistency?
> Are we discussing a distributed environment? As far as I am concerned
> we are discussing misusing distributed multi-directional technologies
> (replication, streams) to mimic unidirectional fallback technologies
OK, so you advice that one should use DG and not replication/streams to
create a failover/standby server?
DG needs the Oracle EE. What option do I have on SE?
> The main purpose of RAC is to protect servers (and to offer additional
> The main purpose of Dataguard is to protect disks.
> I do not see where distributed environment comes into play, nowhere
> you described you have a distributed environment.
Who uses for the failover/standby database the same server? So this should always be distributed (at least 2 servers). Or do you mean with distributed different locations?
My use case is that the two databases are on different locations to protect against a disaster (fire, water etc.) at one of the locations. Sorry, forgot to mention this.
Thank you. Received on Wed Sep 10 2008 - 14:56:19 CDT