Re: DataGuard and closed/cold backups
- From: David Sharples <davidsharples@xxxxxxxxx>
- To: cjpengel.dbalert@xxxxxxxxx
- Date: Tue, 31 May 2005 20:01:52 +0100
Hi, one question about that - why was the database taken down at all.
If you took a hot backup and starting sending the archives right away
- why the shutdown?
Chers - Dave
On 5/31/05, Carel-Jan Engel <cjpengel.dbalert@xxxxxxxxx> wrote:
> Jackie,
> A couple of years ago I was able to move a database of 90 GB from
> Singapore to The Hague, using Data Guard, through only a 128 kilobit
> dual ISDN dial up line. The downtime of the database was 45 minutes. Of
> course this was in ASYNC mode, logtransfer by ARCH.
>=20
> The trick was calculating the average amount of redo produced weekly,
> and have enough bandwidth for just that. The outage was planned
> carefully, including stopping / starting the apps it took 1.5 hour.
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