RE: RE: RE: Stand-by (Oracle9i Data Guard) vs. Replication

From: Sakthi , Raj <rajan_sakthi_at_yahoo.com>
Date: Tue, 26 Mar 2002 11:12:27 -0800
Message-ID: <F001.00433CAC.20020326111227@fatcity.com>

Well,
being in health care industry myself I know too well what do you mean. Apart from 100s of tousands of $ lost every hour we are down, we have to take some safety also into account.
As to the question of advanced replication, having implemented multi-master replication myself I know what a nightmare it could turn out to be . Moreover it wasn't greate shakes in performance either. Only advantage you are looking at when considering a third party software. It is script driven so no info gets stored in data dictionary. How this could be a merit ?...well you don't get hung up on distributed transaction ( 2 phase commit ) problem solving - performance hit which is inevitable. More over I have seen the technology of reading redo logs/archive logs and it seems to be stable and fast.

Finally I think it is matter of personal preference also. But I coul dbe wrong.

Cheers,
RS

• "Freeman, Robert " <Robert_Freeman_at_csx.com> wrote:
  > >>1. Is the critical data would be updated in the
  > sites..?
  > Yes...
  > >> 2. If yes , are you expecting the other sites to
  > 'see' this update...?
  > Yes...
  > >> 3. If one site is down, then are you expecting
  > the other sites to share
  > the >> load or you have the closest site in take in
  > all the load...?
  > Yes
  >
  

  ---

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Author: Sakthi , Raj
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Received on Tue Mar 26 2002 - 13:12:27 CST