RE: dataguard

As far as I know, you have to stop the replication (recovery) and open the standby database readonly .. when you done "select", you resume recovery process by "alter database recover managed standby database;".

-----Original Message-----
From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org]On Behalf Of Veres Lajos Sent: Tuesday, December 12, 2006 1:07 PM To: oracle-l_at_freelists.org
Subject: dataguard

Hello,

(I never used dataguard before. Sorry for my lame questions.)

Is it possible to syncronize nearly on-line and use the "backup" database as a select-only node with loadbalancing? Our system is 99% read-only. Dataguard seems to be good for redundancy/failsafe, but it would be great if we could use the "backup" machines CPU too.

TNS can spreads SELECTs between the two nodes, and redirect DMLs to only the master?
(Isnt a big problem if TNS cant, then the applications DB layer
should do it.)

Other solution could be a Master->Slave replication, but I think it wont be as solid.

Exists any other Oracle solution for "cumulate computers power"? I heard about RAC, but seems a bit expensive for us. (Shared storage)

Any comment, experience, suggestion, (rtfm keyword) would be really appreciated.

Thanks.

-- 
Veres Lajos
vlajos_at_ludens.elte.hu
+36 20 438 5909
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