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@xxxxxxxxxxxxxx
+36 20 438 5909
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http://www.freelists.org/webpage/oracle-l

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