Should Advanced Replication be considered for High Availability solutions?

Hi all,
        my company asked me for evaluating High Availability solutions using 
various Oracle features. I considered RAC and Stand-by solutions 
eventually combined together (RAC at the local site and standby in a 
remote site), but I don't know if even Advanced Replication 
(multimaster) can be considered as a viable alternative.
Any suggestions/real world experiences?
Thanks in advance,
        Giovanni

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Giovanni Cuccu
Sw Engineer@xxxxxxxxxxx
Dianoema S.p.A.
Via de' Carracci 93 40131 Bologna
Tel: 051-7098211   051-4193911
e-mail:gcuccu@xxxxxxxxxxx
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No man does it all by himself,
I said young man,
put your pride on the shelf
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