Oracle 10g DB clustering question

Hi All
If I am going to cluster my db, what method/type of software should I use.

Hi,
The most suitable s/w changes by the thing which your DB regards as important.
System requirements (ex SLA) , cost ...
Oracle RAC is Acitve-Active cluster solution.
All of node is active and can execute a sql.
However, the license cost becomes very higher.
I may be enough in Active-Stanby if a downtime is permitted at the time of instance failure.
PowerHA(AIX)
MC/ServiceGuard(HP-UX)
SunCluster(Solaris)
MSCS(Windows)
...

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