What is best techniques for Replication

Hi.
I want to implement Replication for the database. So i want to know what is the best way to do this?
Is snapshot is useful for this?
What is the best, efficient and CHEAPER method to implement replication?
cheaper means, I do not want to use Datagard?
Any comment on this is appreciated
Thanks
And hoping for your view on this

In what version and for what purpose?
Is there some rule here that I somehow missed that makes it a criminal act to name the version of the product you are asking about?
The answer to your question is version dependent.
It also depends on how close to real-time, whether the intention is transparent failover, whether the intent is a server that could be used for disaster recovery or whether the intention is for the replica to be a reporting database, whether you will want to implement objects in the replica not present in the original, whether you will want to do transformations and aggregations.
Go to http://tahiti.oracle.com, search for replication and read the basic docs.

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