Lot of people have already blogged about Oracle Golden Gate so in this blog I will just give pointers to those links.
High level overview of Oracle Golden Gate
Quick overview and demos to setup Golden Gate
http://gavinsoorma.com/2010/02/oracle-goldengate-an-introduction/ (To start with and there are various other tutorials on Gavin’s blog)
While testing golden gate I ran into lot of issues and logdump utility helped me a lot to read trail files and fix issues.
Performance & Exception Handler
Oracle Golden Gate by example
Upcoming Golden Gate Books
Important Metalink notes and Documentation
1194273.1 – How to de normalize data using Golden Gate
1099523.1 – TimesTen replication using Golden Gate