how to build logical standby db

–Here are the enviroment and steps:
– Two machine:
– Machine A: 172.16.100.21 RedHat ES3 primiary db, oracle9.2
– Machine B: 172.16.100.29 RedHat ES3 standby db, oracle9.2
Note: These only apply to oracle9i. In oracle10g, it will need to build a physical standby database and then convert it to a logical standby database.
–1.install primiary db on machine A [...]