Configure 10g OAS Active Active Topology

Hi,
   Our requirement is to deploy 10g OAS (Forms & Reports) on two servers for load balancing, below are my questions,
1. Is it mandatory to configure cluster if I have two applications servers on two different servers.
2. Can we use one URL address for both servers if so how ? (without big IP concept)
3. Please provide some links to configuring active-active 10g-OAS

1. Is it mandatory to configure cluster if I have two applications servers on two different servers.
No.
2. Can we use one URL address for both servers if so how ? (without big IP concept)
Yes. See below.
3. Please provide some links to configuring active-active 10g-OAS
Have a look at this thread

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