How to do Replication

Hi Everybody,
I have an issue and I would appriciate you if you can solve my issue. I have limitted knowledge in Oracle. So please help me how to do replication..
My company is Retail Sales Bussines. We have many brances in different location. So i have to go all the brances once in a week to take backup and bring to main office to give reports to my management. In this case Im wasting lot of time. If I can able to replicate all the branch database to main office this would save my lot of times and pressure.
Each branch having same set of tables. I dont need to replicate inbetween branchs, i just need only replicate all branch database to main office Database.
I am using Oracle 10g R1 Database and Forms.
So please help me anyone how to do this....
Thanks in advance..
Regards
Irsath Ahamed.

Dear Babu.,
Thanks for your reply.. Let me read the articles and I will come back to you...
One more thing, which kind of connection would you prefere between brance office and main office.. I have ADSL internet connection only at main office and branch office having dialup connection only.. This will do replication?..
Regards,
Irsath Ahamed.
Edited by: Irsath Ahamed on Apr 22, 2010 12:46 AM

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