Trigger Between two DB located on different Server

Question

Hi Everyone,
According to my project requirement I need your help to create a trigger on one table employee of my 10g DB located on server 172.128.1.62, which will trigger for any Delete, Update and Insert and update the same on its duplicate table located on different server(172.128.1.201).
Eg:
Table EMPLOYEE (on 172.128.1.62) refer as A
SrNo        E_Name      Salary
1             Fizzz           5000
2             Albert        8000
3             John          6500
Table EMPLOYEE (on 172.128.1.201) refer as B
SrNo        E_Name      Salary
1             Fizzz           5000
2             Albert        8000
3             John          6500
Now If I update table A and change salary of John from 6500 to 7000 and delete Employee Fizzz from table A
Then I need a trigger to get fired and update the same in table B
After table A updated table B should look like:
Table EMPLOYEE (on 172.128.1.201) refer as B
SrNo        E_Name      Salary
1             Albert        8000
2             John          7000
I already scratch my head but did not find anything, Now this is became very critical requirement, Please somebody help me to achieve this task.
Thank you very much,
Fizzz. Edited by: Fizzz on Sep 22, 2011 4:36 PM

Answer 1

I would not consider doing it myself with triggers. It will practically be guaranteed that at some point in time your data in B will by out of sync with A.
There are several methods of doing replication. At least two technologies can be chosen from:
[url http://download.oracle.com/docs/cd/E11882_01/server.112/e10706/toc.htm]Advanced replication
[url http://download.oracle.com/docs/cd/E11882_01/server.112/e10705/toc.htm]Streams replication
Both can be setup in various ways ranging from simple two-database one-way replication that refreshes periodically (for example a fast refreshable materialized view) to multi-database multi-way replication of complete schemas.
We have had success with relatively simple materialized views for one-way replication of tables from one database to another. Read chapter 3 in the Advanced replication guide ;-)