Whats so special with Advanced Replication feature of Oracle

Hi Techies,
I had a long term doubt on this. When the same functionality can be done using triggers and jobs, why should such advanced replication exist to use all those 5-10 packages and all those mess. What other thing in replication does differentiate it from its rival, manual work ie using triggers and jobs.
Siva

Why use Oracle Replication? Where to start?
(1) Re-inventing the wheel is never a good idea. especially when there's a high risk of inventing it square-shaped.
(2) Oracle will support their replication implementation: they won't support yours.
(3) QUERY_REWRITE_ENABLED
(4) efficiency: Oracle's inbuilt kernel code is simply faster than anything we can write
(5) Do you really mean Advanced Replication and not just materialized views?
"all those mess"Obviously you've never had a business requirement that really necessitated replication. It is a messy area. We are maintaining a single view of the data in multiple physical locations: that's not clean. Consider: performance, freshness of data, data integrity, data ownership, conflict resolution. Consider deployment and synchronisation with a workforce of remote, disconnected users. Once you have to really wrestle with those sorts of issues you will come to appreciate the flexibility, robustness and completeness of Oracle's replication tools.
There are so many gotchas in just setting up the replication architecture using Oracle's box of bits that only a mad man would want to add building their own set of low level components into the mix. Now, you may have a very simple replication requirement that could be satisfied with a few triggers and a DBMS_JOB. Are you sure that requirement is fuilly scoped? Furthermore, are you sure that your requirement won't get more complex in the future? And do you really think it will take you less time to knock up some triggers and related database objects that it will do to issue a CREATE MATERIALIZED VIEW statement (and maybe a CREATE MATERIALIZED VIEW LOG too)?
Oh, and spare a thought for the poor saps that will have to maintain th eapp after you've gone. They'll probably be happier with a standard Oracle implemenation that is well-known well-documented and for which there are training courses.
Life is too short.
Cheers, APC

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Message was edited by: HLT1
Message was edited by: HLT1

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Before restoring your iPhone, you should import any photos to your computer that are available on your iPhone that were captured by your iPhone, and then sync to update your iPhone's backup if needed.
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