Synchronize the Oracle database

I have direct Oracle 9i R2 Database on TRU 64 Unix 5. 1 b and test\development environment on Windows 2003.

The database is instant 2 months old, now we want to update the data with the latest news from live. I want to import the main schema with the setting ignore = y, but I see tables have no unique or primary key on the table and there are more than 10,000 tables in all, import can duplicate data.

Exp/Imp same incremental might not help because there is no structural changes in the database.

What is the best way to update/synchronize the database with the most recent data without duplicating records. ?

Using an oracle/third party tools?

Appreciate the comments.

Thank you.

To export only the data changed since the last export, you must ensure that all tables in the database contains a column that lists them when a row is inserted or updated, and a window of downtime in production for each update that makes sure that no data changes intervene during the time the export is run. That seems pretty unlikely.

While replication is a theoretical possibility, which is probably not practical. You do not want the objects in lowest environments to be materialized views, you want that they act as matching the production items. Generally, you do not want to incur the overhead of tracking and storage of the changes in the production database in order to make updates in the lowest environments. In addition, you do development in the lowest environments, so you should have to constantly change the replication code to match the new environment.

I guess you can register a third-party replication tool, but who will have the same scope of issues that would be to use the Oracle replication. You must have a staging area potentially huge staging all data changes, you put an overhead on all data bases of production, and you would still have issues with screwing the process of replication of schema changes.

The safe and sane solution is almost always blow the less environment and do a complete refresh of production.

Justin

Tags: Database

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