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Question and Answer

Chris Saxon

Thanks for the question, stan.

Asked: July 13, 2017 - 7:48 pm UTC

Last updated: July 18, 2017 - 9:42 am UTC

Version: 12c

Viewed 1000+ times

You Asked


I have schema access to database A and have DBA access to database B. I have the same schema in both databases. How do I synchronize every changes that occur in A to happen in B on a daily basis.

and Chris said...

There's many techniques you could use. Which depends a lot on what exactly you plan to with the data in database B and the access you have to A. Assuming that either you want it read only or to overwrite any changes made in B with those from A you could look into:

- Create database B as a snapshot standby of database A

https://oracle-base.com/articles/11g/data-guard-setup-11gr2#snapshot_standby

- Datapump export/import

https://oracle-base.com/articles/10g/oracle-data-pump-10g

- Create materialized views in B selecting from ("Advanced Replication", deprecated in 12c)

http://docs.oracle.com/database/121/REPLN/toc.htm

- Use Oracle GoldenGate to send the changes

http://www.oracle.com/technetwork/database/multitenant/learn-more/ogg-multitenant-2408073.pdf

- PDB Cloning (if you're using Multitenant)

http://www.oracle.com/webfolder/technetwork/tutorials/obe/db/12c/r1/pdb/pdb_clone/pdb_clone.html

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Comments

Stanley uba, July 17, 2017 - 3:47 pm UTC

Database A is the production and database B is basically a new testing environment that I am trying to set up. I have full access in Database B but not full access to Database A. I dont mind having database A overwriting B.
Chris Saxon
July 18, 2017 - 9:42 am UTC

And how big is the schema in A? If this is "small" you could look into data pump.
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