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Connor McDonald

Thanks for the question, Rajneesh.

Asked: April 03, 2020 - 12:33 pm UTC

Last updated: April 06, 2020 - 12:37 am UTC

Version: 19 c

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You Asked

Hello TOM,

Any comment regarding Using Materialized View as ETL option to populate data from OLTP to OLAP?
Pros and Cons will be useful.

Thanks,

Rajneesh


and Connor said...

You need to elaborate on what you mean by this.

I assume you mean an MVIEW on your OLAP system which reads from source tables on your OLTP system.

If this is the case, then it is most likely either

a) complete refresh at regular intervals, or
b) partial refresh using mview logs on the source tables

If in (a) the full refresh does not place excessive load on your OLTP system (eg, you can run it at quiet times at night), or in (b) the transactional overhead of mview logs is not a significant performance concern, then these methods would be OK.

As always, testing is essential to ensure your OLTP system is not adversely affected.

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Thanks for your help

A reader, April 06, 2020 - 5:37 am UTC

Thank you, it helps
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