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Chris Saxon

Thanks for the question, purushothaman.

Asked: November 08, 2019 - 6:27 am UTC

Last updated: November 08, 2019 - 8:42 am UTC

Version: 9i and above

Viewed 1000+ times

You Asked

Is clustered Index is faster than Non-clustered Index?

and Chris said...

Oracle Database doesn't have clustered indexes. So the answer is N/A ;)

It does have table clusters.
And index-organized tables. Which are similar to clustered indexes in other databases.

When it comes to performance, one isn't strictly faster than the other. Otherwise they wouldn't both exist!

For more on this read:

https://use-the-index-luke.com/sql/clustering/index-organized-clustered-index
https://use-the-index-luke.com/blog/2014-01/unreasonable-defaults-primary-key-clustering-key


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