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Allocating LOB segments

I am setting up a tablespace to store BLOBs. I want to use a locally managed tablespace with uniform extent. How are the LOB segments allocated within the tablespace? What is an appropriate uniform extent size for the BLOBs?

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LOB segments are no different than any other segments when it comes to allocating space. LOB segments will use whatever allocation method is defined for that tablespace.

At this point, I would like to suggest that you use the AUTOALLOCATE method for your Locally Managed Tablespace. I use LMTs with AUTOALLOCATE exclusively for my tablespaces. I stopped thinking about extent sizes over two years ago and have never looked back. Why worry about an "appropriate uniform extent size" when Oracle and AUTOALLOCATE does a really good job of worrying about extent sizes for you? Change your LMTs to AUTOALLOCATE and start living!

This was first published in July 2004

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