Oracle database filesystem (DBFS) done the easy way!

Frits Hoogland Weblog

I was introduced to the database filesystem by Kevin Closson during an Exadata seminar. At first it struck me as a little odd. What could be a valid reason to store files or a filesystem inside the database? When doing research on the internet, I found a description for setup on Tim’s Oracle Base website.

The need for a database filesystem

Well, with databases which need to handle large amounts of data outside of the database (for loading for example, CSV files) being able to dynamically add filesystem space using the database is easy “for us database administrators”. When filesystem space outside of the database is needed we need to ask the sysadmin for X gigabytes of (non-database) space, which the sysadmin needs to ask from the SAN admin in most cases. That means it is impossible in almost any case to have a large filesystem at will.

In most…

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