Pros and Cons of Using UFS Direct I/O for Databases (Doc ID 1005087.1)

Last updated on JULY 29, 2016

Applies to:

Solaris Operating System
All Platforms


By default, filesystem I/O is buffered in the kernel both through segmap and the page cache. Depending on use, this may not be the optimal configuration for data, and careful consideration and use of filesystem buffering, and direct I/O should be taken when setting up a system for running a database. This document applies to UFS only.


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