Oracle Linux: How To Reduce Filesystem Reservation And Make Additional Space Available

(Doc ID 2391560.1)

Last updated on MAY 16, 2018

Applies to:

Linux OS - Version Oracle Linux 6.0 to Oracle Linux 6.9 [Release OL6 to OL6U9]
Information in this document applies to any platform.
In an Oracle Linux server 4 standalone oracle databases are hosted and all of them are in a very big file system (670GB). The reserved space in this file system is about 33.5GB (5% as per Linux default settings)


On a large filesystem, the default settings reserve 5% space for use by privileged processes, such as system daemons and to avoid filesystem fragmentation.  On a large filesystem the size of this reserved area can be considerable.  Typically database files have a fixed size and are not otherwise used by a system daemon.  Reducing the size of this reserved area can prevent this space from being unused.


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