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