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If the filesystem is in use, the attempt will fail, adding a -f will force the us mounting of the filesystem and which could lead to the application crashing and possible loss of data...
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How we will unmount the file system.<br />
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/dev/asm/dbfsvol-446 acfs &nbsp;188743680 26825960 161917720 &nbsp;15% /acfs
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How we will unmount the file system.

/dev/asm/dbfsvol-446 acfs  188743680 26825960 161917720  15% /acfs

unmountfilesystem

Linux is a UNIX-like open source operating system with hundreds of distinct distributions, including: Fedora, openSUSE, Ubuntu, Debian, Slackware, Gentoo, CentOS, and Arch Linux. Linux is generally associated with web and database servers, but has become popular in many niche industries and applications.