oracle tmpfs 修改

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本文档介绍了如何调整Oracle服务器上的tmpfs分区大小，从原本的1.5G增加到3G。首先，通过编辑/etc/fstab文件，在tmpfs条目后添加`size=3G`参数。接着，注释掉/etc/rc.d/rc.sysinit文件中关于挂载/dev/shm的语句，然后重启系统，最后确认调整后的tmpfs分区大小。

原先是1.5G

[root@oracle2 oracle]# df -h

Filesystem Size Used Avail Use% Mounted on
/dev/sda3 73G 12G 58G 17% /
tmpfs 3.0G 228K 3.0G 1% /dev/shm
/dev/sda1 788M 44M 705M 6% /boot
/dev/sr0 4.1G 4.1G 0 100% /media/CentOS_6.4_Final

[root@oracle2 oracle]#

2，编辑

vi /etc/fsat 在 tmps后面加上 size=3G

#
# /etc/fstab
# Created by anaconda on Sat Mar 18 07:57:03 2017
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
UUID=8b331b03-f0c1-46f8-bcfe-05515740670c / ext4 defaults 1 1
UUID=a017a929-ba0f-4a17-849d-ec0c9240bd8d /boot ext4 defaults 1 2
UUID=cff9a0ff-ba74-42db-acd9-0e5b409647ce swap swap defaults 0 0
tmpfs /dev/shm tmpfs defaults,size=3G 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
sysfs /sys sysfs defaults 0 0
proc /proc proc defaults 0 0

3.编辑vi /etc/rc.d/rc.sysinit

一、注释掉以下语句

#mount -f /dev/shm >/dev/null2>&1

# Mount all other filesystems (except for NFS and /proc, which is already
# mounted). Contrary to standard usage,
# filesystems are NOT unmounted in single user mode.
# The 'no' applies to all listed filesystem types. See mount(8).
if [ "$READONLY" != "yes" ] ; then
action $"Mounting local filesystems: " mount -a -t tmpfs,nonfs,nfs4,smbfs,ncpfs,cifs,gfs,gfs2 -O no_netdev
else
action $"Mounting local filesystems: " mount -a -n -t tmpfs,nonfs,nfs4,smbfs,ncpfs,cifs,gfs,gfs2 -O no_netdev
fi

4 reboot

df -h