修改/dev/shm的大小可以通过修改/etc/fstab来实现，将/dev/shm的大小修改为12G
[root@jtp1 bin]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/ol-root 49G 42G 7.9G 85% /
devtmpfs 12G 28K 12G 1% /dev
tmpfs 1.0G 164K 1.0G 1% /dev/shm
tmpfs 1.0G 9.3M 1015M 1% /run
tmpfs 1.0G 0 1.0G 0% /sys/fs/cgroup
/dev/sda1 1014M 141M 874M 14% /boot
[root@jtp1 bin]# vi /etc/fstab
#
# /etc/fstab
# Created by anaconda on Sat Mar 18 15:27:13 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
#
/dev/mapper/ol-root / xfs defaults 0 0
UUID=ca5854cd-0125-4954-a5c4-1ac42c9a0f70 /boot xfs defaults 0 0
/dev/mapper/ol-swap swap swap defaults 0 0
tmpfs /dev/shm tmpfs defaults,size=12G 0 0
tmpfs /run tmpfs defaults,size=12G 0 0
tmpfs /sys/fs/cgroup tmpfs defaults,size=12G 0 0
重启集群后，再次检查集群资源状态恢复正常
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[grid@jtp1 ~]$ crsctl stat res -t
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Name Target State Server State details
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Local Resources
--------------------------------------------------------------------------------
ora.ASMNET1LSNR_ASM.lsnr
ONLINE ONLINE jtp1 STABLE
ONLINE ONLINE jtp2 STABLE
ora.CRS.dg
ONLINE ONLINE jtp1 STABLE
ONLINE ONLINE jtp2 STABLE
ora.DATA.dg
ONLINE ONLINE jtp1 STABLE
ONLINE ONLINE jtp2 STABLE
ora.FRA.dg
ONLINE ONLINE jtp1 STABLE
ONLINE ONLINE jtp2 STABLE
ora.LISTENER.lsnr
ONLINE ONLINE jtp1 STABLE
ONLINE ONLINE jtp2 STABLE
ora.TEST.dg
ONLINE ONLINE jtp1 STABLE
ONLINE ONLINE jtp2 STABLE
ora.chad
ONLINE ONLINE jtp1 STABLE
ONLINE ONLINE jtp2 STABLE
ora.net1.network
ONLINE ONLINE jtp1 STABLE
ONLINE ONLINE jtp2 STABLE
ora.ons
ONLINE ONLINE jtp1 STABLE
ONLINE ONLINE jtp2 STABLE
ora.proxy_advm
OFFLINE OFFLINE jtp1 STABLE
OFFLINE OFFLINE jtp2 STABLE
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Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
1 ONLINE ONLINE jtp1 STABLE
ora.LISTENER_SCAN2.lsnr
1 ONLINE ONLINE jtp2 STABLE
ora.LISTENER_SCAN3.lsnr
1 ONLINE ONLINE jtp2 STABLE
ora.MGMTLSNR
1 ONLINE ONLINE jtp2 169.254.237.250 88.8
8.88.2,STABLE
ora.asm
1 ONLINE ONLINE jtp1 Started,STABLE
2 ONLINE ONLINE jtp2 Started,STABLE
3 OFFLINE OFFLINE STABLE
ora.cvu
1 ONLINE ONLINE jtp2 STABLE
ora.jy.db
1 ONLINE OFFLINE STABLE
2 ONLINE OFFLINE STABLE
ora.jtp1.vip
1 ONLINE ONLINE jtp1 STABLE
ora.jtp2.vip
1 ONLINE ONLINE jtp2 STABLE
ora.mgmtdb
1 ONLINE ONLINE jtp2 Open,STABLE
ora.qosmserver
1 ONLINE ONLINE jtp2 STABLE
ora.scan1.vip
1 ONLINE ONLINE jtp1 STABLE
ora.scan2.vip
1 ONLINE ONLINE jtp2 STABLE
ora.scan3.vip
1 ONLINE ONLINE jtp2 STABLE
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到此集群恢复正常