rhel7.1上安装11grac执行root.sh脚本时报错后台进程未启动

rhel7.1安装11.2.0.4rac ，一节点执行root.sh报错如下

在告警日志中发现如下报错

ORA-00603: ORACLE server session terminated by fatal error
ORA-27504: IPC error creating OSD context
ORA-27300: OS system dependent operation:sendmsg failed with status: 105
ORA-27301: OS failure message: No buffer space available
ORA-27302: failure occurred at: sskgxpsnd2

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修改lo网卡配置文件，设置mtu为1500

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 0  (Local Loopback)
        RX packets 447  bytes 39057 (38.1 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 447  bytes 39057 (38.1 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

修改方式：在配置文件里添加MTU=“1500”

参考文章：Skgxpvfynet: Mtype: 61 Process 23043 Failed Because Of A Resource Problem In The OS (文档 ID 2014681.1)