Oracle ASM警告日志错误ORA-00603:ORA-27504: ORA-27300:ORA-27301: ORA-27302:处理

1.监控告警主机ASM磁盘错误：

Fri May 03 08:01:01 2019
skgxpvfynet: mtype: 61 process 60277 failed because of a resource problem in the OS. The OS has most likely run out of buffers (rval: 4)
Errors in file /oracle/app/grid/diag/asm/+asm/+ASM1/trace/+ASM1_ora_60277.trc (incident=11598):
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
Incident details in: /oracle/app/grid/diag/asm/+asm/+ASM1/incident/incdir_11598/+ASM1_ora_60277_i11598.trc
opiodr aborting process unknown ospid (60277) as a result of ORA-603
Fri May 03 08:01:02 2019
Dumping diagnostic data in directory=[cdmp_20190503080102], requested by (instance=1, osid=60277), summary=[incident=11598].
Fri May 03 08:01:03 2019

2.查找Oracle Support文档，处理如下：

3.调整/usr/lib/sysctl.d/00-system.conf或/etc/sysctl.conf

增加 vm.min_free_kbytes 参数，值为物理内存的0.4%。（例如8g内存，vm.min_free_kbytes=810241024*0.004=33554）
sysctl  -p生效

修改 lo mtu 为 16436 .
临时修改 ifconfig lo mtu 16436
或者永久修改 vi /etc/sysconfig/network-scripts/ifcfg-lo 的 MTU=16436

观察运行了4天后，未见异常，问题得到解决。