skgxpvfynet: mtype: 61 process 35044 failed because of a resource problem in the OS. The OS has most likely run out of buffers (rval: 4)
Errors in file /u01/app/oracle/diag/rdbms/racdb01/racdb011/trace/racdb011_ora_35044.trc (incident=1120006):
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: /u01/app/oracle/diag/rdbms/racdb01/racdb011/incident/incdir_1120006/racdb011_ora_35044_i1120006.trc
opiodr aborting process unknown ospid (35044) as a result of ORA-603
Wed May 27 15:06:03 2020
Dumping diagnostic data in directory=[cdmp_20200527150603], requested by (instance=1, osid=35044), summary=[incident=1120006].
Wed May 27 15:06:41 2020
Issue: Connections failing due to loopback mtu settings, we need to lower MTU value for loopback adapter on all cluster nodes
We can make changes without bringing down cluster service
Loopback Settings:
1. Change MTU size of loopback adapter as below.
ifconfig lo mtu 16384
2. To make the change persist after a reboot: Add MTU value in ifcfg-lo
vi /etc/sysconfig/network-scripts/ifcfg-lo
MTU=16384
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