MulticastUdpSocket failed to set receive buffer size in SOA Suite 11.1.1.9 cluster

Problem

The following appears to be repeating every 75 seconds exactly in soa_server1-diagnostic.log:

[2017-03-15T13:02:33.077+00:00] [soa_server1] [WARNING] [] [Coherence] [tid: Logger@9270387 3.7.1.13] [userId: <anonymous>] [ecid: 0000LfI3B__3b605zzT4iW1OmJeA000003,1:17737] [APP: soa-infra] 2017-03-15 13:02:33.077/235.749 Oracle Coherence GE 3.7.1.13 <Warning> (thread=PacketListenerN, member=1): MulticastUdpSocket failed to set receive buffer size to 16 packets (1023KB); actual size is 20%, 3 packets (208KB). Consult your OS documentation regarding increasing the maximum socket buffer size. Proceeding with the actual value may cause sub-optimal performance. 

[2017-03-15T13:03:48.114+00:00] [soa_server1] [WARNING] [] [Coherence] [tid: Logger@9270387 3.7.1.13] [userId: <anonymous>] [ecid: 0000LfI3B__3b605zzT4iW1OmJeA000003,1:17737] [APP: soa-infra] 2017-03-15 13:03:48.114/310.786 Oracle Coherence GE 3.7.1.13 <Warning> (thread=PacketListenerN, member=1): MulticastUdpSocket failed to set receive buffer size to 16 packets (1023KB); actual size is 20%, 3 packets (208KB). Consult your OS documentation regarding increasing the maximum socket buffer size. Proceeding with the actual value may cause sub-optimal performance. 

[2017-03-15T13:05:03.182+00:00] [soa_server1] [WARNING] [] [Coherence] [tid: Logger@9270387 3.7.1.13] [userId: <anonymous>] [ecid: 0000LfI3B__3b605zzT4iW1OmJeA000003,1:17737] [APP: soa-infra] 2017-03-15 13:05:03.182/385.854 Oracle Coherence GE 3.7.1.13 <Warning> (thread=PacketListenerN, member=1): MulticastUdpSocket failed to set receive buffer size to 16 packets (1023KB); actual size is 20%, 3 packets (208KB). Consult your OS documentation regarding increasing the maximum socket buffer size. Proceeding with the actual value may cause sub-optimal performance.  

[2017-03-15T13:06:18.221+00:00] [soa_server1] [WARNING] [] [Coherence] [tid: Logger@9270387 3.7.1.13] [userId: <anonymous>] [ecid: 0000LfI3B__3b605zzT4iW1OmJeA000003,1:17737] [APP: soa-infra] 2017-03-15 13:06:18.221/460.893 Oracle Coherence GE 3.7.1.13 <Warning> (thread=PacketListenerN, member=1): MulticastUdpSocket failed to set receive buffer size to 16 packets (1023KB); actual size is 20%, 3 packets (208KB). Consult your OS documentation regarding increasing the maximum socket buffer size. Proceeding with the actual value may cause sub-optimal performance. 

[2017-03-15T13:07:33.245+00:00] [soa_server1] [WARNING] [] [Coherence] [tid: Logger@9270387 3.7.1.13] [userId: <anonymous>] [ecid: 0000LfI3B__3b605zzT4iW1OmJeA000003,1:17737] [APP: soa-infra] 2017-03-15 13:07:33.245/535.917 Oracle Coherence GE 3.7.1.13 <Warning> (thread=PacketListenerN, member=1): MulticastUdpSocket failed to set receive buffer size to 16 packets (1023KB); actual size is 20%, 3 packets (208KB). Consult your OS documentation regarding increasing the maximum socket buffer size. Proceeding with the actual value may cause sub-optimal performance.

Solution

1. As 'root', edit /etc/sysctl.conf and add the following:

net.core.rmem_max=2096304
net.core.wmem_max=2096304
net.core.rmem_max=4194304                                                      
net.core.wmem_max=4194304

2. Bounce the SOA managed servers.

References

• http://docs.oracle.com/cd/E14526_01/coh.350/e14509/perftune.htm#COHDG217 

 

Applicable Versions

• Oracle SOA Suite 11g (11.1.1.9.0)
• Oracle Coherence 11g (11.1.1.9.0)