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What is acceptable level of Private Interconnect Latency for RAC

user7419391Mar 7 2010 — edited Mar 9 2010

We have build 3 Node RAC on RHEL5.4 on VMware.

There is node eviction problem due to loss of Network Heartbeat.

ocssd.log:[ CSSD]2010-03-05 17:48:21.908 [84704144] >TRACE: clssnmReadDskHeartbeat: node 3, vm-lnx-rds1173, has a disk HB, but no network HB, DHB has rcfg 0, wrtcnt, 2, LATS 1185024, lastSeqNo 2, timestamp 1267791501/1961474

Ping statistics from Node2 to Node1 are as below

--- rds1171-priv ping statistics ---
443 packets transmitted, 443 received, 0% packet loss, time 538119ms
rtt min/avg/max/mdev = 0.150/2.030/630.212/29.929 ms
[root@vm-lnx-rds1172 oracle]#

Can this be reason for Node eviction? What is acceptable level of of private interconnect latency for RAC ?

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Locked on Apr 6 2010

Added on Mar 7 2010

#performance-availability, #rac, #rac-asm-clusterware-installation

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