Veritas Storage Foundation 5.1 SP1 for Oracle RAC Administrator"s Guide (5900-1512, April 2011)

or,
Reporting communication error with node
Check whether the Oracle Real Application Cluster instance on the other system
is still running or has been restarted. The warning message indicates that the
VCSIPC/LMX connection is no longer valid.
Troubleshooting Oracle
This section discusses troubleshooting Oracle.
Oracle log files
The following Oracle log files are helpful for resolving issues with Oracle
components:
■ Oracle log file
■ CRS core dump file
■ Oracle css log file
■ OCSSD core dump file
Oracle log file
The Oracle log file contains the logs pertaining to the CRS resources such as the
virtual IP, Listener, and database instances. It indicates some configuration errors
or Oracle problems, since CRS does not directly interact with any of the Symantec
components.
CRS core dump file
The CRS core dumps for the crsd.bin daemon are written here. Use this file for
further debugging.
To check for crs core dumps access:
Oracle css log file
The css logs indicate actions such as reconfigurations, missed checkins, connects,
and disconnects from the client CSS listener. If there are any membership issues,
they will show up here. If there are any communication issues over the private
networks, they are logged here. The ocssd process interacts with vcsmm for cluster
membership.
225Troubleshooting SF Oracle RAC
Troubleshooting Oracle