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VCSIPC errors in Oracle trace/log files

If you see any VCSIPC errors in the Oracle trace/log files, check /var/log/messages for any LMX error messages. If you see messages that contain any of the following:

. . . out of buffers

. . . out of ports

. . . no minors available

Refer to Tunable kernel driver parameters.

If you see any VCSIPC warning messages in Oracle trace/log files that resemble:

connection invalid

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 The warning message indicates that the VCSIPC/LMX connection is no longer valid.