DO YOU KNOW TO IDENTIFY IPC PROTOCOL USED BY ORACLE RAC?

Here in this article you learn to check the ipc protocol used in your RAC system using trace dump

To get the RAC ipc protocol details used for communication between the nodes,use tracing utility like oradebug

Below output shows an example of RDS protocol used for interprocess communication


kish@exdbx<>oradebug ipc
IPC information written to the trace file

kish@exdbx<>oradebug tracefile_name
/data/base/diag/rdbms/exdbx/exdbx1/trace/exdbx1_ora_17035.trc


SKGXP:[2b9012c62c48.35]{ctx}:   SSKGXPT 0x2b9012c641b8 flags 0x4 { READPENDING } sockno 4 IP 169.254.66.74 RDS 4377 lerr 0
SKGXP:[2b9012c62c48.36]{ctx}:
SKGXP:[2b9012c62c48.37]{ctx}: post port:
SKGXP:[2b9012c62c48.38]{ctx}:   SSKGXPT 0x2b9012c64680 flags 0x2 { WRITE } sockno 7 IP 127.0.0.1 UDP 60304 lerr 0
SKGXP:[2b9012c62c48.39]{ctx}:
SKGXP:[2b9012c62c48.40]{ctx}: qos adm 0/0 -> 255 UNKNOWN QOS LEVEL rdma 0 -> 0 flags dis

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