I would like to know the purpose of crsctl pin css command in 11g gird.
what is the use of this command.
Actually we had and issue in our 11g RAC cluster (R2), ASM diskgroups was unaccessable so we reaise SR with oracle that time they asked us to run below command.
$GRID_HOME/bin/crsctl pin css -n <racnode1> <racnode2> <racnode3>
olsnodes -n -t
after this issue got resolved the output look like this.
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oracle:@lnxracfd1a /oracle > sudo crsctl pin css -n lnxracfd1a lnxracfd1b lnxracfd1c
CRS-4664: Node lnxracfd1a successfully pinned.
CRS-4664: Node lnxracfd1b successfully pinned.
CRS-4664: Node lnxracfd1c successfully pinned.
oracle:@lnxracfd1a /oracle > olsnodes -t -n
lnxracfd1a 1 Pinned
lnxracfd1b 2 Pinned
lnxracfd1c 3 Pinned
Here my question is, pinning node means what.
what will happen if any one of the node in the cluster was unable to ping.