cluster name of Oracle RAC cluster

How to find out cluster name of Oracle RAC cluster ?

The cluster name is case-insensitive, must be unique across environment, must be no more than 15 characters in length, must be alphanumeric and may contain hyphens (-). Underscore characters (_) are not allowed. But installation script/OUI will not fail, even if you provide more than 15 characters in cluster name.

1) cemutlo utility can be used to find out Oracle RAC Cluster name.

$GRID_HOME/bin/cemutlo -n

e.g.:
/u01/app/11.2/grid/bin/cemutlo -n

Below command will give number of characters in Oracle RAC Cluster name.
/u01/app/11.2/grid/bin/cemutlo -n|wc -c

Usage: ./cemutlo.bin [-n] [-w]
where:
-n prints the cluster name
-w prints the clusterware version in the following format: major_version:minor_version:vendor_info

2) olsnodes utility can be used to find out Oracle RAC Cluster name.
olsnodes -c


Related Oracle RAC Articles: ocrdump commands in RAC   oclumon commands