Cluster name

Sometime we might need to check our cluster name in our RAC, lets see how to check it.

login to server using grid user and go to $ORA_CRS_HOME/bin or in some servers we might have set ORA_CRS_HOME as ORACLE_HOME where cluster binaries were installed.

Which ever applicable to your environment switch it.

oragrid@vsc02zdbadm020102:cd $ORA_CRS_HOME/bin

Now simply type ./cemutlo and entry to see the available options.

oragrid@vsc02zdbadm020102:/u01/app/12.1.0.2/grid/bin$ ./cemutlo
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>
oragrid@vsc02zdbadm020102:/u01/app/12.1.0.2/grid/bin$

As we need to know only the cluster name use ./cemutlo -n to see what's our cluster name.

oragrid@vsc02zdbadm020102:/u01/app/12.1.0.2/grid/bin$ ./cemutlo -n
tab-clu5
oragrid@vsc02zdbadm020102:/u01/app/12.1.0.2/grid/bin$

Conclusion:  Here is our cluster name "tab-clu5" by default cluster name is "crs".