If you have not already done so, in the Change Center of the Administration Console, click Lock & Edit (see Use the Change Center).
In the left
pane of the Console, select Environment >
Clusters.
The Summary of Clusters table displays all the clusters defined
in the domain.
Select the
check box next to the cluster you want to delete.
Click
Delete.
Click
Yes to confirm that you want to delete the
cluster.
To activate these changes, in the Change Center of the Administration Console, click Activate Changes. Not all changes take effect immediately—some require a restart (see Use the Change Center).