Monitor Clusters

Monitor Adaptive Server cluster configurations. Monitored resources include memory usage, device I/O, engine CPU utilization, connection information, interprocess communication, workload management, load profiles, routes, and so on.

To monitor clusters, you must have connect to permissions granted in the master database. connect to permissions can be granted to a role, user, or group.  

The syntax is:
grant connect to someone   
where someone is a role, a user or a group.