Hi Does anybody know of a way to quickly ascertain which instances are part of a cluster and which are stand alone instances. Suppose i have a server srv1 and a cluster ora-rac which has srv1 ,srv2 and srv3 as ist members. On srv1 we have inst1 inst2 inst3 and inst4 . Now only inst1 is part of a cluster but inst2 to 4 are standlone what command do i use to ascertain that ? regards Hrishy -- //www.freelists.org/webpage/oracle-l