We are building a Linux Cluster [initially 2 nodes, later 4 nodes] to hold multiple Oracle databases. On Unix we always maintain seperate ORACLE_HOMEs if there is more than 1 database on a server [seperate O_H allows seperate patching and seperate version upgrades]. On the Linux Cluster, we undertand, that there can only be 1 Oracle Cluster Manager install. Oracle's notes on 9iRAC installatiion also include installing the Database RDBMS executables into the same O_H as the Cluster Manager. Would there be any reason why we can't have a) One O_H for the Cluster Manager b) A second O_H for the first Database c) A third O_H for the second Database ? Hemant K Chitale http://web.singnet.com.sg/~hkchital -- //www.freelists.org/webpage/oracle-l