Usually there is only one ORACLE_HOME per Oracle version on a server so there is a link to $ORACLE_HOME/lib32 for Oracle library. This link will be applicable to all Shareplex instances running on this server if they happen to be from this Oracle version. There may be times when there are two different patches of the same Oracle version installed on a server resulting in multiple ORACLE_HOME for the same version. For example, Oracle 184.108.40.206 and 220.127.116.11 may be installed on a server and both of these ORACLE_SIDs participate in replication. The question is, which ORACLE_HOME/lib32 should the file libclntsh.so.9.0 be linked to? The file libclntsh.so.9.0 is located in /var/adm/.splex/<Shareplex version>/<Oracle version>, which in this case is /var/adm/.splex/V-5.1/lib92.