The Sun Cluster HA for Oracle 3.0 data service can run on Sun Cluster 3.1 only when used with the following versions of the Solaris operating environment:
Solaris 8, 32-bit version
Solaris 8, 64-bit version
Solaris 9, 32-bit version
The Sun Cluster HA for Oracle 3.0 data service cannot run on Sun Cluster 3.1 when used with the 64-bit version of Solaris 9.