Oracle7 OSOPER/OSDBA on sequent

Does anyone know how to use OSOPER or OSDBA? My site is running Oracle7 (don't know the exact version number -- 7.0.15.4.2 or some such thing) on Sequent machines, and I can't figure out how to get OSOPER or OSDBA to work. According to the Sequent-specific documentation set, all we need to do is create a UNIX group called "ora_<sid>_<role>" and put users into the group; then they will be able to connect to the database with the given SID and all will be happy. According the the Oracle7 Admin guide, it *sounds* as though these connections are made via "connect internal" -- that is, when a user tries to "connect internal", oracle will try first to enable OSDBA, then (if that fails) try to enable OSOPER, based on the user's group id. But when I try to connect internal to the "devl" database and am in the "ora_devl_osoper" or "ora_devl_osdba" group, it fails.

        Thanks for any help.

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