> LS> External applications use a "normal" users, our internal
> LS> applications use SYSDBA. We want to even control our own
> LS> applications from accessing the database
>
> Single shutdown mode allows only one connection (from SYSDBA or
> OWNER), so if you are able to assure that your maintenance app will put the
> DB in Single Shutdown mode and be the first one to connect to it just after
> that, you would be safe.

Thanks for the reminder.

There are other reasons why we want to have both instances installed.

I am looking for *details about the gotchas* (I think I recall a post about an environment variables for the lock manager), not about the alternate approaches.


Sean