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connected as sysdba to 12.1.0.2 database. SQL> info dba_* views work. Auto completion works after third character v$d. But no matter what I try no 'info v$... command works. Bug?
You can restrict access or use a custom shell, but I'm not aware of a "switch" that would turn off ssh command execution. I also wonder what this could possibility accomplish, because whether you execute a command remotely or type it remotely, where's difference or concern?