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Is It Possible To Prevent an OS Authenticated Oracle User To Connect via the command "SQLPLUS / AS SYSDBA" ? (Doc ID 988262.1)

Last updated on AUGUST 18, 2023

Applies to:

Oracle Database - Enterprise Edition - Version and later
Oracle Database Cloud Schema Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.


By default users that are able to logon as the 'oracle' user on the unix/linux box are able to login to the database with administrator privileges via the command 'sqlplus / as sysdba'.

This form of authentication relies on the feature called 'Operating System Authentication' - No password is required for the user 'oracle'.

You may want to disable this authentication, and if any operating system user tries to login to the database instance, the user should be forced to use the command 'sqlplus sys@as sysdba' and supply the correct password. How would that be possible if at all?


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