Oracle Database Administration from Zero to Hero - Practice - Using Database Authentication Methods

This video tutorial covers authentication methods in Oracle databases, focusing on OS authentication and password file authentication. It demonstrates how administrative and non-administrative users can access the database using these methods. The tutorial includes practical steps for creating OS users, managing DBA and Opera group memberships, and handling password files. It also explains the behavior of the database when both authentication methods are used and highlights the importance of correct password management.

What allows a user in the DBA group to connect to the Oracle database as SYS?

• OS authentication

• Being a member of the Opera group

• Password file authentication

• Having a corresponding database user

Why does the connection fail when test user tries to connect as SYSOPER initially?

• Test user is not an OS user

• Test user is not in the DBA group

• Test user does not have a password

• Test user is not a member of the Opera group

What happens when a user connects to the database as SYSOPER?

• The user is considered as PUBLIC

• The user is considered as ADMIN

• The user is considered as DBA

• The user is considered as SYS

What happens when both OS authentication and password file authentication are available?

• Password file authentication is used

• Both are used simultaneously

• Neither is used

• OS authentication is used

What is the primary reason for using OS authentication over password file authentication?

• It does not require a password

• It is faster

• It is the default method

• It is more secure

What is the result of renaming the password file from its default name?

• The database can still access it

• The database cannot see it anymore

• It is deleted automatically

• It becomes a backup file

What is the effect of changing the password file's permissions?

• It allows all users to read it

• It restricts access to Oracle and install group members

• It deletes the file

• It encrypts the file

What prefix is used by default for OS_AUTHENT_PREFIX?

• OPS$

• ORA$

• DBA$

• SYS$

What is required for a non-administrative OS user to connect to the database?

• SYSDBA privileges

• A password file entry

• A corresponding database user with the OPS$ prefix

• Being in the DBA group

What must be done to allow a new OS user to connect as a non-administrative user?

• Create a password file entry

• Grant SYSDBA privileges

• Create a corresponding database user

• Add them to the DBA group