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Oracle Database 23ai Administration Associate Sample Questions (Q47-Q52):

NEW QUESTION # 47
Which of the following is true about the status of a PDB that has been unplugged from a CDB?

A. The STATUS column in CDB_PDBS of the unplugged PDB will be UNAVAILABLE.
B. The STATUS column in CDB_PDBS of the unplugged PDB will be UNPLUGGED.
C. The STATUS column in CDB_PDBS of the unplugged PDB will be DISABLED.
D. The STATUS column in CDB_PDBS of the unplugged PDB will be REMOVED.

Answer: B

Explanation:
A .True. After ALTER PLUGGABLE DATABASE ... UNPLUG, CDB_PDBS.STATUS shows UNPLUGGED.
B .False. UNAVAILABLE isn't a valid status here.
C .False. REMOVED isn't used; UNPLUGGED persists until dropped.
D .False. DISABLED isn't a PDB state in this context.

NEW QUESTION # 48
Which three statements are true about Automatic Diagnostic Repository (ADR)?

A. It is only used for Oracle database diagnostic information.
B. It is a file-based repository held outside any database.
C. It is held inside an Oracle database schema.
D. The ADR base is specified in the DIAGNOSTIC_DEST database parameter.
E. It can be used for the problem diagnosis of a database when that database's instance is down.

Answer: B,D,E

Explanation:
A .True. ADR is a file system directory structure (e.g., /u01/app/oracle/diag), external to the database.
B .False. ADR also stores diagnostics for non-database components (e.g., ASM, listener).
C .False. It's file-based, not schema-based.
D .True. ADR logs (e.g., alert logs, trace files) are accessible even if the instance is down.
E .True. DIAGNOSTIC_DEST sets the ADR base directory.

NEW QUESTION # 49
You want to apply the principle of Least Privilege in all your live databases. One of your requirements is to revoke unnecessary privileges from all users who have them using Privilege Analysis. Which three types of analyses can be done using the DBMS_PRIVILEGE_CAPTURE package?

A. Analysis of privileges granted directly to a role that are then used by a user who has been granted that role.
B. Analysis of all privileges used by all users but excluding administrative users in the database.
C. Analysis of privileges that a user has on their own schema objects that they did use.
D. Analysis of privileges granted indirectly to a role that are then used by a user who has beengranted that role.
E. Analysis of privileges that a user has on their own schema objects that they did not use.
F. Analysis of all privileges used by all users including administrative users in the database.

Answer: C,D,E

Explanation:
A .True. Captures unused self-owned object privileges.
B .False. SYS is excluded from capture.
C .False. No exclusion option for admin users.
D .False. Direct role grants aren't separately analyzed.
E .True. Tracks indirect role privileges used.
F .True. Identifies used self-owned privileges.

NEW QUESTION # 50
Which two statements are true about User Authentication in an Oracle Database?

A. Password File authentication must be used for system-privileged administrative users.
B. Password authentication must be used for system-privileged administrative users.
C. Operating System authentication may be used for system-privileged administrative users.
D. REMOTE_LOGIN_PASSWORDFILE must be set to EXCLUSIVE to permit password changes for system-privileged administrative users.
E. Password File authentication is supported for any type of database user.

Answer: A,C

Explanation:
User authentication in Oracle 23ai determines how users (especially administrative ones) connect to the database. Let's analyze each option with extensive detail:
A . Operating System authentication may be used for system-privileged administrative users.
True. OS authentication allows users mapped to OS accounts (e.g., ops$oracle) to connect without a password, often used for administrative users like SYS or SYSTEM. This is configured by creating an externally authenticated user (e.g., CREATE USER "OPS$ORACLE" IDENTIFIED EXTERNALLY) and relies on the OS to verify identity.
Mechanics:When a user logs in via sqlplus / as sysdba, Oracle checks the OS user against the dba group (Unix) or ORA_DBA (Windows). If matched, no password is needed, leveraging OS security.
Practical Use:Common for DBAs managing local instances, reducing password management overhead.
Edge Case:Requires REMOTE_LOGIN_PASSWORDFILE=NONE for exclusive OS auth, but this isn't mandatory if a password file exists alongside.
Historical Note:Introduced in early Oracle versions, this remains a robust option in 23ai for local admin access.
B . Password authentication must be used for system-privileged administrative users.
False. "Must" is incorrect; password authentication (e.g., sqlplus sys/password) is an option, not a requirement. OS authentication or password file authentication can also be used for users like SYS. This option overstates the necessity of password-based login.
Why Incorrect:Oracle's flexibility allows multiple methods, contradicting the absolute phrasing here.
C . Password File authentication is supported for any type of database user.
False. Password file authentication is restricted to users with SYSDBA, SYSOPER, or similar system privileges (e.g., SYSBACKUP). Regular users (e.g., HR) can't use the password file (orapw<sid>); they rely on database authentication (passwords stored in the DB) or external methods.
Mechanics:The password file stores hashed credentials for privileged users, checked during remote AS SYSDBA logins.
Why Incorrect:Extending this to "any user" ignores Oracle's security model limiting password file usage.
D . REMOTE_LOGIN_PASSWORDFILE must be set to EXCLUSIVE to permit password changes for system-privileged administrative users.
False. REMOTE_LOGIN_PASSWORDFILE=EXCLUSIVE allows a dedicated password file for one instance, enabling password changes via ALTER USER SYS IDENTIFIED BY newpass. However, SHARED mode also permits changes for SYS, though not for other users added to the file. The "must" overstates the requirement; it's sufficient, not necessary.
Mechanics:EXCLUSIVE locks the file to one DB, while SHARED allows multiple DBs to use it, with restrictions on non-SYS users.
E . Password File authentication must be used for system-privileged administrative users.
True. For remote administrative access (e.g., sqlplus sys/password@orcl as sysdba), a password file is mandatory when REMOTE_LOGIN_PASSWORDFILE is EXCLUSIVE or SHARED. Local OS authentication is an alternative, but for network-based admin tasks, the password file is required, making this statement true in that context.
Mechanics:Set via orapwd (e.g., orapwd file=orapworcl password=oracle entries=10), enabling remote SYSDBA logins.
Edge Case:If REMOTE_LOGIN_PASSWORDFILE=NONE, only OS auth works locally, but this isn't the default or typical setup.

NEW QUESTION # 51
How do you validate that the database was migrated to Unified Auditing?

A. By querying V$OPTION for parameter Unified Auditing.
B. By executing DBMS_AUDIT_MGMT PL/SQL package in Verify mode.
C. By using the LSINVENTORY Command to query the Oracle Database Software Library.
D. By querying the DBA_UNIFIED_AUDIT_OPTION view.

Answer: A

Explanation:
Unified Auditing is enabled at database creation or migration in 23ai. Let's analyze:
A . By querying V$OPTION for parameter Unified Auditing.
True. SELECT VALUE FROM V$OPTION WHERE PARAMETER = 'Unified Auditing'; returns TRUE if enabled. It's the definitive way to confirm Unified Auditing is active at the database level.
Mechanics:V$OPTION reflects compiled-in features; TRUE indicates the binary was linked with Unified Auditing (uniauflt=on during relink).
Practical Use:Quick, reliable check post-migration or upgrade.
B . By using the LSINVENTORY Command to query the Oracle Database Software Library.
False. LSINVENTORY (from OPatch) lists installed software components, not runtime features like auditing mode.
C . By querying the DBA_UNIFIED_AUDIT_OPTION view.
False. This view doesn't exist; DBA_AUDIT_POLICIES or UNIFIED_AUDIT_TRAIL show policies and records but not migration status.
D . By executing DBMS_AUDIT_MGMT PL/SQL package in Verify mode.
False. No "Verify mode" exists in DBMS_AUDIT_MGMT; it manages audit trails, not migration validation.

NEW QUESTION # 52
......

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