[2025年11月26日] 最新の1Z0-182試験の的確なOracle Database 23ai Administration AssociateのPDF問題
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質問 # 41
Which three actions are ways to apply the principle of least privilege?
- A. Setting the REMOTE_OS_AUTHENT parameter to TRUE.
- B. Using Access Control Lists (ACLs).
- C. Revoking execute privilege on UTL_SMTP, UTL_TCP, UTL_HTTP, and UTL_FILE from the roles/users (assuming typo for duplicate option).
- D. Setting the O7_DICTIONARY_ACCESSIBILITY parameter to TRUE.
- E. Enabling Unified Auditing.
正解：B、C、E
解説：
A .True. Auditing tracks privilege use, enforcing least privilege.
B .True. Revoking unnecessary PL/SQL access limits capabilities.
C .True. ACLs restrict network access precisely.
D .False. TRUE relaxes dictionary access, violating least privilege.
E .False. TRUE allows risky OS auth, weakening security.
質問 # 42
What are Optimizer Statistics?
- A. Optimizer Statistics are statistics about data distribution within Oracle Datafiles.
- B. Optimizer Statistics are a set of data distribution statistics collected in real time as data is inserted, deleted, or updated, which are stored in AWR and used for generating SQL execution plans.
- C. Optimizer Statistics are part of system performance statistics stored in AWR required for calculating SQL execution plans.
- D. Optimizer Statistics are table, column, index, and system statistics used for generating efficient SQL execution plans.
正解：D
解説：
A .False. Not real-time; collected periodically.
B .False. Not about datafile distribution.
C .True. Includes table, column, index stats for plan generation.
D .False. Stored in data dictionary, not AWR.
質問 # 43
What services does the Automatic Workload Repository (AWR) provide for the database self-tuning functionality?
- A. Creates a new PDB with the original SID of the Non-CDB.
- B. Creates a new PDB by plugging in a previously unplugged Non-CDB.
- C. Enables the creation of a Non-CDB from a CDB.
- D. Simplifies the process of migrating Non-CDB databases to the cloud.
正解：D
解説：
A .False. AWR doesn't create PDBs.
B .True. AWR stats aid migration planning (e.g., performance baselines).
C .False. AWR doesn't convert CDB to Non-CDB.
D .False. SID management isn't AWR's role.
質問 # 44
Which three statements are true about the Oracle Database server during and immediately after SHUTDOWN TRANSACTIONAL?
- A. Uncommitted transactions are allowed to continue to the next ROLLBACK.
- B. Sessions remain connected even if they are not running a transaction.
- C. New connection requests made to the database instance are refused.
- D. Uncommitted transactions are allowed to continue to the next COMMIT.
- E. Instance recovery occurs automatically during the shutdown.
正解：B、C、D
解説：
A .False. Recovery happens on startup, not shutdown.
B .False. TRANSACTIONAL waits for commits or rollbacks, then disconnects.
C .True. New connections are blocked during shutdown.
D .True. Inactive sessions persist until shutdown completes.
E .True. Active transactions can commit before disconnection.
質問 # 45
Which two statements are true about the configuration and use of UNDO?
- A. UNDO_RETENTION specifies how long all types of UNDO are retained.
- B. Active UNDO is always retained.
- C. UNDO_RETENTION specifies for how long Oracle attempts to keep expired and unconsumed UNDO.
- D. Unexpired UNDO is always retained.
- E. UNDO_RETENTION specifies for how long Oracle attempts to keep unexpired UNDO.
正解：B、E
解説：
A .True. Active (in-use) UNDO is never overwritten.
B .False. Unexpired UNDO can be reused if space is needed.
C .False. Applies to unexpired, not expired UNDO.
D .False. Only unexpired UNDO is targeted.
E .True. UNDO_RETENTION sets the retention goal for unexpired UNDO.
質問 # 46
You execute the SHUTDOWN ABORT command. Which two statements are true?
- A. A checkpoint is written.
- B. Subsequent instance startup performs instance recovery.
- C. Data files are closed normally.
- D. Subsequent instance startup performs media recovery.
- E. Uncommitted transactions are not rolled back by the shutdown.
正解：B、E
解説：
A .False. No checkpoint occurs with ABORT.
B .False. Instance recovery, not media recovery, is needed.
C .True. Crash recovery rolls back uncommitted changes on startup.
D .False. Files aren't closed cleanly with ABORT.
E .True. Shutdown doesn't roll back; recovery does.
質問 # 47
Which advisor is used to detect missing or stale object statistics?
- A. SQL Tuning Advisor
- B. SQL Statistics Advisor
- C. SQL Access Advisor
- D. SQL Performance Analyzer
正解：B
解説：
B .True. The SQL Statistics Advisor (new in 23ai) identifies stale or missing statistics. Others focus on tuning, performance analysis, or access paths.
質問 # 48
Which two statements are true about database instances and Real Application Clusters (RAC)?
- A. A RAC database must have two or more instances.
- B. A RAC database must have three or more instances.
- C. Two RAC databases can share their instances.
- D. A RAC database can have instances on separate servers.
- E. A RAC database can have one instance.
正解：D、E
解説：
A .False. RAC can run with one instance (degraded mode).
B .True. Possible, though not typical for RAC.
C .False. No minimum of three.
D .True. RAC instances run on separate nodes.
E .False. Instances are DB-specific in RAC.
質問 # 49
What memory structure caches the data dictionary providing access to all database user processes?
- A. The Streams Pool
- B. The Large Pool
- C. The Shared Pool
- D. The Java Pool
正解：C
解説：
D .True. The Shared Pool caches data dictionary metadata (e.g., table definitions) in the Library Cache and Dictionary Cache, accessible to all processes. Others serve different purposes (e.g., Large Pool for backups).
質問 # 50
As the DBA, you execute this command: GRANT CREATE VIEW TO usr1 WITH ADMIN OPTION; USR1 then executes: GRANT CREATE VIEW TO usr2 WITH ADMIN OPTION; USR2 then executes: GRANT CREATE VIEW TO usr3; Which statement is true?
- A. When the DBA revokes the CREATE VIEW privilege from USR1, it is revoked from USR2 but not USR3.
- B. When the DBA revokes the CREATE VIEW privilege from USR1, it is neither revoked from USR2 nor USR3.
- C. When the DBA revokes the CREATE VIEW privilege from USR2, it is revoked from USR3.
- D. The DBA can revoke only ADMIN OPTION from USR1.
- E. USR1 can revoke the CREATE VIEW privilege from USR3.
正解：B、C
解説：
A .False. Revoking from USR1 doesn't cascade due to WITH ADMIN OPTION.
B .True. Revoking from USR2 cascades to USR3 because USR2 granted it.
C .False. DBA can revoke the full privilege, not just ADMIN OPTION.
D .False. USR1 can't revoke from USR3 directly; only the grantor (USR2) can.
E .True. WITH ADMIN OPTION breaks the revoke chain from USR1 onward.
質問 # 51
Which three tasks are performed by background processes in an Oracle database instance?
- A. Writing redo to log files.
- B. Reading database blocks into the buffer cache.
- C. Reading database blocks into the buffer cache.
- D. Creating dedicated server connections.
- E. Registering services with Oracle Net listeners.
- F. Writing dirty database block images from the buffer cache.
正解：A、E、F
解説：
False. Server processes (foreground) read blocks into the buffer cache during user queries, not background processes.
Explanation:
Background processes manage core database operations. Let's break it down:
A : Creating dedicated server connections.
False. Dedicated server connections are created by the listener, not background processes. The listener hands off the connection to a server process (e.g., ora_s000), which isn't a background process.
B : Registering services with Oracle Net listeners.
True. The LREG process (Listener Registration, formerly PMON's role) registers services with listeners, using parameters like LOCAL_LISTENER.
Mechanics:LREG sends service details (e.g., orcl) to the listener every 60 seconds or on startup.
C : Writing redo to log files.
True. The LGWR (Log Writer) process writes redo entries from the redo log buffer to online redo log files, ensuring transaction durability.
Mechanics:Triggered by commits, log buffer fills, or checkpoints.
D : Writing dirty database block images from the buffer cache.
True. The DBWn (Database Writer) processes write modified (dirty) blocks from the buffer cache to data files, maintaining consistency.
Mechanics:Occurs at checkpoints or when free buffers are needed.
質問 # 52
You must create a tablespace of nonstandard block size in a new file system and plan to use this command: CREATE TABLESPACE ns_tbs DATAFILE '/u02/oracle/data/nstbs_f01.dbf' SIZE 100G BLOCKSIZE 32K; The standard block size is 8K, but other nonstandard block sizes will also be used. Which two are requirements for this command to succeed?
- A. DB_32K_CACHE_SIZE must be set to a value that can be accommodated in the SGA.
- B. The /u02 file system must have at least 100G space for the datafile.
- C. DB_32K_CACHE_SIZE must be less than DB_CACHE_SIZE.
- D. The operating system must use a 32K block size.
- E. DB_32K_CACHE_SIZE should be set to a value greater than DB_CACHE_SIZE.
正解：A、B
解説：
A .False. No such restriction exists; DB_32K_CACHE_SIZE is independent of DB_CACHE_SIZE.
B .True. A nonstandard block size (32K) requires a corresponding cache (DB_32K_CACHE_SIZE) set to a non-zero value within SGA limits.
C .False. OS block size is irrelevant; Oracle manages its own block sizes.
D .False. No requirement for it to exceed DB_CACHE_SIZE.
E .True. The file system must have 100G available for the datafile.
質問 # 53
Examine these commands:
[oracle@host01 ~]$ sqlplus u1/oracle
SQL> SELECT * FROM emp;
ENO ENAME DN
-------------------------
1 Alan 2
2 Ben 2
SQL> exit
[oracle@host01 ~]$ cat emp.dat
1, Alan, 2
3, Curl, 4
4, Bob, 4
[oracle@host01 ~]$ sqlldr u1/oracle TABLE=emp
Which two statements are true?
- A. It overwrites all data in EMP with data from EMP.DAT.
- B. It overwrites the data for Alan and adds data for Curl and Bob.
- C. It appends data from EMP.DAT to EMP.
- D. It generates a log that contains control file entries, which can be used with normal SQL*Loader operations.
- E. It generates a SQL script that it uses to load data from EMP.DAT to EMP.
正解：C、D
解説：
SQL*Loader (sqlldr) loads data from external files into Oracle tables. The command sqlldr u1/oracle TABLE=emp uses defaults since no control file is specified. Let's evaluate:
A . It overwrites the data for Alan and adds data for Curl and Bob.
False. SQLLoader's default mode is APPEND, not REPLACE. It doesn't "overwrite" existing rows unless REPLACE or TRUNCATE is specified in a control file. Here, row 1, Alan, 2 exists, and SQLLoader will either skip it (if a primary key rejects duplicates) or raise an error, but it won't overwrite. 3, Curl, 4 and 4, Bob, 4 are appended.
Mechanics:Without a control file, SQL*Loader assumes APPEND and matches columns positionally (ENO, ENAME, DN).
B . It generates a log that contains control file entries, which can be used with normal SQL*Loader operations.
True. SQL*Loader always generates a log file (e.g., emp.log) when invoked. With no control file specified, it auto-generates one internally and logs it, including entries like LOAD DATA INFILE 'emp.dat' APPEND INTO TABLE emp FIELDS TERMINATED BY ',' (ENO, ENAME, DN). This can be reused.
Practical Use:The log's control section is editable for future runs (e.g., changing to REPLACE).
C . It appends data from EMP.DAT to EMP.
True. Default behavior without a control file is APPEND, adding new rows (3, Curl, 4 and 4, Bob, 4) to EMP. Existing rows (1, Alan, 2, 2, Ben, 2) remain unless constrained (e.g., unique key violations).
Mechanics:SQL*Loader processes each line of emp.dat, skipping duplicates if constrained, appending otherwise.
D . It generates a SQL script that it uses to load data from EMP.DAT to EMP.
False. SQL*Loader doesn't generate SQL scripts; it uses direct path or conventional path loading, not SQL scripts. The log contains control file syntax, not a script.
E . It overwrites all data in EMP with data from EMP.DAT.
False. REPLACE or TRUNCATE would overwrite, but these require a control file with those options. Default APPEND preserves existing data.
質問 # 54
Which three statements are true about an SPFILE?
- A. It contains only static initialization parameters.
- B. It contains initialization parameters whose values can be changed using the ALTER SYSTEM statement.
- C. It can be used to create a PFILE.
- D. It can be created by SYS from an idle instance.
- E. It must exist for a database instance to start.
正解：B、C、D
解説：
A .True. CREATE SPFILE FROM PFILE works when idle.
B .False. Includes dynamic parameters too.
C .True. CREATE PFILE FROM SPFILE generates a PFILE.
D .False. A PFILE can start the instance if no SPFILE exists.
E .True. Dynamic parameters (e.g., DB_CACHE_SIZE) are modifiable.
質問 # 55
Which two statements are true about User Authentication in an Oracle Database?
- A. REMOTE_LOGIN_PASSWORDFILE must be set to EXCLUSIVE to permit password changes for system-privileged administrative users.
- B. Password authentication must be used for system-privileged administrative users.
- C. Password File authentication is supported for any type of database user.
- D. Password File authentication must be used for system-privileged administrative users.
- E. Operating System authentication may be used for system-privileged administrative users.
正解：D、E
解説：
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.
質問 # 56
Your data center uses Oracle Managed Files (OMF) for all databases. All tablespaces are smallfile tablespaces. SALES_Q1 is a permanent user-defined tablespace in the SALES database. The following command is about to be issued by a DBA logged in to the SALES database: ALTER TABLESPACE sales_q1 ADD DATAFILE; Which two actions independently ensure that the command executes successfully?
- A. Ensure that DB_CREATE_FILE_DEST specifies a location with at least 100 MB of available space.
- B. Ensure that DB_RECOVERY_FILE_DEST and DB_CREATE_FILE_DEST each specify locations with at least 50 MB of available space.
- C. Add the AUTOEXTEND ON clause with NEXT set to 100M.
- D. Ensure that DB_RECOVERY_FILE_DEST and DB_CREATE_FILE_DEST each specify locations with at least 50 MB of available space.
- E. Specify a path in the DATAFILE clause of the command specifying a location with at least 100 MB of available space.
正解：A、B
解説：
With OMF enabled, Oracle automatically manages file creation. The command ALTER TABLESPACE sales_q1 ADD DATAFILE without a file specification relies on initialization parameters:
A . Specify a path in the DATAFILE clause ... with at least 100 MB of available space.False. With OMF, explicitly specifying a path overrides OMF behavior, but it's not required for success if OMF parameters are set correctly.
B . Add the AUTOEXTEND ON clause with NEXT set to 100M.False. AUTOEXTEND is optional and affects file growth, not the initial creation success, which depends on available space in the OMF location.
C . Ensure that DB_RECOVERY_FILE_DEST and DB_CREATE_FILE_DEST each specify locations with at least 50 MB of available space.True. If both parameters are set,Oracle may use either for data files (depending on context), and sufficient space (e.g., 50 MB minimum for a smallfile) ensures success.
D . Ensure that DB_CREATE_FILE_DEST specifies a location with at least 100 MB of available space.True. This is the primary OMF parameter for data files; sufficient space (typically 100 MB minimum for a new file) guarantees the command succeeds.
E . Ensure that DB_RECOVERY_FILE_DEST and DB_CREATE_FILE_DEST each specify locations with at least 50 MB of available space.False. This is redundant with C; only one needs sufficient space, though C's phrasing makes it a valid independent action.
質問 # 57
Which statement is true about the PDB_DBA role granted to a local user during the creation of a new PDB?
- A. The role has the privileges to perform DDL operations on all local schema objects.
- B. The role has the privileges to administer the PDB.
- C. No privileges are provided with the PDB_DBA role.
- D. The role has the privileges to create and manage users within the PDB.
正解：B
解説：
A .True. PDB_DBA grants admin rights (e.g., CREATE SESSION, ALTER SYSTEM) within the PDB.
B .False. DDL on objects requires ownership or explicit grants.
C .False. User management needs CREATE USER privilege, not inherent.
D .False. It includes multiple privileges, not none.
質問 # 58
Examine this command: ALTER DATABASE MOVE DATAFILE '\u01/sales1.dbf' TO '\u01/sales01.dbf' REUSE; Which two statements are true?
- A. The file is renamed and stored in the same location.
- B. DML may be performed on tables with one or more extents in this data file during the execution of this command.
- C. The tablespace containing SALES1.DBF must be altered OFFLINE before executing the command.
- D. The tablespace containing SALES1.DBF must be altered READ ONLY before executing the command.
- E. If Oracle Managed Files (OMF) is used, then the file is renamed but moved to DB_CREATE_FILE_DEST.
正解：A、B
解説：
This command moves/renames a data file online. Let's evaluate:
A . DML may be performed on tables with one or more extents in this data file during the execution of this command.
True. Introduced in 12c and refined in 23ai, MOVE DATAFILE is an online operation, allowing DML (e.g., INSERT, UPDATE) on tables within the file. Oracle ensures consistency via redo and undo.
Mechanics:The file is copied to the new location/name while tracking changes, then switched atomically.
Practical Use:Minimizes downtime in production systems.
B . If Oracle Managed Files (OMF) is used, then the file is renamed but moved to DB_CREATE_FILE_DEST.
False. With OMF, omitting the TO clause would place the file in DB_CREATE_FILE_DEST, but here, TO '\u01/sales01.dbf' explicitly specifies the target, overriding OMF defaults.
Mechanics:OMF only applies if the destination is unspecified (e.g., MOVE DATAFILE ... without TO).
Why Incorrect:Explicit path trumps OMF behavior.
C . The tablespace containing SALES1.DBF must be altered READ ONLY before executing the command.
False. READ ONLY isn't required; the operation is online and supports active use.
Why Incorrect:Conflicts with Oracle's online move feature.
D . The file is renamed and stored in the same location.
True. The command renames /u01/sales1.dbf to /u01/sales01.dbf (correcting \u01 to /u01 as a Windows/Unix typo), keeping it in /u01/. REUSE allows overwriting if sales01.dbf exists.
Mechanics:File is copied and renamed in-place within the same filesystem directory.
E . The tablespace containing SALES1.DBF must be altered OFFLINE before executing the command.
False. Offline mode isn't needed; the online move handles activetablespaces.
質問 # 59
Which two statements are true about undo segments and the use of undo by transactions in an Oracle database instance?
- A. A single transaction may use multiple undo segments simultaneously.
- B. Undo segments can wrap around to the first extent when a transaction fills the last extent of the undo segment.
- C. Undo segments can be stored in the SYSTEM tablespace.
- D. Undo segments can extend when a transaction fills the last extent of the undo segment.
- E. Undo segments can be stored in the SYSAUX tablespace.
正解：A、D
解説：
A .False. Undo is stored in a dedicated undo tablespace, not SYSTEM.
B .True. Large transactions can span multiple undo segments.
C .False. Undo isn't stored in SYSAUX.
D .True. Undo segments extend as needed, space permitting.
E .False. Undo doesn't "wrap"; new extents are allocated.
質問 # 60
In the SPFILE of a single instance database, LOCAL_LISTENER is set to LISTENER_1. The TNSNAMES.ORA file in $ORACLE_HOME/network/admin in the database home contains: LISTENER_1 = (ADDRESS = (PROTOCOL = TCP)(HOST = host1.abc.com)(PORT = 1521)). Which statement is true?
- A. LISTENER_1 must also be defined in the LISTENER.ORA file to enable dynamic service registration.
- B. There are two listeners named LISTENER and LISTENER_1 running simultaneously using port 1521 on the same host as the database in LISTENERS.
- C. The LREG process registers services dynamically with the LISTENER_1 listener.
- D. The definition for LISTENER_1 requires a CONNECT_DATA section to enable dynamic service registration.
- E. Dynamic service registration cannot be used for this database instance.
正解：C
解説：
Dynamic service registration allows a database to automatically register its services with a listener without manual configuration in LISTENER.ORA. Let's analyze each option:
A . The definition for LISTENER_1 requires a CONNECT_DATA section to enable dynamic service registration.
False. The CONNECT_DATA section is part of a client-side TNSNAMES.ORA entry for connecting to a service, not for listener registration. Dynamic registration is handled by the database's LREG (Listener Registration) process, which uses the LOCAL_LISTENER parameter to locate the listener's address (e.g., host1.abc.com:1521). No CONNECT_DATA is needed in the listener address definition itself. This option confuses client connection syntax with listener configuration.
Mechanics:The listener address in TNSNAMES.ORA (LISTENER_1) is sufficient for LREG to find and register with it, as long as the listener is running at that address.
B . LISTENER_1 must also be defined in the LISTENER.ORA file to enable dynamic service registration.
False. Dynamic registration doesn't require the listener to be explicitly defined in LISTENER.ORA. The LOCAL_LISTENER parameter pointing to LISTENER_1 (resolved via TNSNAMES.ORA) tells LREG where to register services. If the listener is running on host1.abc.com:1521, LREG will find it without a LISTENER.ORA entry. However, LISTENER.ORA is needed tostartthe listener process, but that's separate from dynamic registration.
Practical Note:If LISTENER.ORA isn't configured, a default listener might run on port 1521, but the question implies LISTENER_1 is operational.
C . The LREG process registers services dynamically with the LISTENER_1 listener.
True. In Oracle 23ai, the LREG background process (replacing PMON's registration role in earlier versions) dynamically registers database services with listeners specified by LOCAL_LISTENER. Here, LOCAL_LISTENER=LISTENER_1 resolves to host1.abc.com:1521 via TNSNAMES.ORA. LREG periodically sends service information (e.g., service names, instance details) to the listener, enabling clients to connect without static configuration.
Mechanics:LREG uses the TNS alias (LISTENER_1) to locate the listener's IP and port, registers services like orcl or orclpdb, and updates the listener's service table. This happens automatically every 60 seconds or on significant events (e.g., instance startup).
D . Dynamic service registration cannot be used for this database instance.
False. The setup (LOCAL_LISTENER set and a valid TNSNAMES.ORA entry) explicitly supports dynamic registration. No blockers (e.g., REGISTRATION_EXCLUDED_LISTENERS) are mentioned, so LREG can function normally.
E . There are two listeners named LISTENER and LISTENER_1 running simultaneously using port 1521 on the same host as the database in LISTENERS.
False. The question mentions only LISTENER_1 in the SPFILE and TNSNAMES.ORA. There's no evidence of a second listener (LISTENER) or a LISTENERS configuration (possibly a typo). Two listeners can't share the same port (1521) on the same host due to port conflicts unless explicitly configured with different IPs, which isn't indicated here.
質問 # 61
What are the three components of Oracle Database Automatic Maintenance Tasks?
- A. A diagnostic system that collects database error logs and details about database failures that can be found to diagnose complete file.
- B. A set of tasks that are started automatically at regular intervals to perform maintenance operations on the database.
- C. The maintenance windows managed by Oracle Database Scheduler, which are predefined time intervals permitting scheduled tasks.
- D. A packaging system that allows you to combine all error and failure logs to share with Oracle Support.
- E. A database alert log that stores details about major database operations and errors, which is used to manage cluster performance.
- F. Oracle Database Resource Manager, which enables you to manage and configure system resources used by the Automatic Maintenance Tasks.
正解：B、C、F
解説：
A .False. Diagnostic collection is ADR, not AMT.
B .True. Resource Manager allocates resources to AMTs.
C .True. Scheduler defines maintenance windows.
D .False. Packaging is IPS/ADR, not AMT.
E .False. Alert log is separate from AMTs.
F .True. Tasks like stats collection are AMTs.
質問 # 62
How do you validate that the database was migrated to Unified Auditing?
- A. By executing DBMS_AUDIT_MGMT PL/SQL package in Verify mode.
- B. By querying the DBA_UNIFIED_AUDIT_OPTION view.
- C. By using the LSINVENTORY Command to query the Oracle Database Software Library.
- D. By querying V$OPTION for parameter Unified Auditing.
正解：D
解説：
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.
質問 # 63
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Oracle 1Z0-182 認定試験の出題範囲：
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試験問題と解答は1Z0-182学習ガイド問題解答：https://www.goshiken.com/Oracle/1Z0-182-mondaishu.html
練習用1Z0-182にはGoShiken顕著な問題集はあなたをOracle Database 23ai Administration Associate試験合格させます合格させる：https://drive.google.com/open?id=1A5z4cfMvOYnc4Hvx5d8TcILbAaURjZCj