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Oracle Database 23ai Administration Associate Sample Questions (Q61-Q66):

NEW QUESTION # 61
Your database instance is started with an SPFILE. A PFILE is also available. You execute this command: ALTER SYSTEM SET DB_CACHE_SIZE=100K; Where does the value change?

A. In the SPFILE, PFILE, and memory
B. Only in the SPFILE
C. In the SPFILE and memory
D. Only in memory
E. In the SPFILE and PFILE

Answer: C

Explanation:
B .True. Without SCOPE, ALTER SYSTEM defaults to BOTH (memory and SPFILE); PFILE isn't updated unless manually recreated.

NEW QUESTION # 62
Which two statements are true about database instances and Real Application Clusters (RAC)?

A. A RAC database must have two or more instances.
B. Two RAC databases can share their instances.
C. A RAC database must have three or more instances.
D. A RAC database can have instances on separate servers.
E. A RAC database can have one instance.

Answer: D,E

Explanation:
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.

NEW QUESTION # 63
What are the three components of Oracle Database Automatic Maintenance Tasks?

A. A set of tasks that are started automatically at regular intervals to perform maintenance operations on the database.
B. The maintenance windows managed by Oracle Database Scheduler, which are predefined time intervals permitting scheduled tasks.
C. A diagnostic system that collects database error logs and details about database failures that can be found to diagnose complete file.
D. A database alert log that stores details about major database operations and errors, which is used to manage cluster performance.
E. A packaging system that allows you to combine all error and failure logs to share with Oracle Support.
F. Oracle Database Resource Manager, which enables you to manage and configure system resources used by the Automatic Maintenance Tasks.

Answer: A,B,F

Explanation:
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.

NEW QUESTION # 64
Which three tasks are performed by background processes in an Oracle database instance?

A. Reading database blocks into the buffer cache.
B. Registering services with Oracle Net listeners.
C. Writing redo to log files.
D. Creating dedicated server connections.
E. Writing dirty database block images from the buffer cache.
F. Reading database blocks into the buffer cache.

Answer: B,C,E

Explanation:
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.

NEW QUESTION # 65
Which two tasks can you perform using DBCA for databases?

A. Register a new database with an available Enterprise Manager Management server.
B. Configure incremental backups for a new database.
C. Enable flashback database for an existing database.
D. Configure a nonstandard block size for a new database.
E. Change the standard block size of an existing database.

Answer: A,D

Explanation:
A .False. Backups are configured via RMAN, not DBCA.
B .True. DBCA allows nonstandard block sizes during DB creation.
C .True. DBCA can register new DBs with EM.
D .False. Block size is fixed post-creation.
E .False. Flashback is enabled via SQL, not DBCA for existing DBs.

NEW QUESTION # 66
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