FREE PDF 2025 ORACLE PROFESSIONAL 1Z1-182: VISUAL ORACLE DATABASE 23AI ADMINISTRATION ASSOCIATE CERT TEST

Free PDF 2025 Oracle Professional 1Z1-182: Visual Oracle Database 23ai Administration Associate Cert Test

Free PDF 2025 Oracle Professional 1Z1-182: Visual Oracle Database 23ai Administration Associate Cert Test

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Oracle Database 23ai Administration Associate Sample Questions (Q44-Q49):

NEW QUESTION # 44
Which two statements are true concerning logical and physical database structures?

  • A. A segment might have only one extent.
  • B. A segment can span multiple data files in some tablespaces.
  • C. A segment's blocks can be of different sizes.
  • D. All tablespaces may have one or more data files.
  • E. Segments can span multiple tablespaces.
  • F. A segment's blocks can be of different sizes.

Answer: A,B

Explanation:
False. All blocks in a segment use the tablespace's block size (e.g., 8KB). While a database can have tablespaces with different block sizes (e.g., 8KB, 32KB), a single segment's blocks are uniform, as it resides in one tablespace.
Explanation:
Logical structures (e.g., segments, extents) map to physical structures (e.g., data files, blocks). Let's dissect each option:
A : A segment can span multiple data files in some tablespaces.
True. A segment (e.g., a table or index) is a logical entity stored in a tablespace. In a smallfile tablespace (default in Oracle), a segment's extents can span multiple data files if the tablespace has multiple files and space allocation requires it. This is common in large tables or when autoextend adds new files.
Mechanics:Oracle allocates extents across available data files in a round-robin fashion (with ASSM) or as needed, ensuring the segment's data is distributed. This doesn't apply to bigfile tablespaces, which use a single data file.
Example:A 10GB table in a tablespace with two 5GB data files will span both.
B : Segments can span multiple tablespaces.
False. A segment is confined to a single tablespace. Oracle enforces this to maintain logical separation (e.g., a table's data stays in its assigned tablespace). Partitioned tables can have partitions in different tablespaces, but each partition is a separate segment.
Why Not:The segment header and extent map reside in one tablespace, preventing cross-tablespace spanning for a single segment.
C : A segment might have only one extent.
True. A segment starts with one extent upon creation (e.g., a small table or index). If no further growth occurs, it remains a single-extent segment. This is common with small objects or when INITIAL extent size suffices.
Mechanics:In locally managed tablespaces (default), the initial extent is allocated based on INITIAL or tablespace defaults (e.g., 64KB), and additional extents are added only as needed.
D : All tablespaces may have one or more data files.
False. Bigfile tablespaces are restricted to one data file (up to 128TB). Smallfile tablespaces (traditional) can have multiple data files (up to 1022), but the "all" phrasing makes this false due to bigfile exceptions.
Clarification:The question's intent may assume smallfile tablespaces, but Oracle 23ai supports both types.


NEW QUESTION # 45
Which three statements are true about Automatic Diagnostic Repository (ADR)?

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

Answer: C,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 # 46
You execute the SHUTDOWN ABORT command. Which two statements are true?

  • A. Subsequent instance startup performs media recovery.
  • B. Data files are closed normally.
  • C. Subsequent instance startup performs instance recovery.
  • D. A checkpoint is written.
  • E. Uncommitted transactions are not rolled back by the shutdown.

Answer: C,E

Explanation:
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.


NEW QUESTION # 47
Which two statements are true about advanced connection options supported by Oracle Net for connection to Oracle?

  • A. Load Balancing requires the use of a name server.
  • B. Load Balancing can balance the number of connections to dispatchers when using a Shared Server configuration.
  • C. Connect Time Failover requires the use of Transparent Application Failover (TAF).
  • D. Connect Time Failover requires the connect string to have two or more listener addresses configured.
  • E. Source Routing requires the use of encrypted connections.

Answer: B,D

Explanation:
A .False. Connect Time Failover doesn't need TAF; TAF is for runtime failover.
B .False. Source Routing doesn't mandate encryption.
C .True. Needs multiple addresses (e.g., (ADDRESS_LIST=...)) for failover.
D .False. Load balancing works with tnsnames.ora, no name server required.
E .True. Balances connections across shared server dispatchers.


NEW QUESTION # 48
Which three are benefits of using temp UNDO when performing DML on global temporary tables?

  • A. It permits DML on global temporary tables even if the database is opened read-only.
  • B. It reduces I/Os to the SYSTEM tablespace.
  • C. It reduces the amount of UNDO stored in the UNDO tablespace.
  • D. It reduces the amount of redo generated.
  • E. It reduces I/Os to the SYSAUX tablespace.

Answer: B,C,D

Explanation:
Temp UNDO, introduced in Oracle 12c and refined in 23ai, stores undo for global temporary tables (GTTs) in temporary tablespaces:
A . It permits DML on GTTs even if the database is opened read-only.False. In read-only mode, DML on GTTs is allowed regardless of temp UNDO, as GTT data is session-private, but temp UNDO doesn't specifically enable this.
B . It reduces the amount of UNDO stored in the UNDO tablespace.True. Temp UNDO stores undo in the temporary tablespace, reducing usage of the permanent UNDO tablespace.
C . It reduces I/Os to the SYSTEM tablespace.True. By avoiding permanent undo, it reduces metadata updates in the SYSTEM tablespace related to undo management.
D . It reduces the amount of redo generated.True. Temp UNDO changes are not redo-logged to the same extent as permanent undo, minimizing redo generation.
E . It reduces I/Os to the SYSAUX tablespace.False. SYSAUX is unrelated to undo management; temp UNDO affects temporary and SYSTEM tablespaces.


NEW QUESTION # 49
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