QUIZ 2025 ORACLE 1Z1-182–RELIABLE FREE BRAINDUMPS

Quiz 2025 Oracle 1Z1-182–Reliable Free Braindumps

Quiz 2025 Oracle 1Z1-182–Reliable Free Braindumps

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Oracle Database 23ai Administration Associate Sample Questions (Q90-Q95):

NEW QUESTION # 90
Which advisor is used to detect missing or stale object statistics?

  • A. SQL Access Advisor
  • B. SQL Tuning Advisor
  • C. SQL Performance Analyzer
  • D. SQL Statistics Advisor

Answer: D

Explanation:
B .True. The SQL Statistics Advisor (new in 23ai) identifies stale or missing statistics. Others focus on tuning, performance analysis, or access paths.


NEW QUESTION # 91
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. Specify a path in the DATAFILE clause of the command specifying 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. Ensure that DB_RECOVERY_FILE_DEST and DB_CREATE_FILE_DEST each specify locations with at least 50 MB of available space.
  • D. Add the AUTOEXTEND ON clause with NEXT set to 100M.
  • E. Ensure that DB_CREATE_FILE_DEST specifies a location with at least 100 MB of available space.

Answer: C,E

Explanation:
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.


NEW QUESTION # 92
Which two SQL Plan Management Advisor tasks are part of Automatic Maintenance Tasks?

  • A. The Automatic SQL Performance Analyzer task, which is used to provide details about impact of database changes to application SQL batch.
  • B. The Automatic Index Advisor task, which is used to create and maintain table indexes based on the DML load and operations.
  • C. The Automatic SQL Plan Management Evolve Advisor task, which evolves plans that have recently been added as the SQL plan baseline for statements.
  • D. The Automatic SQL Access Advisor task, which is used to manage an application SQL load.
  • E. The Automatic SQL Tuning Advisor tasks, which would examine the performance of high-load SQL statements and make recommendations for those statements.

Answer: C,E

Explanation:
Automatic Maintenance Tasks (AMTs) in 23ai optimize database performance. Let's explore:
A .False. SQL Access Advisor exists but isn't an AMT; it's manual or invoked separately.
B .False. SQL Performance Analyzer assesses change impacts but isn't part of AMTs.
C .False. No "Automatic Index Advisor" exists as an AMT; Auto Index is a separate feature.
D .True. The SPM Evolve Advisor task (part of ORA$AUTOTASK) automatically evolves SQL plan baselines, testing and accepting new plans.
Mechanics:Runs in maintenance windows, managed by DBMS_SPM.
E .True. SQL Tuning Advisor (STA) runs automatically via AMTs, tuning high-load SQL.
Mechanics:Identifies candidates from AWR and suggests indexes, profiles, etc.


NEW QUESTION # 93
Which two statements are true regarding Oracle database space management within blocks managed by Automatic Segment Space Management (ASSM)?

  • A. Update operations always relocate rows into blocks with free space appropriate to the length of the row being updated.
  • B. ASSM assigns blocks to one of the four fullness categories based on what percentage of the block is allocated for rows.
  • C. The first block with enough free space to accommodate a row being inserted will always be used for that row.
  • D. Insert operations always insert new rows into blocks with free space appropriate to the length of the row being inserted.
  • E. PCTFREE defaults to 10% for all blocks in all segments for all compression methods.

Answer: B,D

Explanation:
A .True. ASSM categorizes blocks (e.g., 0-25%, 25-50%) for efficient space use.
B .False. Updates may cause chaining/migration, not always relocation.
C .True. ASSM optimizes inserts into suitable blocks.
D .False. ASSM uses a bitmap, not necessarily the first block.
E .False. PCTFREE is segment-specific, not universally 10%.


NEW QUESTION # 94
In which two ways would you disable timing information collected for wait events and much of the performance monitoring capability of the database?

  • A. By executing the PL/SQL procedure DBMS_TIME_STATISTIC.DISABLE(TRUE).
  • B. By setting the TIMED_STATISTICS system parameter to FALSE.
  • C. By setting the TIMED_STATISTICS_LEVEL system parameter to FALSE.
  • D. By setting the STATISTICS_LEVEL parameter to BASIC.
  • E. By executing the PL/SQL procedure DBMS_TIME_STATISTIC.LEVEL(BASIC).

Answer: B,D

Explanation:
A .True. TIMED_STATISTICS = FALSE disables timing data collection.
B .False. No such procedure exists.
C .False. No TIMED_STATISTICS_LEVEL parameter exists.
D .True. STATISTICS_LEVEL = BASIC disables most performance monitoring.
E .False. No such procedure exists.


NEW QUESTION # 95
......

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