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Oracle 1z1-084トレーニング資料、1z1-084全真問題集

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これらの問題を解決するための基本的な方法は、社会の発展よりも速いスピードで成長することです。現場では、Oracle認定を取得して、自分自身を改善し、より良いあなたとより良い未来を目指してください。それにより、あなたはあなたの職業で認められます。 1z1-084試験トレントは、より大企業に注意を向けさせる能力を証明できます。その後、より良い仕事を取得し、適切な職場に行くための選択肢があります。そして、1z1-084試験問題は、98％以上の高い品質と高い合格率で有名です。 1z1-084学習ガイドをお試しください。

Oracle 1Z0-084認定は、ITの専門家がOracle Database 19Cのパフォーマンスとチューニング管理の専門知識を実証する優れた方法です。この認定は業界で非常に尊敬されており、専門家が自分のキャリアを前進させ、より挑戦的な役割を引き受けるのに役立ちます。適切な準備と研究により、候補者は試験に合格し、認定されたOracle Database 19Cのパフォーマンスとチューニングの専門家になることができます。

オラクル1Z0-084認定試験は、Oracle Database 19cのパフォーマンス管理に深い理解を持つことを求める上級レベルの試験です。候補者は、さまざまなパフォーマンスチューニング技術を経験し、パフォーマンスを監視・管理するために使用されるツールやユーティリティに精通している必要があります。また、パフォーマンスの問題をトラブルシューティングし、データベースを最大効率で最適化する能力を持っている必要があります。

>> Oracle 1z1-084トレーニング資料 <<

1z1-084全真問題集 & 1z1-084最新知識

実際、私たちは1z1-084試験参考書に関するサービスとお客様に対する忠実がずっと続いています。だから、1z1-084試験参考書に関連して、何か質問がありましたら、遠慮無く私たちとご連絡致します。私たちのサービスは２４時間で、短い時間で回答できます。私たちの1z1-084試験参考書は、あなたが1z1-084試験に合格する前に最高のサービスを提供することを保証します。これは確かに大きなチャンスです。絶対見逃さないです。

Oracle Database 19c Performance and Tuning Management 認定 1z1-084 試験問題 (Q48-Q53):

質問 # 48
Examine this statement and output:

Which three statements are true?

A. Session 8779 may be waiting for a user or application response.
B. Session 8779 may be waiting due to a network problem.
C. Session 9857 waited 1354 seconds for another process, which was also waiting for a transaction to end.
D. Both 9822 and 8779 sessions are waiting for operating system resources.
E. Session 9857 is not waiting.
F. Session 9822 will always stop waiting if the session that owns the TX enqueue issues a COMMIT statement as session 9822 is the first session in the transaction queue.

正解：A、B、F

解説：
For this SQL statement and output, we can analyze theEVENTcolumn to understand the type of wait:
B: The event "SQL*Net message from client" typically indicates that the session is waiting for a response from the client. This can be due to a network issue, user response, or an application processing delay.
E: The event "SQL*Net message from client" also implies that the session is idle waiting for the client (a user or an application) to send a request to the server. This event usually indicates that the session is not actively working but is instead waiting for the next command.
F: The wait event "enq: TX - row lock contention" suggests that session 9822 is waiting for a row-level lock held by another session. If the holding session issues a COMMIT or ROLLBACK, the lock will be released, and session 9822 will stop waiting. Since this session is experiencing row lock contention, it implies it's waiting for a specific transaction to complete.
References:
* Oracle Database Reference, 19c
* Oracle Wait Events Documentation

質問 # 49
Examine these statements and output:

What parameter change activates the generation and use of SQL Plan Directives7

A. optimizer_capture_sql_plan_baselines_TRUE
B. optimizer_dynamic_sampling=11
C. optimizer_features_enable=12.2.0.1
D. optimizer_adaptive_plans=TRUE
E. optimizer_adaptive_statistics = TRUE

正解：E

解説：
The optimizer_adaptive_statistics parameter, when set to TRUE, enables the optimizer to use adaptive statistics, such as SQL Plan Directives, to help improve plans by automatically adjusting them based on the actual execution statistics.
References:
* Oracle Database SQL Tuning Guide, 19c

質問 # 50
Which two options are part of a Soft Parse operation?

A. Shared Pool Memory Allocation
B. Syntax Check
C. Semantic Check
D. SQL Row Source Generation
E. SQL Optimization

正解：C

質問 # 51
The CURS0R_SHARING and OPTIMIZER_CAPTURE_SQL_PLAN_BASELINES parameters are set to default. The top five wait events in an awr report are due to a large number of hard parses because of several almost identical SQL statements.
Which two actions could reduce the number of hard parses?

A. Set the CURSOR_SHARING parameter to FORCE.
B. Increase the size of the library cache.
C. Set OPTIMIZER_CAPTURE_SQL_PLAN_BASELINESto TRUE.
D. Create the RECYCLE cache and cache tables accessed by the SQL statements.
E. Create the KEEP cache and cache tables accessed by the SQL statements.

正解：A、B

解説：
To reduce the number of hard parses due to several almost identical SQL statements, you can take the following actions:
* C (Correct):Increasing the size of the library cache can help reduce hard parses by providing more
* memory to store more execution plans. This allows SQL statements to be shared more effectively.
* E (Correct):Setting theCURSOR_SHARINGparameter toFORCEwill cause Oracle to replace literals in SQL statements with bind variables, which can significantly reduce the number of hard parses by making it more likely that similar SQL statements will share the same execution plan.
The other options do not directly impact the number of hard parses:
* A (Incorrect):Creating the KEEP cache and caching tables accessed by the SQL statements can improve performance for those tables, but it does not directly reduce the number of hard parses.
* B (Incorrect):Creating the RECYCLE cache and caching tables accessed by the SQL statements can make it more likely that objects will be removed from the cache quickly, which does not help with hard parse issues.
* D (Incorrect):SettingOPTIMIZER_CAPTURE_SQL_PLAN_BASELINEStoTRUEcan help stabilize SQL execution plans but will not reduce the number of hard parses. This parameter is used to automatically capture SQL plan baselines for repeatable SQL statements, which can prevent performance regressions due to plan changes.
References:
* Oracle Database Performance Tuning Guide:Minimizing Hard Parses
* Oracle Database SQL Tuning Guide:CURSOR_SHARING

質問 # 52
You need to collect and aggregate statistics for the ACCTG service and PAYROLL module, and execute:

Where do you find the output of this command?

A. By viewing V$SERVICE_STATS
B. In the current working directory
C. In $ORACLE_BASE/diag/rdbms/<db unique name>/<instance name>/trace
D. By viewing V$SERV_MOD_ACT_STATS

正解：D

解説：
When you enable statistics gathering for a specific service and module using DBMS_MONITOR.SERV_MOD_ACT_STAT_ENABLE, the output is aggregated and can be viewed using theV$SERV_MOD_ACT_STATSdynamic performance view. This view contains the cumulative statistics of database activity broken down by service and module, which is exactly what you collect when executing the provided command.
* B (Incorrect):While many types of trace files are located in the Diagnostic Destination directory (
$ORACLE_BASE/diag), the aggregated statistics for services and modules are not written to trace files but are instead viewable through dynamic performance views.
* C (Incorrect):TheV$SERVICE_STATSview provides service-level statistics but does not provide the
* combined service/module-level breakdown.
* D (Incorrect):The output of the PL/SQL block is not written to a file in the current working directory; it is stored in the data dictionary and accessible via dynamic performance views.
References:
* Oracle Database PL/SQL Packages and Types Reference:DBMS_MONITOR
* Oracle Database Reference:V$SERV_MOD_ACT_STATS

質問 # 53
......

私たちは絶えず1z1-084スタディガイドを改善および更新し、時代の開発ニーズと業界のトレンドの変化に応じて、新しい血液を注入します。私たちは、テスト1z1-084認定に関するすべての関連知識を最も簡単で効率的かつ直感的な方法で学習者に教えるように最善を尽くします。専門家に高い報酬を支払って、1z1-084試験準備の作成に彼らが最大の役割を果たすようにします。国際および国内市場での1z1-084テスト問題の割合は常に増加しています。

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