Wealth Academy Africa

Matt Brown Matt Brown

0 Course Enrolled • 0 Course Completed

Biography

Reliable 1z1-084 Exam Registration & New 1z1-084 Braindumps Pdf

There is an irreplaceable trend that an increasingly amount of clients are picking up 1z1-084 study materials from tremendous practice materials in the market. There are unconquerable obstacles ahead of us if you get help from our 1z1-084 Exam Questions. So many exam candidates feel privileged to have our 1z1-084 practice braindumps. And our website is truly very famous for the hot hit in the market and easy to be found on the internet.

Our 1z1-084 cram materials take the clients' needs to pass the test smoothly into full consideration. The questions and answers boost high hit rate and the odds that they may appear in the real exam are high. Our 1z1-084 exam questions have included all the information. Our 1z1-084 cram materials analysis the popular trend among the industry and the possible answers and questions which may appear in the real exam fully. Our 1z1-084 Latest Exam file stimulate the real exam's environment and pace to help the learners to get a well preparation for the real exam in advance.

>> Reliable 1z1-084 Exam Registration <<

New Oracle 1z1-084 Braindumps Pdf & New 1z1-084 Test Tips

Dear everyone, to get yourself certified by our 1z1-084 exam prep. We offer you the real and updated DumpsKing 1z1-084 study material for your exam preparation. The 1z1-084 online test engine can create an interactive simulation environment for you. When you try the 1z1-084 online test engine, you will really feel in the actual test. Besides, you can get your exam scores after each test. What's more, it is very convenient to do marks and notes. Thus, you can know your strengths and weakness after review your 1z1-084 test. Then you can do a detail study plan and the success will be a little case.

Oracle 1Z0-084 is an exam designed for professionals who want to enhance their knowledge and expertise in performance and tuning management of Oracle Database 19c. Oracle Database 19c Performance and Tuning Management certification exam is designed to validate the knowledge and skills of database administrators, performance analysts, and developers who are responsible for managing and tuning Oracle databases. 1z1-084 Exam Tests the candidate's ability to use various performance tuning tools and techniques to optimize database performance and ensure smooth operation.

Oracle Database 19c Performance and Tuning Management Sample Questions (Q17-Q22):

NEW QUESTION # 17
Multiple sessions are inserting data concurrently into a table that has an LOB column.
At some point in time, one of the sessions cannot find available space in the LOB segment and needs to allocate a new extent.
Which wait event will be raised in the other sessions that need space in the LOB column?

A. enq: TM - contention
B. enq: HW - contention
C. enq: TX - allocate ITL entry
D. enq: SQ - contention

Answer: B

Explanation:
When sessions concurrently insert data into a table with an LOB column and one session needs to allocate a new extent because it cannot find available space, the wait event associated with this contention is "enq: HW - contention". The HW stands for High Water Mark which is related to space allocation in the database segment.
When asession needs to allocate a new extent, it may raise this wait event in other sessions that are also attempting to allocate space in the same LOB segment.
References
* Oracle Database 19c Reference Guide - enq: HW - contention

NEW QUESTION # 18
Examine these statements and output:

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

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

Answer: A

Explanation:
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

NEW QUESTION # 19
Examine this output of a query of VSPGA_TAPGET_ADVICE:

Which statements is true'

A. PGAA_AGGREGATE should be set to at least 800 MB.
B. GGREGATE_TARGET should be set to at least 700 MB.
C. With a target of 800 MB or more, all one-pass execution work areas would be eliminated.
D. With a target of 700 MB or more, all multipass executions work areas would be eliminated.

Answer: D

Explanation:
The V$PGA_TARGET_ADVICE view provides advice on potential performance improvements by adjusting the PGA_AGGREGATE_TARGET parameter. The column ESTD_OVERALLOC_COUNT indicates the estimated number of work areas that would perform multiple passes if the PGA_AGGREGATE_TARGET were set to the size in the TARGET_MB column.
A: According to the output, at the target of 700 MB, the ESTD_OVERALLOC_COUNT is 30. This suggests that if PGA_AGGREGATE_TARGET is set to 700 MB, 30 multipass execution work areas would be required. If we look further down, at the target of 800 MB, the ESTD_OVERALLOC_COUNT is 0, indicating that increasing PGA_AGGREGATE_TARGET to 800 MB or more would eliminate the need for multipass executions, not at 700 MB as initially suggested by the option. Hence, the verified answer derived from the data is slightly nuanced; it should be 800 MB to eliminate all multipass executions.
References:
* Oracle Database Performance Tuning Guide, 19c
* Oracle Database Reference, 19c

NEW QUESTION # 20
You use SQL Tuning Advisor to tune a given SQL statement.
The analysis eventually results in the implementation of a SQL Profile.
You then generate the new SQL Profile plan and enforce it using a SQL PlanBaselinebut forget to disable the SQLProfile and a few days later you find out that the SQL Profile is generating a new execution plan.
Which two statements are true?

A. The SQL Profiles as well as SQL Plan Baseline are implemented using hints, so they both generate the same plan.
B. The conflict between the two plan stability methods results in an error.
C. The execution plan is the one enforced by the SQL Plan Baseline.
D. The execution plan is the one enforced by the SQL Profile.
E. The existence of two concurrent plan stability methods generates a child cursor for every execution.
F. The SQL Plan Baseline must be accepted in order to be used for the execution plan.

Answer: D,F

Explanation:
When both a SQL Profile and a SQL Plan Baseline are in place, the SQL Profile has a stronger preference and the optimizer is more likely to choose the execution plan from the SQL Profile.
C: A SQL Profile is generally more influential than a SQL Plan Baseline because it contains additional statistics and directives that help the optimizer to generate a more efficient execution plan. If both exist, the optimizer will use the profile's plan unless the baseline's plan is proven to be better through the SQL performance monitoring process.
E: SQL Plan Baselines must be accepted before they can be used by the optimizer. If a SQL Plan Baseline is not accepted, it will not be considered for generating the execution plan. Therefore, the presence of an unaccepted SQL Plan Baseline will not automatically force the optimizer to use its plan.
References:
* Oracle Database SQL Tuning Guide, 19c
* Oracle Database Administrator's Guide, 19c

NEW QUESTION # 21
Database performance has degraded recently.
index range scan operations on index ix_sales_time_id are slower due to an increase in buffer gets on sales table blocks.
Examine these attributes displayed by querying DBA_TABLES:

Now, examine these attributes displayed by querying DBA_INDEXES:

Which action will reduce the excessive buffer gets?

A. Re-create index IX_SALES_TIME_ID using ADVANCED COMPRESSION.
B. Partition index IX_SALES_TIME_ID using hash partitioning.
C. Re-create the SALES table sorted in order of index IX_SALES_TIME_ID.
D. Re-create the SALES table using the columns in IX_SALES_TIME_ID as the hash partitioning key.

Answer: A

Explanation:
Given that index range scan operations on IX_SALES_TIME_ID are slower due to an increase in buffer gets, the aim is to improve the efficiency of the index access. In this scenario:
* B (Correct): Re-creating the index using ADVANCED COMPRESSION can reduce the size of the index, which can lead to fewer physical reads (reduced I/O) and buffer gets when the index is accessed, as more of the index can fit into memory.
The other options would not be appropriate because:
* A (Incorrect): Re-creating the SALES table sorted in order of the index might not address the issue of excessive buffer gets. Sorting the table would not improve the efficiency of the index itself.
* C (Incorrect): Using the columns in IX_SALES_TIME_ID as a hash partitioning key for the SALES table is more relevant to data distribution and does not necessarily improve index scan performance.
* D (Incorrect): Hash partitioning the index is generally used to improve the scan performance in a parallel query environment, but it may not reduce the number of buffer gets in a single-threaded query environment.
References:
* Oracle Database SQL Tuning Guide: Managing Indexes
* Oracle Database SQL Tuning Guide: Index Compression

NEW QUESTION # 22
......

If you have tried on our 1z1-084 exam questions, you may find that our 1z1-084 study materials occupy little running memory. So it will never appear flash back. If you want to try our 1z1-084 learning prep, just come to free download the demos which contain the different three versions of the 1z1-084 training guide. And you will find every version is charming. Follow your heart and choose what you like best on our website.

New 1z1-084 Braindumps Pdf: https://www.dumpsking.com/1z1-084-testking-dumps.html

Cookie	Duration	Description
cookielawinfo-checkbox-analytics	11 months	This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Analytics".
cookielawinfo-checkbox-functional	11 months	The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional".
cookielawinfo-checkbox-necessary	11 months	This cookie is set by GDPR Cookie Consent plugin. The cookies is used to store the user consent for the cookies in the category "Necessary".
cookielawinfo-checkbox-others	11 months	This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other.
cookielawinfo-checkbox-performance	11 months	This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Performance".
viewed_cookie_policy	11 months	The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. It does not store any personal data.

Matt Brown Matt Brown

Biography

COOKIE NOTICE