1Z0-084 Latest Dump - Latest 1Z0-084 Test Camp

P.S. Free & New 1Z0-084 dumps are available on Google Drive shared by ITexamReview: https://drive.google.com/open?id=1c1wgcolrMHVHc8D5UkXE3EpfNMpGcrJ4

If you are now determined to go to research, there is still a little hesitation in product selection. 1Z0-084 exam prep offers you a free trial version! You can choose one or more versions that you are most interested in, and then use your own judgment. 1Z0-084 Exam Materials really hope that every user can pick the right 1Z0-084 study guide for them. If you really lack experience, you do not know which one to choose. You can consult our professional staff.

Oracle 1Z0-084 exam covers a wide range of topics related to performance tuning and management of Oracle Database 19c. 1Z0-084 exam tests the candidate's ability to identify and troubleshoot performance issues, optimize database performance, and implement performance-related features and functionalities. 1Z0-084 Exam also covers topics such as database monitoring, capacity planning, and performance tuning methodologies.

>> 1Z0-084 Latest Dump <<

Latest 1Z0-084 Test Camp - 1Z0-084 Best Practice

You may feel astonished and doubtful about this figure; but we do make our 1Z0-084 exam dumps well received by most customers. Better still, the 98-99% pass rate has helped most of the candidates get the certification successfully, which is far beyond that of others in this field. In recent years, supported by our professional expert team, our 1Z0-084 test braindumps have grown up and have made huge progress. We pay emphasis on variety of situations and adopt corresponding methods to deal with. More successful cases of passing the 1Z0-084 Exam can be found and can prove our powerful strength. As a matter of fact, since the establishment, we have won wonderful feedback and ceaseless business, continuously working on developing our 1Z0-084 test prep. We have been specializing 1Z0-084 exam dumps many years and have a great deal of long-term old clients, and we would like to be a reliable cooperator on your learning path and in your further development.

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

NEW QUESTION # 17
A database supporting a mixed workload is hosted on a server with 64 CPUs.
A large number of free buffer waits and buffer busy waits occur affecting performance.
The buffer cache size was then increased but after a few hours, the same wait events occur more often than before the change.
Examine these parameter settings:

Which two actions can help reduce the number of these waits7

A. Increasing the size of MEMORYTARGET
B. increasing the value of DBWRITERPROCESSES to 64,
C. reducing the values of DB_FILE_MULTILOCK_READ_COUNT to 64
D. setting dbwr_io_slaves to 64
E. increasing the value of DB_FILE_MULTIBLOCK_READ_COUNT to 128

Answer: B,D

Explanation:
Given a server with 64 CPUs, if the buffer cache size increase did not alleviate free buffer waits and buffer busy waits, one can look into optimizing I/O and the efficiency of the DB writer processes.
C: Setting theDBWR_IO_SLAVESparameter to a non-zero value, such as the number of CPUs, would initiate I/O slave processes to assist the DB writer process. This can help reduce I/O contention when writing from the buffer cache to disk, particularly for systems without asynchronous I/O capabilities.
D: Increasing the value ofDBWRITERPROCESSESenables multiple DB writer processes to be active simultaneously. In a system with many CPUs, such as 64, increasing this value can improve the write throughput to disk and potentially reduce buffer busy waits.
References:
* Oracle Database Reference, 19c
* Oracle Database Performance Tuning Guide, 19c

NEW QUESTION # 18
An Oracle 19c database uses default values for all optimizer initialization parameters.
After a table undergoes partition maintenance, a large number of wait events occur for:
cursor: pin S wait on X
Which command reduces the number of these wait events?

A. ALTER SYSTEM SET CURSOR_SPACE_FOR_TIME - TRUE;
B. ALTER SYSTEM SET SESSION CACHED CURSORS = 500;
C. ALTER SYSTEM SET CURSOR_SHARING = FORCE;
D. ALTER SYSTEM SET CURSOR_INVALIDATION = DEFERRED;

Answer: D

Explanation:
Thecursor: pin S wait on Xwait event suggests contention for a cursor pin, which is associated with mutexes (a type of locking mechanism) that protect the library cache to prevent concurrent modifications. This issue can often be alleviated by deferring the invalidation of cursors until the end of the call to reduce contention.
The correct command to use would be:
* C (Correct):ALTER SYSTEM SET CURSOR_INVALIDATION=DEFERRED;This setting defers the invalidation of dependent cursors until the end of the PL/SQL call, which can reduce thecursor: pin S wait on Xwait events.
The other options are incorrect in addressing this issue:
* A (Incorrect):SettingCURSOR_SHARINGtoFORCEmakes the optimizer replace literal values with bind variables. It doesn't address the contention for cursor pins directly.
* B (Incorrect):CURSOR_SPACE_FOR_TIME=TRUEaims to reduce the parsing effort by keeping cursors for prepared statements open. It may increase memory usage but does not directly resolve cursor: pin S wait on Xwaits.
* D (Incorrect):IncreasingSESSION_CACHED_CURSORScaches more session cursors but doesn't necessarily prevent the contention indicated by thecursor: pin S wait on Xwait events.
References:
* Oracle Database Reference:CURSOR_INVALIDATION
* Oracle Database Performance Tuning Guide:Reducing Cursor Invalidation

NEW QUESTION # 19
During which application lifecycle phase do you take baselines?

A. Deployment
B. Testing
C. Design and development
D. Migration or upgrade
E. Production

Answer: E

Explanation:
Baselines are typically taken during the production phase of the application lifecycle. They provide a snapshot of performance metrics under normal operating conditions which can be used for comparison against future performance. Baselines are essential for understanding how the system performs under its typical workload and for detecting deviations from this expected performance over time, especially after changes like migrations, upgrades, or significant changes in user activity.
References
* Oracle Database 19c Performance Tuning Guide - Managing Performance Through Baselines

NEW QUESTION # 20
SGA_TARGET and PGA_AGGREGATE_TARGET are configured to nonzero values.
MEMORY_target is then set to a nonzero value but memory_MAX_TARGET is not set.
Which two statements are true?

Answer: D,G

Explanation:
When MEMORY_TARGET is set to a nonzero value, Oracle automatically manages the memory allocation between the System Global Area (SGA) and the Program Global Area(PGA). If MEMORY_MAX_TARGET is not explicitly set, Oracle will behave in the following manner:
* MEMORY_MAX_TARGET will default to the value of MEMORY_TARGET, assuming the platform allows for the value of MEMORY_TARGET to be increased dynamically. This means that MEMORY_TARGET represents both the initial allocation and the maximum limit for the dynamically managed memory unless MEMORY_MAX_TARGET is specified differently.
* If MEMORY_TARGET is set to a value that is less than the sum of the current values of SGA_TARGET and PGA_AGGREGATE_TARGET, Oracle will use the higher sum as the default value for MEMORY_MAX_TARGET to ensure that there is adequate memory for both areas. The database instance will not start if MEMORY_TARGET is not sufficient to accommodate the combined SGA and PGA requirements.
References
* Oracle Database Administrator's Guide 19c: Automatic Memory Management
* Oracle Database Performance Tuning Guide 19c: Using Automatic Memory Management

NEW QUESTION # 21
You need to transport performance data from a Standard Edition to an Enterprise Edition database. What is the recommended method to do this?

A. Export the data by using expdp from the ftatspack repository and import it by using impdp into the AWR repository.
B. Export the data by using the exp utility and parameter file spuexp.par from the Statspack repository and import it by using imp into a dedicated Statspack schema on the destination.
C. Export the data by using expdp from Statspack and import it by using
$ORACLE_HOME/rdbms/admin/awrload into the AWRrepository.
D. Export the data by using the expdp utility and parameter file spuexp.par from the Statspack repository and import it by using impdp into Export the data by using expdp from the Statspack repository and import it by using impdp into the AWR repository.

Answer: B

Explanation:
To transport performance data from an Oracle Database Standard Edition, which uses Statspack, to an Enterprise Edition database, which uses AWR, you must consider the compatibility of data structures and repository schemas between these tools. The recommended method is:
* D (Correct):Export the data using theexputility with a parameter file appropriate for Statspack (like spuexp.par) from the Statspack repository and import it into a dedicated Statspack schema on the destination. Since Statspack and AWR use different schemas, it's not recommended to import Statspack data directly into the AWR repository.
The other options are incorrect because:
* A (Incorrect):expdpis not designed to export from Statspack, andawrloadis intended for loading from an AWR export file, not a Statspack export.
* B (Incorrect):Althoughexpdpandimpdpare used for exporting and importing data, the AWR repository schema is different from the Statspack schema, so importing Statspack data directly into the AWR repository is not recommended.
* C (Incorrect):Usingexpdpto export from Statspack and then importing directly into the AWR repository is not the correct approach due to the schema differences between Statspack and AWR.
References:
* Oracle Database Performance Tuning Guide:Migrating from Statspack to AWR

NEW QUESTION # 22
......

As the old saying goes, "Everything starts from reality, seeking truth from facts." This means that when we learn the theory, we end up returning to the actual application. Therefore, the effect of the user using the latest 1Z0-084 exam dump is the only standard for proving the effectiveness and usefulness of our products. I believe that users have a certain understanding of the advantages of our 1Z0-084 Study Guide, but now I want to show you the best of our 1Z0-084 training Materials - Amazing pass rate. Based on the statistics, prepare the exams under the guidance of our 1Z0-084 practice materials, the user's pass rate is up to 98% to 100%, And they only need to practice latest 1Z0-084 exam dump to hours.

Latest 1Z0-084 Test Camp: https://www.itexamreview.com/1Z0-084-exam-dumps.html

DOWNLOAD the newest ITexamReview 1Z0-084 PDF dumps from Cloud Storage for free: https://drive.google.com/open?id=1c1wgcolrMHVHc8D5UkXE3EpfNMpGcrJ4

0

Course Enrolled

0

Course Completed

Paul Fox Paul Fox

About me

1Z0-084 Latest Dump - Latest 1Z0-084 Test Camp

Latest 1Z0-084 Test Camp - 1Z0-084 Best Practice

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

0

0

Sign in