1Z0-084 Exam Info and Free Practice Test All-in-One Exam Guide Jun-2024 [Q17-Q35]

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1Z0-084 Exam Info and Free Practice Test All-in-One Exam Guide Jun-2024

Pass Oracle 1Z0-084 Actual Free Exam Q&As Updated Dump Jun 17, 2024

If you are a database professional looking to validate your skills in performance and tuning management, then the Oracle 1Z0-084 exam is the right choice for you. Oracle Database 19c Performance and Tuning Management certification not only enhances your credibility in the industry but also opens up new career opportunities. With the right preparation and practice, you can pass 1Z0-084 exam and join the elite group of Oracle certified professionals.

NEW QUESTION 17
What are the least elevated values of statistics_level and C0NTR0LJ4ANAGEMENT_PACK_ACCESS that allow the usage of Monitoring of Database Operations?

STATISTICS_LEVEL=ALL and
CONTROL_MANAGEMENT_PACK_ACCESS=DIAGOSTIC+TUNING

STATISTICS_LEVEL=BASIC and CONTROL_MANAGEMENT_PACK ACCESS=DIAGOSTIC

STATISTICS_LEVEL=TYPICAL and
CONTROL_MANAGEMENT_PACK_ACCESS-DIAGOSTIC*TUNING

STATISTICS_LEVEL=TYPICAL and CONTROL_MANAGEMENT_PACK_ACCESS=DIAGOSTIC

NEW QUESTION 18
Which three types of statistics are captured by statspack with snap level 6?

Parent and child latches

Optimizer execution plans

Plan usage data

Enqueue statistics

Segment-level statistics

NEW QUESTION 19
Examine this command:

What is the maximum number of baselines generated by this command that you can have at any given time?

NEW QUESTION 20
Examine this AWRreport excerpt:

You must reduce the impact of database I/O, without increasing buffer cache size and without modifying the SQL statements.
Which compression option satisfies this requirement?

MN STORE COMPRESS FOR QUERY LOW

STORE COMPRESS

ROW STORE COMPRESS ADVANCED

COLUMN STORE COMPRESS FOR QUERY HIGH

NEW QUESTION 21
Which application lifecycle phase could be managed reactively?

Design and development

Upgrade or migration

Testing

Production

Deployment

NEW QUESTION 22
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?

ALTER SYSTEM SET CURSOR_SHARING = FORCE;

ALTER SYSTEM SET CURSOR_SPACE_FOR_TIME – TRUE;

ALTER SYSTEM SET CURSOR_INVALIDATION = DEFERRED;

ALTER SYSTEM SET SESSION CACHED CURSORS = 500;

NEW QUESTION 23
Which three statements are true about server-generated alerts?

They are notifications from the Oracle Database Server of an existing or impending problem.

They provide notifications but never any suggestions for correcting the identified problems.

They are logged in the alert log.

They can be viewed only from the Cloud Control Database home page.

Their threshold settings can be modified by using DBMS_SERVER_ALERT.

They may contain suggestions for correcting the identified problems.

Server-generated alerts in Oracle Database are designed to notify DBAs and other administrators about issues within the database environment. These alerts can be triggered by a variety of conditions, including threshold-based metrics and specific events such as ORA- error messages. Here’s how these options align with the statements provided:
* A (True):Server-generated alerts are indeed notifications from the Oracle Database Server that highlight existing or impending issues. These alerts are part of Oracle’s proactive management capabilities, designed to inform administrators about potential problems before they escalate.
* C (True):These alerts are logged in the alert log of the Oracle Database. The alert log is a crucial diagnostic tool that records major events and changes in the database, including server-generated alerts.
This log is often the first place DBAs look when troubleshooting database issues.
* F (True):Server-generated alerts may include suggestions for correcting identified problems. Oracle Database often provides actionable advice within these alerts to assist in resolving issues more efficiently. These suggestions can range from adjusting configuration parameters to performing specific maintenance tasks.
Options B, D, and E do not accurately describe server-generated alerts:
* B (False):While the statement might have been true in some contexts, Oracle’s server-generated alerts often include corrective suggestions, making this statement incorrect.
* D (False):Server-generated alerts can be viewed from various interfaces, not just the Cloud Control Database home page. They are accessible through Enterprise Manager, SQL Developer, and directly within the database alert log, among other tools.
* E (False):While it’s true that threshold settings for some alerts can be modified, the method specified, usingDBMS_SERVER_ALERT, is not correct. Threshold settings are typically adjusted through Enterprise Manager or by modifying specific initialization parameters directly.
References:
* Oracle Database Documentation:Oracle Database 19c: Performance Management and Tuning
* Oracle Base: Alert Log and Trace Files
* Oracle Support:Understanding and Managing Server-Generated Alerts

NEW QUESTION 24
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?

Create the KEEP cache and cache tables accessed by the SQL statements.

Create the RECYCLE cache and cache tables accessed by the SQL statements.

Increase the size of the library cache.

Set OPTIMIZER_CAPTURE_SQL_PLAN_BASELINESto TRUE.

Set the CURSOR_SHARING parameter to FORCE.

NEW QUESTION 25
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

increasing the value of DB_FILE_MULTIBLOCK_READ_COUNT to 128

Increasing the size of MEMORYTARGET

setting dbwr_io_slaves to 64

increasing the value of DBWRITERPROCESSES to 64,

reducing the values of DB_FILE_MULTILOCK_READ_COUNT to 64

NEW QUESTION 26
A Standard Edition production database has performance problems for two hours on the same day each week.
Which tool must you use to diagnose the problem?

SQL Performance Analyzer

AWR Compare Periods report

Database Replay

Statspack report

NEW QUESTION 27
Which two options are part of a Soft Parse operation?

Syntax Check

SQL Row Source Generation

SQL Optimization

Shared Pool Memory Allocation

Semantic Check

NEW QUESTION 28
Examine these statements and output:

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

optimizer_features_enable=12.2.0.1

optimizer_capture_sql_plan_baselines_TRUE

optimizer_dynamic_sampling=11

optimizer_adaptive_plans=TRUE

optimizer_adaptive_statistics = TRUE

NEW QUESTION 29
Examine this statement and output:

Which three statements are true?

Both 9822 and 8779 sessions are waiting for operating system resources.

Session 8779 may be waiting due to a network problem.

Session 9857 waited 1354 seconds for another process, which was also waiting for a transaction to end.

Session 9857 is not waiting.

Session 8779 may be waiting for a user or application response.

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.

NEW QUESTION 30
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?

Re-create the SALES table sorted in order of index IX_SALES_TIME_ID.

Re-create index IX_SALES_TIME_ID using ADVANCED COMPRESSION.

Re-create the SALES table using the columns in IX_SALES_TIME_ID as the hash partitioning key.

Partition index IX_SALES_TIME_ID using hash partitioning.

NEW QUESTION 31
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?

The existence of two concurrent plan stability methods generates a child cursor for every execution.

The SQL Profiles as well as SQL Plan Baseline are implemented using hints, so they both generate the same plan.

The execution plan is the one enforced by the SQL Profile.

The execution plan is the one enforced by the SQL Plan Baseline.

The SQL Plan Baseline must be accepted in order to be used for the execution plan.

The conflict between the two plan stability methods results in an error.

NEW QUESTION 32
Which two types of performance problems are reported by ADDM for PDBS?

I/O capacity limits

Excessive checkpoint writes

SGA sizing issues

Top SQL statements

User I/O waits

NEW QUESTION 33
Examine this output of a query of VSPGA_TAPGET_ADVICE:

Which statements is true’

With a target of 700 MB or more, all multipass executions work areas would be eliminated.

PGAA_AGGREGATE should be set to at least 800 MB.

GGREGATE_TARGET should be set to at least 700 MB.

With a target of 800 MB or more, all one-pass execution work areas would be eliminated.

NEW QUESTION 34
This error occurred more than four hours ago in the database:
ORA-04036 PGA memory used by theinstance exceedsPGA_AGGREGATE_LIMIT
You want to know which process and query were at fault.
Which two views should you use for this purpose?

DBA_HIST_ACTIVE_SESS_HISTORY

DBA_HIST_SQLSTAT

DBA_HIST_SQLTEXT

DBA_HIST_PGASTAT

DBA_HIST_PROCESS_MEM_SUMMARY

NEW QUESTION 35
Which two statements are true about cursor sharing?

Setting Cursor_sharing to FORCE can result in a plan that is suboptimal for the majority of values bound to a bind variable when executing a cursor with one or more bind variables.

Adaptive Cursor Sharing guarantees that a suboptimal plan will never be used on any execution of a SQL statement.

Setting optimizer_capture_sql_plan_baselines to TRUE loads all adaptive plans for the same statement into the cursor cache.

Setting cursor_sharing to EXACT prevents Adaptive Cursor Sharing from being used.

Adaptive Cursor Sharing requires histograms on filtered columns, used in equality predicates, to allow different execution plans to be generated for statements whose bound values would normally generate different plans at hard parse time.

Online Questions – Valid Practice 1Z0-084 Exam Dumps Test Questions: https://www.free4dump.com/1Z0-084-braindumps-torrent.html

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