Get Special Discount Offer of 1Z0-084 Certification Exam Sample Questions and Answers [Q16-Q35]

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Get Special Discount Offer of 1Z0-084 Certification Exam Sample Questions and Answers

New 1Z0-084 Dumps For Preparing Oracle Database 19c Certified Oracle Exam Well

NEW QUESTION 16
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 17
Users complain about slowness and session interruptions. Additional checks reveal the following error in the application log:

Which file has additional information about this error?

Alert log

ASH report

Session trace file SQL trace file automatically generated by the error

SQL trace file automatically generated by the error

NEW QUESTION 18
A database instance is suffering poor I/O performance on two frequently accessed large tables.
No Big Table caching occurs in the database.
Examine these parameter settings:

Which are two actions either one of which will allow Big Table caching to occur?

Increasing DB_BIG_TABLE_CACHE_PERCENT_TARGET to at least 50

Setting DB_KEEP_CACHE_SIZE to at least 50M

Increasing DB_BIG_TABLE_CACHE_PERCENT_TARGET to at least 25

Increasing DB_CACHESIZE to 1 G

Setting PARALLEL_DEGREE_POLICYADAPTIVE

Setting PARALLEL_DEGREE_POLICYAUTO

NEW QUESTION 19
You want to reduce the amount of db file scattered read that is generated in the database.You execute the SQL Tuning Advisor against the relevant workload. Which two can be part of the expected result?

recommendations regarding the creation of additional indexes

recommendations regarding rewriting the SQL statements

recommendations regarding the creation of materialized views

recommendations regarding the creation of SQL Patches

recommendations regarding partitioning the tables

NEW QUESTION 20
Which two statements are true about space usage in temporary tablespaces?

When a global temporary table instantiation is too large to fit in memory, space is allocated in a temporary tablespace.

Temporary tablespaces setting Includes quotas to limit temporary space used by a session for that Temporary tablespace.

A sort will fail if a sort to disk requires more disk space and no additional extent can be found/allocated in/for the sort segment.

When a session consumes all temporary tablespace storage, then the session would hang until the temporary space used by that session is cleared.

Lack of temporary tablespace space for sort operations can be prevented by using temporary tablespace groups.

NEW QUESTION 21
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?

enq: SQ – contention

enq: TM – contention

enq: HW – contention

enq: TX – allocate ITL entry

NEW QUESTION 22
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 23
Examine this AWR report 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 24
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?

By viewing V$SERV_MOD_ACT_STATS

In $ORACLE_BASE/diag/rdbms/<db unique name>/<instance name>/trace

By viewing V$SERVICE_STATS

In the current working directory

NEW QUESTION 25
Which two statements are true about session wait information contained in v$session or v$session_wait?

Rows for sessions displaying WAITED UNKNOWN TIME in the STATE column indicate that the session is still waiting.

Rows for sessions that are currently waiting have a wait time of 0.

Rows for sessions that are not waiting might contain the actual wait time for the last event for which they waited.

Rows for sessions that are currently waiting have their wait time incremented every microsecond.

Rows for sessions that are not waiting always contain the total wait time since the session started.

NEW QUESTION 26
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?

By viewing V$SERV_MOD_ACT_STATS

In $ORACLE_BASE/diag/rdbms/<db unique name>/<instance name>/trace

By viewing V$SERVICE_STATS

In the current working directory

NEW QUESTION 27
Examine this statement and its corresponding execution plan:

Which phase introduces the CONCATENATION step?

SQL Semantic Check

SQL Execution

SQL Row Source Generation

SQL Transformation

SQL Adaptive Execution

NEW QUESTION 28
Which application lifecycle phase could be managed reactively?

Design and development

Upgrade or migration

Testing

Production

Deployment

NEW QUESTION 29
Buffer cache access is too frequent when querying the SALES table. Examine this command which executes successfully:
ALTER TABLE SALES SHRINK SPACE;
For which access method does query performance on sales improve?

db file scattered read

db file sequential read

index full scan

index range scan

NEW QUESTION 30
Which three statements are true about tuning dimensions and details of v$sys_time_model and DB time?

Statspack cannot account for high CPU time when CPU TIME is a Top 10 event in DB time. When CPU time is high, SQL tuning may improve performance.

Systems in which CPU time is dominant need more tuning that those in which WAIT TIME is dominant.

The proportion of WAIT TIME to CPU TIME always increases with increased system load.

When WAIT TIME is high, instance tuning may improve performance.

Parse Time Elapsed accounts for successful soft and hard parse operations only.

DB Time accounts for all time used by background processes and user sessions.

NEW QUESTION 31
You want to reduce the amount of db file scattered read that is generated in the database.You execute the SQL Tuning Advisor against the relevant workload. Which two can be part of the expected result?

recommendations regarding partitioning the tables

recommendations regarding the creation of materialized views

recommendations regarding the creation of additional indexes

recommendations regarding rewriting the SQL statements

recommendations regarding the creation of SQL Patches

NEW QUESTION 32
You need to transport performance data from a Standard Edition to an Enterprise Edition database. What is the recommended method to do this?

Export the data by using expdp from Statspack and import it by using
$ORACLE_HOME/rdbms/admin/awrload into the AWRrepository.

Export the data by using expdp from the ftatspack repository and import it by using impdp into the AWR repository.

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.

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.

NEW QUESTION 33
Which two statements are true about disabling Automatic Shared Memory Management (ASMM)?

All auto-tuned SGA components are reset to their original user-defined values.

All SGA components excluding fixed SGA and other internal allocations are readjusted immediately after disabling ASMM.

Both SGA_TARGET and SGA_MAX_SIZE must be set to zero.

All SGA components retain their current sizes at the time of disabling.

The SGA size remains unaffected after disabling ASMM.

It requires a database instance restart to take effect.

NEW QUESTION 34
Which procedure gathers statistics that are always used in the generation of any execution plan?

DBMS_STATS.GATHER_DICTIONARY_STATS

DBMS_STATS.GATHER_FIXED_ OBJECTS_STATS

DBMS_STATS.GATHER_DATABASE_STATS

DBMS_STATS.GATHER_SYSTEM_STATS

NEW QUESTION 35
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

Oracle 1Z0-084 exam is a valuable certification for IT professionals who work with Oracle Database 19c. Certification in this area demonstrates a high level of expertise and can help individuals advance their careers and increase their earning potential. By passing the exam, candidates demonstrate their ability to optimize database performance, which is a critical skill in today’s data-driven business environment.

Earning the Oracle 1Z0-084 certification demonstrates the candidate’s proficiency in database performance and tuning management. Oracle Database 19c Performance and Tuning Management certification is recognized globally and can enhance career opportunities for professionals working in the database administration field. Oracle certification holders are highly valued by employers, as they demonstrate a commitment to ongoing learning and professional development.

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