[Q32-Q54] Top Oracle 1z1-084 Courses Online – Updated [Aug-2025]

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Top Oracle 1z1-084 Courses Online – Updated [Aug-2025]

1z1-084 Practice Dumps – Verified By ExamDumpsVCE Updated 57 Questions

To prepare for the Oracle 1Z0-084 certification exam, candidates should have experience with Oracle Database 19c and a solid understanding of performance tuning concepts. There are many resources available to help candidates prepare for the exam, including study guides, practice exams, and training courses. With the right preparation and experience, candidates can demonstrate their proficiency in managing and tuning Oracle databases and earn the Oracle 1Z0-084 certification.

Oracle Database 19c Performance and Tuning Management Exam or the 1Z0-084, is an exam that is specially designed for Oracle Database administrators who are looking to get certified in performance management and tuning. To become an Oracle Database certified professional, you need to pass this certification exam. Passing the exam signifies that you have the necessary knowledge and skills to manage and tune the Oracle 19c database performance.

NEW QUESTION 32
This error occurred more than four hours ago in the database:
ORA-04036 PGA memory used by the instance exceeds PGA_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 33
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 34
Which two statements are true about the use and monitoring of Buffer Cache Hit ratios and their value in tuning Database I/O performance?

The performance of workloads that primarily generate full table scans and fast full index scans are always affected by the cache hit ratio.

A 99% cache hit ratio can be observed for database instances which have very poor I/O performance.

The buffer cache advisory view v$db_cache_advice provides advice on cache hit ratios appropriate for the instance workload.

Both the RECYCLE and KEEP buffer caches should always have a very high cache hit ratio.

A 60% cache hit ratio can be observed for database instances which have very good I/O performance.

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

NEW QUESTION 36
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 37
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 38
Accessing the SALES tables causes excessive db file sequential read wait events.
Examine this AWR except:

Now, examine these attributes displayed by querying dba_tables:

Finally, examine these parameter settings:

Which two must both be used to reduce these excessive waits?

Partition the SALES table.

Increase PCTFREE for the SALES table.

Re-create the SALES table.

Compress the SALES table.

Coalesce all sales table indexes.

NEW QUESTION 39
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 40
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 41
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 42
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 43
Which application lifecycle phase could be managed reactively?

Design and development

Upgrade or migration

Testing

Production

Deployment

NEW QUESTION 44
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 45
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 46
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?

NEW QUESTION 47
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 48
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 49
You must produce a consolidated formatted trace file by combining all trace files generated by all clients for a single service.
Which combination of utilities does this?

Trace Analyzer and Tracsess

Trcsess and TKPROF

Autotrace and TKPROF

TKPROF and Trace Analyzer

NEW QUESTION 50
Which two actions can cause invalidation or loss of one or more results in the SQL Query Result Cache?

One or more results were aged out of the result cache.

result_cache_max_size is set dynamically to 0.

A request was made by the RCBG background of a non-RAC database.

A request was made by the RCBG background process in a physical standby database that is opened read only and whose primary has a result cache.

Decreasing the value set for RESULT_CACHE_REMOTE_EXPIRATION.

NEW QUESTION 51
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 52
Which two statements are true about disabling Automatic Shared Memory Management (ASMM)?

The SGA size remains unaffected after disabling ASMM.

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

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

It requires a database instance restart to take effect.

Both SGA_TARGET and SGA_MAX_SIZE must be set to zero.

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

NEW QUESTION 53
What is the right time to stop tuning an Oracle database?

When the allocated budget for performance tuning has been exhausted

When all the concurrency waits are eliminated from the Top 10

When the buffer cache and library cache hit ratio is above 95%

When the I/O is less than 10% of the DB time

NEW QUESTION 54
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?