Oracle 1Z0-084 Actual Free Exam Questions & Community Discussion

Exam Code/Number: 1Z0-084
Exam Name/Title: Oracle Database 19c Performance and Tuning Management
Certification Provider: Oracle
Corresponding Certification: Oracle Database 19c

Exam Questions: 57
Updated On: Jul 06, 2026

Question #1

Which two statements are true about Data Pump import for objects that used the in Memory (IM) column store in their source database?

A. Its TRANSFORM clause can be used to add the INMEMORV clause to exported tables that lack them.

B. It always gives preference to the IM column store clause defined at the tablespace level over table-level definitions.

C. It can generates the INMEMORY clause that matches the table settings at export time.

D. It must always transports existing INMEMORY attributes.

E. It ignores the IM column store clause of the exporting objects.

F. Its INMEM0RY_CLAUSE of the Data Pump Export allows modifications to IM column store clause of a table with existing INMEMORY setting.

Discussion 0

Correct Answer: A,C Vote an answer

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Question #2

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?

A. Trcsess and TKPROF

B. TKPROF and Trace Analyzer

C. Autotrace and TKPROF

D. Trace Analyzer and Tracsess

Discussion 0

Correct Answer: A Vote an answer

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Question #3

You must write a statement that returns the ten most recent sales. Examine this statement:

Users complain that the query executes too slowly. Examine the statement's current execution plan:

What must you do to reduce the execution time and why?

A. Create an index on SALES.TIME_ID to force the return of rows in the order specified by the ORDER BY clause.

B. Create an index on SALES.CUST_ID to force an INDEX RANGE SCAN on this index followed by a NESTED LOOP join between CUSTOMERS and SALES.

C. Replace the FETCH FIRST clause with ROWNUM to enable the use of an index on SALES.

D. Enable Adaptive Plans so that Oracle can change the Join method as well as the Join order for this query.

E. Collect a new set of statistics on PRODUCT, CUSTOMERS, and SALES because the current stats are inaccurate.

Discussion 0

Correct Answer: A Vote an answer

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Question #4

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

A. When all the concurrency waits are eliminated from the Top 10

B. When the tuning goal has been met

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

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

E. When the allocated budget for performance tuning has been exhausted

Discussion 0

Correct Answer: B Vote an answer

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Question #5

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

A. DBMS_STATS.GATHER_FIXED_ OBJECTS_STATS

B. DBMS_STATS.GATHER_SYSTEM_STATS

C. DBMS_STATS.GATHER_DATABASE_STATS

D. DBMS_STATS.GATHER_DICTIONARY_STATS

Discussion 0

Correct Answer: C Vote an answer

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Question #6

Which statement is true about DB time in V$$YS_TIME_MODEL?

A. DB time can be many times greater than the elapsed time since the database instance started.

B. DB time is organized as a simple list of statistics and any time period is attributable to only one statistic.

C. DB tine excludes the time spent waiting for a CPU in the operating system run queue.

D. DB time includes the time spent executing the RMAN backup and restore command.

Discussion 0

Correct Answer: A Vote an answer

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