Quickly and Easily Pass Oracle Exam with 1z1-084 real Dumps Updated on Feb-2025 [Q33-Q48]

QUESTION 33
Which procedure gathers statistics that are always used in the generation of any execution plan?

QUESTION 34
You must configure and enable Database Smart Flash Cache for a database.
You configure these flash devices:

Examine these parameter settings:

What must be configured so that the database uses these devices for the Database Smart Flash Cache?

QUESTION 35
You manage a 19c database with default optimizer settings.
This statement is used extensively as subquery in the application queries:
SELECT city_id FROM sh2.sales WHERE city_id=:Bl
You notice the performance of these queries is often poor and, therefore, execute:
SELECT city_id,COUNT(*) FROM sh2.sales GROUP BY city_id;
Examine the results:

There is no index on the CITY_ID column.
Which two options improve the performance?

QUESTION 36
Examine these commands, which execute successfully:

Which statement is true?

QUESTION 37
Examine this statement and output:

Which three statements are true?

QUESTION 38
Which three statements are true about server-generated alerts?

QUESTION 39
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?

QUESTION 40
Examine this statement and output:

Which two situations can trigger this error?

QUESTION 41
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?

QUESTION 42
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?

QUESTION 43
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

QUESTION 44
Which application lifecycle phase could be managed reactively?

QUESTION 45
Examine these commands, which execute successfully:

Which statement is true?

QUESTION 46
18. The application provider has given full indications regarding the procedure to collect statistics.
To reduce the space used in the SYSAUX tablespace, you want to prevent the optimizer statistics Advisor from running.
Which method will allow you to do this?

QUESTION 47
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?

QUESTION 48
What is the right time to stop tuning an Oracle database?