Free Access Oracle.1Z0-082.v2022-02-11.q110 Practice Test (Page 7)

Question 26

Which two statements are true about the PMON background process? (Choose two.)

A.It registers database services with all local and remote listeners known to the database instance

B.It frees resources held by abnormally terminated processes

C.It records checkpoint information in the control file

D.It frees unused temporary segments

E.It kills sessions that exceed idle time

Question 27

What is true about non-equijoin statement performance? (Choose two.)

A.Table aliases can improve performance

B.The BETWEEN condition always performs better than using the >= and <= conditions

C.The join syntax used makes no difference to performance

D.The BETWEEN condition always performs less well than using the >= and <= conditions

E.The Oracle join syntax performs better than the SQL:1999 compliant ANSI join syntax

Question 28

The CUSTOMERS table has a CUST_CREDIT_LIMIT column of data type NUMBER.
Which two queries execute successfully? (Choose two.)

A.SELECT NVL2(cust_credit_limit * .15, `Not Available') FROM customers;

B.SELECT NVL(TO_CHAR(cust_credit_limit * .15), `Not Available') FROM customers;

C.SELECT NVL(cust_credit_limit * .15, `Not Available') FROM customers;

D.SELECT TO_CHAR(NVL(cust_credit_limit * .15, `Not Available')) FROM customers;

E.SELECT NVL2(cust_credit_limit, TO_CHAR(cust_credit_limit * .15), `Not Available') FROM customers;

Question 29

Which three Oracle database space management features will work with both Dictionary and Locally managed tablespaces? (Choose three.)

A.Oracle Managed Files (OMF)

B.Online table segment shrink

C.Online index segment shrink

D.Automatic data file extension (AUTOEXTEND)

E.Capacity planning growth reports based on historical data in the Automatic Workload Repository (AWR)

Question 30

Your database instance is started with a PFILE.
Examine these parameters:

You want to increase the size of the buffer cache.
Free memory is available to increase the size of the buffer cache.
You execute the command:
SQL> ALTER SYSTEM SET DB_CACHE_SIZE=1024M;
What is the outcome?

A.The value is changed only in the PFILE and takes effect at the next instance startup

B.The value is changed for the current instance and in the PFILE

C.It fails because the SCOPE clause is missing

D.Change is applied to the current instance, but does not persist after instance restart

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Question 26

Question 27

Question 28

Question 29

Question 30

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