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Oracle Database Administration I Sample Questions (Q147-Q152):

NEW QUESTION # 147
A database is configured to use automatic undo management with temporary undo enabled.
An UPDATE is executed on a temporary table.
Where is the UNDO stored?

A. in the undo tablespace
B. in the SYSAUX tablespace
C. in the SGA
D. in the temporary tablespace
E. in the PGA

Answer: A

NEW QUESTION # 148
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. It fails because the SCOPE clause is missing
B. Change is applied to the current instance, but does not persist after instance restart
C. The value is changed for the current instance and in the PFILE
D. The value is changed only in the PFILE and takes effect at the next instance startup

Answer: B

Explanation:
https://docs.oracle.com/database/121/SQLRF/statements_2017.htm#SQLRF00902

NEW QUESTION # 149
What is true about non-equijoin statement performance? (Choose two.)

A. Table aliases can improve performance
B. The Oracle join syntax performs better than the SQL:1999 compliant ANSI join syntax
C. The join syntax used makes no difference to performance
D. The BETWEEN condition always performs better than using the >= and <= conditions
E. The BETWEEN condition always performs less well than using the >= and <= conditions

Answer: A,B

Explanation:
https://stackoverflow.com/questions/58476906/1z0-071-oracle-exam-question-which-answers-is-correc

NEW QUESTION # 150
View the Exhibits and examine the structure of the COSTS and PROMOTIONS tables.
You want to display PROD_IDS whose promotion cost is less than the highest cost PROD_ID in a promotion time interval.
Examine this SQL statement:

Exhibit 1.

Exhibit 2.

What will be the result?

A. It gives an error because the GROUP BY clause is not valid
B. It gives an error because the ALL keyword is not valid
C. It executes successfully and gives the required result
D. It executes successfully but does not give the required result

Answer: C

NEW QUESTION # 151
In the promotions table, the PROMO_BEGIN_DATE column is of data type date and the default date format Is DD-MON-RR.
h two statements are true about expressions using PROMO_BEGIN_DATE contained In a query?

A. PROMO_ BEGIN_DATE - 5 will return a date.
B. PROMO_ BEGIN_DATE - sysdate will return an error.
C. PROMO_ BEGIN_DATE - sysdate will return a number.
D. to_numberipromo_begin_date) - s will return a number.
E. TO_date(PROMO_ BEGIN_DATE * 5| will return a date.

Answer: A,B

NEW QUESTION # 152
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