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Oracle Database Administration II Sample Questions (Q149-Q154):

NEW QUESTION # 149
Which two are facets of performance planning that should always be considered or implemented for an Oracle Database environment?

A. the configuration of storage arrays
B. defining primary keys for all tables to speed up all queries
C. using check constraints to speed up updates
D. defining foreign keys for all tables to speed up joins
E. the physical data model

Answer: A,D

NEW QUESTION # 150
Which three are true about requirements for various FLASHBACKoperations? (Choose three.)

A. FLASHBACKtransaction query requires undo to retrieve all versions of a row that existed between two points in time.
B. FLASHBACKversion query requires that the RECYCLEBINparameter be set to ON.
C. FLASHBACK DATA ARCHIVErequires undo to store all versions of all rows of a table being tracked.
D. FLASHBACKdrop requires undo to retrieve all versions of a row that existed between two points in time.
E. FLASHBACKdrop requires that the RECYCLEBIN parameter be set to ON.
F. FLASHBACKversion query requires undo to retrieve all versions of a row that existed between two points in time.

Answer: A,B,E

Explanation:
Explanation/Reference:
https://books.google.com.pk/books?id=0iwrL9P25Z0C&pg=PA35&lpg=PA35&dq=FLASHBACK+transaction
+query+requires+undo+to+retrieve+all+versions+of+a+row+that+existed+between+two+points+in
+time&source=bl&ots=MJnYl5CZ1u&sig=ACfU3U0dWP-NPd-
U8uu3zbaoi3YZzT0FTQ&hl=en&sa=X&ved=2ahUKEwigi5_Jl9joAhXzUBUIHUh4DksQ6AEwAnoECAsQJg#v=o nepage&q=FLASHBACK%20transaction%20query%20requires%20undo%20to%20retrieve%20all%20versions
%20of%20a%20row%20that%20existed%20between%20two%20points%20in%20time&f=false
https://docs.oracle.com/cd/E18283_01/server.112/e17120/tables011.htm

NEW QUESTION # 151
Choose three. Which three are true about interpreting Recovery Manager (RMAN) error stacks returned to standard output?

A. Media Management errors appear as a line with "sbtio" and a number.
B. Media Management errors appear as a line with "sbtio".
C. If an RMAN command fails, the output will only identify the command that failed.
D. Some messages in the error stack are not errors.
E. If an RMAN command fails, the output will identify the channel ID where the failure occurred. D)Media Management errors appear as a line with "Additional information" and a number.

Answer: A,C,D

NEW QUESTION # 152
Which two are true about Oracle Optimizer Statistics, their use, and their collection? (Choose two.)

A. The number of table rows is considered when evaluating the cost of accessing a table using an index.
B. The Statistics Advisor generates actions for all recommendations.
C. Index balanced B*Tree height is considered when evaluating the cost of using an index.
D. The Statistics Advisor can help recommend the best way to gather statistics.
E. Statistics collected using DBMS_STATS always yield the best optimizer result.

Answer: D,E

Explanation:
Explanation/Reference: https://docs.oracle.com/en/database/oracle/oracle-database/19/tgsql/optimizer-statistics- advisor.html#GUID-D81A7708-FDA0-45BB-A6E2-103858B047AE

NEW QUESTION # 153
Choose two. Which two are true about RMAN persistent configuration settings, administration, and their effects?

A. Backups older than the recovery window retention policy are always deleted automatically if the backup location has insufficient space.
B. A DBA must specify either a redundancy retention policy or a recovery window retention policy. B)A target database's persistent RMAN configuration settings are always synchronized automatically with the RMAN catalog.
C. Backups written to the fast recovery area (FRA) that are obsolete based on the redundancy retention policy can be deleted automatically to free space.
D. A target database's persistent RMAN configuration settings are always stored in the target's control file.

Answer: B

NEW QUESTION # 154
......

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1Z0-083 AUTHENTIC EXAM QUESTIONS | 1Z0-083 VALID EXAM QUESTIONS

1Z0-083 Authentic Exam Questions | 1Z0-083 Valid Exam Questions