Online Access Free Oracle.1Z1-083.v2022-04-30.q110 Practice Test (Page 2)

1Z1-083 Exam Question 1

Which two are true about poorly performing SQL statements and their tuning in Oracle database instances?
(Choose two.)

A.SQL statements doing joins always do more physical I/O than single table queries.

B.Poorly performing SQL statements can be tuned automatically by the Oracle server.

C.The solution that best optimizes one SQL statement can degrade the performance of others.

D.SQL statements performing many physical I/Os can always have their performance improved by creating indexes.

E.SQL statements doing only logical reads never require tuning because they do no physical I/O.

1Z1-083 Exam Question 2

Which three are true about transporting databases across platforms using Recovery Manager (RMAN) image copies? (Choose three.)

A.By default, the transported database will use Oracle Managed Files (OMF)

B.Data files can be converted on the destination system.

C.Data files can be converted on the source system.

D.A new DBID is automatically created for the transported database.

E.Databases can be transported between systems with different endian formats.

F.The password file is automatically converted by RMAN.

1Z1-083 Exam Question 3

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.FLASHBACKdrop requires that the RECYCLEBIN parameter be set to ON.

C.FLASHBACKversion query requires that the RECYCLEBINparameter be set to ON.

D.FLASHBACK DATA ARCHIVErequires undo to store all versions of all rows of a table being tracked.

E.FLASHBACKdrop requires undo to retrieve all versions of a row that existed between two points in time.

F.FLASHBACKversion query requires undo to retrieve all versions of a row that existed between two points in time.

1Z1-083 Exam Question 4

Examine this configuration:
1. CDB1 is an Oracle Database 12c Release 2 container database (CDB).
2. PDB1 and PDB2 are two pluggable databases (PDBs) in CDB1.
After successfully performing all the preupgrade tasks, you execute these commands from the Oracle Database 18c environment:
What is the outcome?

A.Only CDB$ROOT, PDB$SEED, and PDB2 are upgraded.

B.CDB$ROOT, PDB$SEED, PDB1, and PDB2 are upgraded.

C.Only CDB$ROOT and PDB$SEED are upgraded.

D.It fails because PDB2 is not in UPGRADE state.

E.Only CDB$ROOT, PDB$SEED, and PDB1 are upgraded.

F.It fails because PDB$SEED is in MIGRATE state.

1Z1-083 Exam Question 5

Examine this configuration:
CDB1 is a container database.
PDB1 and PDB2 are pluggable databases in CDB1.
PDB1 and PDB2 are OPEN in READ WRITE mode.
You execute these commands successfully:

Which two are true? (Choose two.)

A.Uncommitted transactions in PDB1 have been rolled back.

B.CDB1 is shut down.

C.Uncommitted transactions in CDB1 and PDB1 have been rolled back.

D.PDB1 is closed.

E.CDB1 is in MOUNT state

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1Z1-083 Exam Question 1

1Z1-083 Exam Question 2

1Z1-083 Exam Question 3

1Z1-083 Exam Question 4

1Z1-083 Exam Question 5

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