Free Oracle 1Z0-083 Exam Questions

Become Oracle Certified with updated 1Z0-083 exam questions and correct answers

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Total 285 Questions | Updated On: Dec 29, 2025

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Question 1

Choose the best answer. Examine this output of an export from the current release of an Oracle multitenant database: $ sqlplus system/oracle . SQL> col name for a10 SQL> select name, open_mode from v$pdbs; NAME OPEN_MODE ---------------------------------------PDB$SEED READ ONLY PDB1 READ WRITE PDB2 MOUNTED SQL> exit Next you execute: $ expdp system/oracle full=y What is the outcome?

A : It fails because Data Pump cannot be container.

B : It creates a full export of the root

C : It creates a full export of only the used while connected to the root container and PDB1. container and all PDBs. container and all open PDBs. root container.

Answer: A

Question 2

Which two are true about creating pluggable databases (PDBs) using snapshots in Oracle 19c and later releases? (Choose two.)

A : A PDB snapshot is always a full copy of the source PDB.

B : A PDB snapshot is always a sparse copy of the source PDB.

C : A snapshot copy PDB depends on a storage snapshot which can only be stored on specific file systems.

D : A PDB snapshot depends on a storage snapshot which can be stored on any file system.

E : A PDB snapshot depends on a storage snapshot which can only be stored on specific file systems.

F : A snapshot copy PDB depends on a storage snapshot which can be stored on any file system.

G : A snapshot copy PDB can be created from a stand-alone clone PDB.

Answer: A,C

Question 3

Choose three. Which three are true about block media recovery?

A :

To use it, Flashback Database must be enabled.

B :

A block being recovered is not accessible.

C :

It cannot repair logical corruption.

D :

It can be performed on noncorrupt blocks.

E :

The target database for which one or more blocks are to be recovered must be in the OPEN state.

F :

The data file containing the block being recovered remains online.

Answer: B,C,F

Question 4

Choose three. Which three are true about the Oracle Optimizer?

A : It considers the filters in WHERE clauses when generating execution plans for SQL statements.

B : It obeys all hints.

C : It considers object statistics when generating execution plans for SQL statements.

D : It updates stale object statistics in the Data Dictionary.

E : It can only use SQL Plan Directives tied to the SQL statement for which a plan is being generated.

F : It can re-optimize execution plans after previous executions detect suboptimal plans.

Answer: A,D

Question 5

Which two are true about the execution of operating system scripts starting from Oracle Database 19c? (Choose two.)

A : orainstRoot.sh can be executed automatically by the Database installer by using sudo or root credentials.

B : root.sh can be executed automatically by the Database Installer only if it is provided with root credentials.

C : The sudo password can be specified in a response file.

D : root.sh can be executed automatically by the Database installer only by using sudo credentials

E : The sudo password must be specified in a response file.

F : The root password cannot be specified in a response file.

Answer: A

Page: 1 / 57

Total 285 Questions | Updated On: Dec 29, 2025

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