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: May 12, 2026

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Question 1

Which two are true about changing the LOCAL_UNDO_ENABLED property to false in a CDB? (Choose two.)

A : After the change, only a common user with the required privilege can create an undo tablespace in CDB&ROOT.

B : Any new PDB and existing PDBs are automatically configured to use the default undo tablespace in CDB$ROOT

C : After the change, only one undo tablespace can exist in CDB$ROOT.

D : After the change, any user with the required privilege can create an undo tablespace in the PDBs.

E : Undo tablespaces existing in PDBs must be dropped before the change.

F : After the change, each existing PDB has to be reopened for the new undo mode to take effect.

Answer: A,B

Question 2

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 3

Which three statements are true about Flashback Data Archive?

A : To use Flashback Data Archive, users must have unlimited quota on the Flashback Data Archive tablespace.

B : To enable Flashback Data Archive for a table, it is mandatory to have a default Flashback Data Archive for a database

C : While enabling Flashback Data Archive for a table, if no name is provided for Flashback Data Archive, it is enabled using the default Flashback Data Archive.

D : A table enabled for Flashback Data Archive cannot be dropped unless Flashback Data Archive is disabled or disassociated first.

E : Flashback Data Archive prevents flashback queries from getting a snapshot-too-old error.

Answer: A,C,D

Question 4

Which three are true about Automatic Workload Repository (AWR) snapshots?

A :

They are generated if STATISTICS_LEVEL is set to TYPICAL.

B :

They are always created manually.

C :

They are always created automatically.

D :

They are generated if STATISTICS_LEVEL is set to BASIC.

E :

They are generated if STATISTICS_LEVEL is set to ALL.

F :

They can be retained forever.

Answer: A,E,F

Question 5

Choose three. In which three situations can you use threshold server-generated alerts to help diagnose and fix problems?

A : when free space in a dictionary managed tablespace falls below a specified percentage

B : when free space in a locally managed tablespace falls below a specified percentage

C : when the total number of locked user account exceeds a specific value

D : when the number of logons per second exceeds a specific value

E : when a resumable statement is suspended

F : when the total number of logons exceeds a specific value

Answer: B,C,D

Page: 1 / 57

Total 285 Questions | Updated On: May 12, 2026

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