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: Mar 26, 2026

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Question 1

You are working on an Oracle Database 19c database. You enabled the Flashback Database feature. Which two statements regarding flashback logs are true? (Choose two.)

A : Flashback logs are not archived.

B : Flashback logs are maintained in redo log files.

C : Flashback logs are maintained in the Flash Recovery Area.

D : Flashback logs are used to maintain Flashback Database related errors.

E : Flashback logs need to be cleared manually after you disable Flashback Database.

Answer: A,C

Question 2

Choose the best answer. SQL Performance Analyzer (SPA) has reported several regressed SQL statements for one of your databases. Which action could help in the performance management of these regressed SQL statements?

A : Create SQL plan directives for each of the regressed statements.

B : Use The SQL Tuning Advisor for each of the regressed statements.

C : Create an adaptive execution plan for each of the regressed statements

D : Use the SQL Access Advisor for each of the regressed statements.

Answer: B

Question 3

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 4

Which two are true about common objects? (Choose two.)

A : They can be created only in CDB$ROOT.

B : They can be only metadata-linked in an application container.

C : They can exist in user-defined schemas only in application containers.

D : They can exist in CDB$ROOT and an application root.

E : They can be extended data-linked in CDB$ROOT. F. They can be created only in an application root.

Answer: D

Question 5

Which two are true about Oracle instance recovery? (Choose three.)

A : Recovery begins from the beginning of the CURRENT redo log group.

B : Recovery begins from the last checkpoint position that was calculated by the Database Writer before instance failure.

C : Recovery begins from the start of any ACTIVE redo log group or the start of the CURRENT log group if no other group is ACTIVE.

D : Recovery reads redo until the end of the redo thread. SMON rolls back any dead transactions, and then the datanase is opened.

E : Recovery begins from the last checkpoint position that was recorded in the control file by the checkpoint process (CKPT).

F : Recovery reads redo until the end of the redo thread, and then opens the database. SMON then rolls back any dead transactions.

Answer: A

Page: 1 / 57

Total 285 Questions | Updated On: Mar 26, 2026

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