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: Nov 26, 2025

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Question 1

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 2

choose two Which two statements are true about encrypted backups performed by using RMAN?

A : Transparent encryption of backups uses an encryption wallet.

B : Image copy backups can be created by using password encryption.

C : A password encryption of backups uses the password while creating and restoring backups.

D : Encrypted backups can only be written to disk.

E : A database uses the same encryption key for every encrypted backup.

Answer: A,C

Question 3

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

A : It is not possible if an archived log is missing.

B : It is performed automatically after the database is opened; however, blocks requiring recovery are not available until they are recovered.

C : Setting FAST_START_MTTR_TARGET to a lower value reduces instance recovery time by causing dirty buffers to be written to disk more frequently, thereby reducing the number of I/Os needed during instance recovery.

D : It is performed by the Recovery Writer (RVWR) background process.

E : Setting FAST_START_MTTR_TARGET to a higher value reduces instance recovery time by causing The log writer to write more frquently, thereby reducing the number of I/Os needed during instance recovery.

F : It is performed automatically while the database remains in MOUNT state. Then the database is opened.

Answer: A,C

Question 4

choose one You take regular backups of one of your production databases by using RMAN with a recovery catalog. You have added two new tablespaces to this database which must be included in future backups. Which process occurs which allows the new backups to contain the new datafiles?

A : The target database control file is synchronized from the recovery catalog with a partial resync at the next backup.

B : The recovery catalog is synchronized from the target database control file with a full resync at the next backup.

C : The target database control file is synchronized from the recovery catalog with a full resync at the next backup.

D : The recovery catalog is synchronized from the target database control file with a partial resync at the next backup.

Answer: B

Question 5

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 : Index balanced B*Tree height is considered when evaluating the cost of using an index.

C : The Statistics Advisor can help recommend the best way to gather statistics.

D : Statistics collected using DBMS_STATS always yield the best optimizer result.

E : The Statistics Advisor generates actions for all recommendations.

Answer: B,C

Page: 1 / 57

Total 285 Questions | Updated On: Nov 26, 2025

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