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: Feb 21, 2026

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Question 1

Examine this configuration: While CDB1 is open, '/u02/app/oracle/fast_recover_area/cdb1/CDB1/ controlfile02.ctl'is accidentally deleted. To recover from this critical failure, you execute these commands:
What will be the outcome?

A : It will create '$ORACLE_HOME/dbs/cdb1/CDB1/controlfile02.ctl'

B : It will create '/u01/app/oralce/oradata/CDB1/controlfile/controlfile02.ctl'.

C : It will re-create '/u02/app/oracle/fast_recover_area/cdb1/CDB1/controlfile02.ctl'

D : It will create '/u01/app/oracle/product/12.2.0.1/db_1/dbs/snapcf_cdb1control02.ctl'.

E : It will fail because there is no autobackup of the controlfiles.

Answer: C

Question 2

Choose the best answer. Which should be tuned first when doing a performance tuning exercise for an Oracle Database environment?

A :

log writer performance

B :

database writer performance

C :

general operating system health

D :

SQL statements

E :

database instance memory management and sizes

Answer: C

Question 3

Choose three. Which three are true about a container database (CDB)?

A : It can be created from a non-CDB.

B : It can contain only one PDB$SEED, which is created when the CDB is created.

C : It can have local users with the same name in different PDBs.

D : It can contain only one Application Container seed, which is created when the Application Container is created.

E : It can be created by cloning an existing CDB.

F : It can have any number of pluggable databases (PDBs) limited only by space availability.

G : It contains predefined common roles in both the root and the seed.

Answer: A,B

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

Which two are true about flashback features in Oracle Database 19c and later releases? (Choose two.)

A : Flashback logs are automatically purged when DB_FLASHBACK_RETENTION_TARGET is set lower than the time they have already been retained.

B : Flashback logs are monitored and proactively deleted when beyond the retention period defined in DB_FLASHBACK_RETENTION_TARGET only after there is space pressure.

C : Flashback logs are monitored and proactively deleted when beyond the retention period defined in DB_FLASHBACK_RETENTION_TARGET before there is space pressure.

D : Flashback logs are monitored for being older than the retention period defined in DB_FLASHBACK_RETENTION_TARGET and can be deleted by an administrator written event trigger.

E : Flashback logs are automatically purged whenever the value of DB_FLASHBACK_RETENTION_TARGET is changed.

Answer: A,C

Page: 1 / 57

Total 285 Questions | Updated On: Feb 21, 2026

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