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 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

Question 2

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

Question 3

Choose three. Which three resources are always shared among CDB$ROOT and pluggable databases (PDBs)?

A : the data dictionary in CDB$ROOT

B : the log writer process (LGWR)

C : SYSAUX tablespaces

D : temporary tablespaces

E : the Process Monitor Process (PMON)

F : undo tablespaces

Answer: A,B

Question 4

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 5

Choose two. Your SALES_ROOT application container has two application PDBs. The SALES_APP application has a common table, FIN.REVENUE, in the two PDBs. Examine this query and its output: SELECT containers_default, container_map, table_name FROM dba_tables WHERE owner='FIN' ; CONTAINERS_DEFAULT CONTAINER_MAP CONTAINER_MAP_OBJECT TABLE_NAME -------------------------------------------------------------------------------------------------------------------------------NO YES NO REVENUE NO NO YES MAPTABLE Which two are true?

A : The REVENUE table must be a list-partitioned table.

B : The CONTAINERS clause cannot be used in queries on the REVENUE table.

C : The REVENUE table partitions are not pruned across the PDBs automatically

D : The REVENUE table must be a composite-partitioned table.

E : The MAPTABLE table defines a logical partition key on a commonly used column for the REVENUE table.

Answer: C,D

Page: 1 / 57

Total 285 Questions | Updated On: May 12, 2026

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