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

Which three are true about performing an Oracle Database install on Linux? (Choose three.)

A : The runfixup.sh script can install missing RPMs.

B : The Oracle Preinstallation RPM must be used to configure the Oracle database installation owner, the Oracle Inventory group, and an Oracle administrative privileges group

C : It allows you to select the languages supported by the Oracle database server.

D : It can be done before installing Grid Infrastructure for a Standalone Server

E : The Oracle Preinstallation RPM can be used to configure the Oracle database installation owner, the Oracle Inventory group, and an Oracle administrative privileges group

F : It can be done after installing Grid Infrastructure for a Standalone Server.

G : The Oracle database administrator must be granted access to the root operating system account to tun root privileged scripts.

Answer: A,D

Question 2

Which two are true about creating pluggable databases (PDBs) using snapshots in Oracle 19c and later releases? (Choose two.)

A : A PDB snapshot is always a full copy of the source PDB.

B : A PDB snapshot is always a sparse copy of the source PDB.

C : A snapshot copy PDB depends on a storage snapshot which can only be stored on specific file systems.

D : A PDB snapshot depends on a storage snapshot which can be stored on any file system.

E : A PDB snapshot depends on a storage snapshot which can only be stored on specific file systems.

F : A snapshot copy PDB depends on a storage snapshot which can be stored on any file system.

G : A snapshot copy PDB can be created from a stand-alone clone PDB.

Answer: A,C

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

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 5

Choose three. PDB1 and PDB2 are pluggable databases in CDB1. Examine these commands: $ export ORACLE_SID=CDB1 $ sqlplus / as sysdba SQL> STARTUP ....... Database opened. SQL> SHOW PDBS CON_ID CON_NAME --------------------------------------------------------------------OPEN MODE READ ONLY NO MOUNTED MOUNTED SQL> ALTER PLUGGABLE Pluggable database altered. SQL> ALTER PLUGGABLE DATABASE pdb1 SAVE STATE; Pluggable database altered. SQL> ALTER PLUGGABLE DATABASE pdb1 CLOSE; Pluggable database altered. SQL> ALTER PLUGGABLE A DATABASE pdb2 OPEN; Pluggable database altered. CDB1 is then restarted. Which three are true?

A : PDB2 will be opened READ WRITE.

B : PDB1 will be opened READ WRITE.

C : PDB1 will be MOUNTED.

D : PDB$SEED will be opened READ ONLY.

E : PDB$SEED will be MOUNTED

F : PDB2 will be MOUNTED.

Answer: A,B,D

Page: 1 / 57

Total 285 Questions | Updated On: Mar 26, 2026

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