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Free 1Z0-083 Practice Test | Pass Oracle Exam Today

Question 1

Choose three. Which three are true about block media recovery?

Options :

A : To use it, Flashback Database must be enabled.

B : A block being recovered is not accessible.

C : It cannot repair logical corruption.

D : It can be performed on noncorrupt blocks.

E : The target database for which one or more blocks are to be recovered must be in the OPEN state.

F : The data file containing the block being recovered remains online.

Answer: B,C,F

Question 2

Which two are true about creating RMAN backups for an Oracle container database? (Choose two.)

Options :

A : Tablespaces from different PDBs with identical names must be backed up by connecting RMAN separately to each PDB to back up the tablespaces

B : The BACKUP DATABASE command will create a pluggable database (PDB) backup when RMAN is connected to a PDB.

C : SPFILE backups can be created while connected to an application root PDB.

D : The BACKUP DATABASE PLUS ARCHIVE LOG command will back up archive logs when RMAN is connected to a PDB.

E : The BACKUP PLUGGABLE DATABASE command can be used to back up CDB$ROOT.

Answer: A,B

Question 3

Choose the best answer. Examine this configuration: 1. CDB1 is a container database. 2. DEFAULT_SHARING is METADAT 3. APP_ROOT is an application root contained in CDB1. 4. APP_PDB1 is an application PDB contained in APP_ROOT. 5. COMPANYAPP is an application contained in APP_ROOT. 6. EMP is a common table created in APP_ROOT and all its application PDBs, created when version 1.0 of COMPANYAPP was installed. You execute these commands: $ sqlplus sys/ orac1e@localhost:1521/cdb1 as sysdba SQL> ALTER SYSTEM SET DEFAULT_SHARING=DATA; System altered. SQL> ALTER SESSION SET CONTAINER=app_root; Session altered. SQL> ALTER PLUGGABLE DATABASE APPLICATION companyapp BEGIN UPGRADE '1.0' TO '2.0'; pluggable database altered. SQL> ALTER TABLE emp ADD (sal NUMBER NOT NULL) ; Table altered. SQL> ALTER PLUGGABLE DATABASE APPLICATION companyapp END UPGRADE TO '2.0'; Pluggable database altered. SQL> ALTER SESSION SET CONTAINER=app_pdb1; Session altered. SQL> DESC emp; Name Null? Type --------------------------------------------------------------ENO NUMBER ENAME VARCHAR2 (20) SQL> SELECT * FROM emp; ENO ENAME ---------------------------------100 Alan 200 Ben SQL> ALTER PLUGGABLE DATABASE APPLICATION companyapp SYNC; What will be the outcome and why?

Options :

A : SAL will be added to APP_PDB1.EMP, with 0 in columns of existing rows.

B : SAL will be added to APP_PDB1.EMP, with NULLs in columns of existing rows

C : It will return an error because the SYNC operation is not allowed when constraints are added to common objects.

D : It will return an error because EMP is not empty in APP_ROOT.

E : It will return an error because EMP.SAL is empty in APP_ROOT.

Answer: D

Question 4

Examine this configuration:
1. CDB1 is a container database.
2. PDB1 and PDB2 are pluggable databases in CDB1.
3. PDB1 and PDB2 are OPEN in READ WRITE mode.
You execute these commands successfully: Which two are true? (Choose two.)

Options :

A : Uncommitted transactions in PDB1 have been rolled back.

B : PDB1 is closed.

C : Uncommitted transactions in CDB1 and PDB1 have been rolled back.

D : CDB1 is shut down.

E : CDB1 is in MOUNT state

Answer: A,B

Question 5

Which two are true about the execution of operating system scripts starting from Oracle Database 19c? (Choose two.)

Options :

A : orainstRoot.sh can be executed automatically by the Database installer by using sudo or root credentials.

B : root.sh can be executed automatically by the Database Installer only if it is provided with root credentials.

C : The sudo password can be specified in a response file.

D : root.sh can be executed automatically by the Database installer only by using sudo credentials

E : The sudo password must be specified in a response file.

F : The root password cannot be specified in a response file.

Answer: A

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