[2021.4] Get the latest Oracle 1Z0-083 exam practice questions and free Pdf dumps from Lead4Pass

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  1. Oracle 1Z0-083 Dumps Pdf
  2. Oracle 1Z0-083 Dumps Youtube
  3. Oracle 1Z0-083 Exam Practice Test
  4. Oracle Discount Code 2021

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Latest Update Oracle 1Z0-083 Exam Practice Questions and Answers Online Test

QUESTION 1
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 reading WRITE mode.
You execute these commands successfully: Which two are true? (Choose two.)[2021.4] lead4pass 1z0-083 practice test q1

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
Correct Answer: BE
Section: (none)

 

QUESTION 2
While backing up to an SBT channel, you determine that the read phase of your compressed Recovery Manager
(RMAN) incremental level 0 backup is a bottleneck.
FORCE LOGGING is enabled for the database.
Which two could improve read performance? (Choose two.)
A. Increase the size of tape I/O buffers.
B. Disable FORCE LOGGING for the database.
C. Increase the size of the database buffer cache.
D. Enable asynchronous disk I/O.
E. Increase the level of RMAN multiplexing.
Correct Answer: CE
Section: (none)

 

QUESTION 3
Which two are true about the Oracle database methodology? (Choose two.)
A. The Oracle Database time model should be used to find the database and instance areas most in need of tuning.
B. Tuning activities should stop once the user is satisfied with the performance.
C. Tuning activities should stop once agreed service levels for performance have been met.
D. The database instance memory should always be tuned before tuning any file systems.
E. SQL statements should always be tuned before tuning any file systems.
F. The alert log should be used to find the database and instance areas most in need of tuning.
Correct Answer: CF
Section: (none)
Reference: https://flylib.com/books/en/4.322.1.9/1/

 

QUESTION 4
Which three are true about backup, restore, and recovery operations are done without using Recovery Manager (RMAN)?
(Choose three.)
A. Backing up a database in NOARCHIVELOG mode using O/S utilities requires that the database instance be started
and the database is in the MOUNT state.
B. Backing up a database in ARCHIVELOG mode using O/S utilities requires that the database instance be started and
the database is in MOUNT state.
C. An Oracle database can be restored from backup files copied using O/S utilities.
D. Oracle datafile backups, copied using an O/S utility, can be added to the RMAN catalog as IMAGE COPIES.
E. Backing up a database in NOARCHIVELOG mode using O/S utilities requires that the database instance be shut
down.
F. Oracle archive log backups, copied using an O/S utility, can be added to the RMAN catalog as a backup set.
G. Backing up a database in ARCHIVELOG mode using O/S utilities requires that the database instance be started and
the database is in the OPEN state.
Correct Answer: BDE
Section: (none)

 

QUESTION 5
You are managing this configuration:
1.
CDB1 is a container database.
2.
PDB1 and PDB2 are two pluggable databases in CDB1.
3.
USER1.EMP is a table in PDB1 and USER2.DEPT is a table in PDB2.
CDB1 user SYS executes these commands after connecting successfully to PDB2: Which two are true? (Choose two.)[2021.4] lead4pass 1z0-083 practice test q5

A. The inserts on USER1.EMP remain uncommitted when the session connected to PDB2.
B. The inserts on USER1.EMP was committed when the session inserted a row into USER2.DEPT.
C. The inserts on USER2.DEPT fails because of the active transaction in the parent container.
D. The insert on USER2.DEPT is a recursive autonomous transaction by the child session and is committed.
E. The inserts on USER1.EMP was rolled back when the session connected to PDB2.
F. The insert on USER2.DEPT is uncommitted.
G. The inserts on USER1.EMP was committed when the session connected to PDB2.
Correct Answer: DE
Section: (none)

 

QUESTION 6
Which three are true about upgrading Oracle Grid Infrastructure? (Choose three.)
A. A direct upgrade can be performed only from the immediately preceding Oracle Grid Infrastructure version.
B. The newer version is installed in a separate Oracle Grid Infrastructure home on the same server as the existing
version.
C. An existing Oracle base can be used.
D. The upgrade process will automatically install all mandatory patches for the current version of Oracle Grid
Infrastructure.
E. Existing Oracle Database instances must be shut down before starting the upgrade.
F. Only the grid user can perform the upgrade.
Correct Answer: DEF
Section: (none)
Reference: https://docs.oracle.com/database/121/CWLIN/procstop.htm#CEGEDCDB

 

QUESTION 7
Examine the command for creating pluggable database PDB2 in container database CDB2.[2021.4] lead4pass 1z0-083 practice test q7

Select three options, any one of which is required for it to execute successfully. (Choose three.)
A. Add the FILE_NAME_CONVERT clause to the statement and set the PDB_FILE_NAME_CONVERT parameter.
B. Add only the CREATE_FILE_DEST clause to the statement.
C. Set only the PDB_FILE_NAME_CONVERT parameter.
D. Set the PDB_FILE_NAME_CONVERT parameter and enable OMF.
E. Enable only OMF.
F. Add the FILE_NAME_CONVERT clause to the statement and enable Oracle Managed Files (OMF)
Correct Answer: BDE
Section: (none)

 

QUESTION 8
Which three are true about an application container?
A. It must have an application root PDB.
B. It can contain multiple applications.
C. An application PDB can belong to multiple application containers.
D. Two application containers can share an application seed PDB.
E. It can contain a single application.
F. It must have an application seed PDB.
Correct Answer: BDE
Section: (none)

 

QUESTION 9
Which three are true? (Choose three.)
A. Virtual Private Database (VPD) policies on objects in an application root are automatically synchronized with all
application PDBs contained in the application container.
B. Application-common TSDP policies are always container-specific.
C. Application-common Transparent Security Data Protection (TSDP) policies can be created only within an application
install/patch BEGIN-END block.
D. Application-common Oracle Label Security (OLS) policies cannot be created in an application root outside an
install/patch BEGIN-END block.
E. Fine-grained auditing (FGA) policies in an application root are automatically synchronized to all application PDBs
contained in the application container.
F. Application-common OLS policies can be created in an application root inside an install/patch BEGIN END block.
G. Unified auditing can be automatically synchronized to all application PDBs in an application container.
Correct Answer: ACG
Section: (none)


QUESTION 10
Examine this configuration:
1.
CDB1 is a container database running in archive log mode.
2.
Multiple uncommitted transactions are running in CDB1.
3.
Redo log groups 1 and 2 are inactive.
4.
Redo log group 3 is the current group.
All members of redo log group 3 are lost before it is archived. Examine these possible steps:
1.
SHUTDOWN ABORT
2.
STARTUP NOMOUNT
3.
STARTUP MOUNT
4.
ALTER DATABASE MOUNT
5.
RESTORE DATABASE
6.
RECOVER DATABASE NOREDO
7.
RECOVER DATABASE UNTIL AVAILABLE
8.
RESTORE ARCHIVELOG ALL
9.
ALTER DATABASE OPEN
10.
ALTER DATABASE OPEN RESETLOGS
Choose the minimum required steps in the correct order to recover the database.
A. 1, 3, 5, 6, 10
B. 1, 3, 5, 8, 6, 10
C. 1, 3, 5, 6, 9
D. 1, 3, 5, 6, 10
E. 1, 2, 5, 7, 4, 10
F. 1, 3, 5, 7, 10
Correct Answer: D
Section: (none)

 

QUESTION 11
Which three are true about Optimizer Statistics Advisor? (Choose three.)
A. It can be run only manually.
B. It is part of the DBMS_ADVISOR package.
C. It can recommend changes to improve the statistics gathering process.
D. It always analyzes all schemas in the database.
E. It runs automatically every night by default.
F. It is part of the DBMS_STATS package.
Correct Answer: CDF
Section: (none)
Reference: https://oracle-base.com/articles/12c/optimizer-statistics-advisor-12cr2

 

QUESTION 12
You have configured RMAN SBT channels to write backups to media. You then take an RMAN backup by using this
command:

[2021.4] lead4pass 1z0-083 practice test q12

Which three are true? (Choose three.)
A. The restore point is a label for the system change number (SCN) that will be saved two years after the archival
backup was taken.
B. The data file backups in the self-contained archive backup are not considered obsolete for two years regardless of
the retention policy.
C. All archive logs created after this backup are kept for two years.
D. The SPFILE is included in the self-contained archival backup.
E. The control file is included in the self-contained archival backup.
F. The restore point is a label for the system change number (SCN) before the archival backup was taken.
Correct Answer: CDE
Section: (none)

 

QUESTION 13
Which two are true about the character sets used in an Oracle database? (Choose two.)
A. Single-byte character sets provide better performance than multibyte character sets.
B. Unicode enables information from any language to be stored using a single character set.
C. Unicode is the only supported character set for Oracle databases created using Database Configuration Assistant
(DBCA).
D. Single-byte character sets always use 7-bit encoding schemes.
E. Multibyte character sets allow more efficient space utilization than single-byte character sets.
F. Single-byte character sets always use 8-bit encoding schemes.
Correct Answer: AB
Section: (none)
Reference: https://docs.oracle.com/database/121/NLSPG/ch2charset.htm#NLSPG166

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