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Oracle 1Z0-083 Practice testing questions from Youtube

latest updated Oracle 1Z0-083 exam questions and answers

QUESTION 1
Which three methods can be used for heap table data migration after upgrading a database? (Choose three.)
A. using Database Replay
B. using SQL Developer
C. using Oracle Data Pump
D. using operating system file copy utilities
E. using Database Upgrade Assistant
F. using the CREATE TABLE AS SELECT SQL statement
Correct Answer: DEF

 

QUESTION 2
Which three are true about requirements for various FLASHBACK operations? (Choose three.)
A. FLASHBACK transaction query requires to undo to retrieve all versions of a row that existed between two points in
time.
B. FLASHBACK drop requires that the RECYCLE BIN parameter be set to ON.
C. FLASHBACK version query requires that the RECYCLE BIN parameter be set to ON.
D. FLASHBACK DATA ARCHIVE requires to undo to store all versions of all rows of a table being tracked.
E. FLASHBACK drop requires to undo to retrieve all versions of a row that existed between two points in time.
F. FLASHBACK version query requires to undo to retrieve all versions of a row that existed between two points in time.
Correct Answer: ABC
Reference:
https://books.google.com.pk/books?id=0iwrL9P25Z0Candpg=PA35andlpg=PA35anddq=FLASHBACK+transaction+quer
y+requires+undo+to+retrieve+all+versions+of+a+row+that+existed+between+two+points+in
+timeandsource=blandots=MJnYl5CZ1uandsig=ACfU3U0dWP-NPd-U8uu3zbaoi3YZzT0FTQandhl=enandsa=Xandved
=2ahUKEwigi5_Jl9joAhXzUBUIHUh4DksQ6AEwAnoECAsQJg#v=onepageandq=FLASHBACK%20transaction%20quer
y%20requires%
20undo%20to%20retrieve%20all%20versions%20of%20a%20row%20that%20existed%20between%20two%20points%
20in%20timeandf=false
https://docs.oracle.com/cd/E18283_01/server.112/e17120/tables011.htm

 

QUESTION 3
Which two are true about SQL Performance Analyzer (SPA)? (Choose two.)
A. It is integrated with the SQL Access Advisor.
B. It predicts the impact of system changes on SQL workload response time.
C. It provides before and after execution statistics for each SQL statement in the analysis task
D. It offers a fine-grained analysis of all the SQL statements in the analysis task as a group.
E. SQL statements that were originally run concurrently are run concurrently by SPA.
Correct Answer: BD
Reference: https://www.oracle.com/technetwork/database/manageability/spa-ow09-131455.pdf (4)

 

QUESTION 4
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:[2021.1] lead4pass 1z0-083 exam questions q4

Which two are true? (Choose two.)
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

 

QUESTION 5
Which two are true about Oracle Optimizer Statistics, their use, and their collection? (Choose two.)
A. The number of table rows is considered when evaluating the cost of accessing a table using an index.
B. Index balanced B*Tree height is considered when evaluating the cost of using an index.
C. The Statistics Advisor can help recommend the best way to gather statistics.
D. Statistics collected using DBMS_STATS always yield the best optimizer result.
E. The Statistics Advisor generates actions for all recommendations.
Correct Answer: CD
Reference: https://docs.oracle.com/en/database/oracle/oracle-database/19/tgsql/optimizer-statistics-advisor.html#GUIDD81A7708-FDA0-45BB-A6E2-103858B047AE

 

QUESTION 6
You have configured RMAN SBT channels to write backups to media. You then take an RMAN backup by using this
command:[2021.1] lead4pass 1z0-083 exam questions q6

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-contaied 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

 

QUESTION 7
You must transport the UNIVERSITY tablespace from one database to another.
The UNIVERSITY tablespace is currently open read/write.
The source and destination platforms have different endian formats.
Examine this list of actions:
1.
Make the UNIVERSITY tablespace read-only on the source system.
2.
Export the UNIVERSITY tablespace metadata using EXPDP.
3.
Convert the UNIVERSITY tablespace data files to the destination platform format using RMAN on the source system.
4.
Copy the UNIVERSITY tablespace data files to the destination system.
5.
Copy the Data Pump dump set to the destination system.
6.
Convert the UNIVERSITY tablespace data files to the destination platform format using RMAN on the destination
system.
7.
Import the UNIVERSITY tablespace metadata using IMPDP.
8.
Make the UNIVERSITY tablespace read/write on the destination system.
Which is the minimum number of actions required, in the correct order, to transport the UNIVERSITY tablespace?
A. 1, 2, 4, 5, 7, 8
B. 1, 2, 4, 6, 7, 8
C. 1, 2, 3, 4, 5, 7, 8
D. 1, 2, 3, 4, 5, 6, 7, 8
E. 2, 4, 5, 6, 7
Correct Answer: B

 

QUESTION 8
Which two are true about data movement between a non-CDB and a PDB using Data Pump? (Choose two.)
A. Tablespaces are automatically created as needed while importing full exports in either a non-CDB or a PDB.
B. Oracle attempts to convert conventional database users to local users when moving schemas from a non-CDB to a
PDB.
C. A new PDB is automatically created when importing a non-CDB into a CDB.
D. Oracle attempts to convert common users to conventional users when moving schemas from a PDB to a non-CDB.
E. Moving data from a PDB to a non-CDB is only possible by using transportable tablespace export and import.
F. Moving data from a non-CDB to a PDB is only possible by using conventional export and import.
Correct Answer: DE

 

QUESTION 9
Examine this configuration:
1.
The ORCL database data files are in Automatic Storage Management (Oracle ASM) disk group +DATA.
2.
ORCL uses disk group +FRA for the Fast Recovery Area.
3.
LISTENER is the listener for ORCL.
4.
The database, listener, ASM instance, and ASM disk groups are managed by Oracle Restart.
5.
All components are currently shut down.
You execute this command:[2021.1] lead4pass 1z0-083 exam questions q9

What is the outcome?
A. The ORCL database, the Oracle ASM instances, the +DATA, and +FRA disk groups, and the LISTENER are started.
B. Only the ORCL database instance is started.
C. Only the ORCL database and the ASM instances are started.
D. Only the ORCL database instance, the Oracle ASM instance, and the +DATA and +FRA disk groups are started.
E. Only the ORCL database instance and the +DATA and +FRA disk groups are started.
Correct Answer: D

 

QUESTION 10
Which three are true about RMAN persistent configuration settings, administration, and their effects? (Choose three.)
A. A target database\\’s persistent RMAN configuration settings are always stored in the target\\’s control file
B. Backup older than the recovery window retention policy are always deleted automatically if the backup location has
insufficient space.
C. Backups written to the fast recovery area (FRA) that are obsolete based on the redundancy retention policy can be
deleted automatically to free space.
D. The RMAN SHOW ALL command displays only settings with nondefault values.
E. A target database\\’s persistent RMAN configuration settings are always synchronized automatically with the RMAN
catalog.
F. The V$RMAN_CONFIGURATION view displays only settings with values that have been modified.
G. A DBA must specify either a redundancy retention policy or a recovery window retention policy.
Correct Answer: ABF
Reference: https://books.google.com.pk/books?id=pUEkAAAAQBAJandpg=PA114andlpg=PA114anddq=V$RMAN_CO
NFIGURATION+view+displays+only+settings+with+values+that+have+been +modifiedandsource=blandots=fhC9A7UL
eXandsig=ACfU3U2-cGhTjmAOpCZhvlL5R4j6ixLRAwandhl=enandsa=Xandved=2ahUKEwjJzfWmtnoAhXT8eAKHQ9uBG8Q6AEwAHoECAwQJg#v=onepageandq=V%24RMAN_CONFIGURATION%20view%
20displays%20only%20settings%20with%20values%20that%20have%20been%20modifiedandf=false

 

QUESTION 11
Which three are located by using environment variables? (Choose three.)
A. the Optimal Flexible Architecture (OFA) compliant path to store Oracle software and configuration files.
B. the location of Oracle Net Services configuration files
C. the list of disk group names to be mounted by an Oracle Automatic Storage Management (ASM) instance at
startup
D. default directories for temporary files used by temporary tablespaces
E. the temporary disk space used by Oracle Installer during installation
F. the maximum number of database files that can be opened by a database instance
Correct Answer: BDF

 

QUESTION 12
Which two are true about the Automatic Database Diagnostic Monitor (ADDM)? (Choose two.)
A. It analyzes a period of time corresponding to the 12 hours of activity.
B. It runs automatically after each AWR snapshot.
C. A DBA can run it manually.
D. Results are written to the alert log.
E. It analyzes a period of time corresponding to the last day of activity.
Correct Answer: BD

 

QUESTION 13
Examine this configuration:
1.
CDB1 is a container database.
2.
PDB1 and PDB2 are pluggable databases in CDB1.
You execute these commands successfully:[2021.1] lead4pass 1z0-083 exam questions q13

Which two are true? (Choose two.)
A. PDB1 and PDB2 are in MOUNT state.
B. Redo logs are opened.
C. PDB1 and PDB2 are in the reading the ONLY state.
D. CDB$ROOT is in MOUNT state.
E. PDB$SEED is in reading the ONLY state.
Correct Answer: BE

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