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latest updated Oracle 1Z0-082 exam questions and answers

QUESTION 1
Which two statements are true regarding the UNION and UNION ALL operators? (Choose two.)
A. Duplicates are eliminated automatically by the UNION ALL operator
B. The number of columns selected in each SELECT statement must be identical
C. The names of columns selected in each SELECT statement must be identical
D. The output is sorted by the UNION ALL operator
E. NULLS are not ignored during duplicate checking
Correct Answer: BE

QUESTION 2
Which three statements are true about undoing segments and the use of undo by transactions in an Oracle database
instance? (Choose three.)
A. An undo segment may be used by multiple transactions simultaneously
B. Undo segments can wrap around to the first extent when a transaction fills the last extend of the undo segment
C. Undo segments have a minimum of three extents
D. Undo segments can extend when a transaction fills the last extent of the undo segment
E. A single transaction may use multiple undo segments simultaneously
F. Undo segments must be stored in a big file tablespace
G. Undo segments must be stored in a SMALL FILE tablespace
Correct Answer: ADG

QUESTION 3
Examine this description of the TRANSACTIONS table:

Which two SQL statements execute successfully? (Choose two.)
A. SELECT customer_id AS “CUSTOMER-ID”, transaction_date AS DATE, amount + 100 “DUES” FROM transactions;
B. SELECT customer_id AS “CUSTOMER-ID”, transaction_date AS “DATE”, amount + 100 DUES FROM transactions;
C. SELECT customer_id AS CUSTOMER-ID, transaction_date AS TRANS_DATE, amount + 100 “DUES AMOUNT”
FROM transactions;
D. SELECT customer_id CUSTID, transaction_date TRANS_DATE, amount + 100 DUES FROM transactions;
E. SELECT customer_id AS `CUSTOMER-ID\\’, transaction_date AS DATE, amount + 100 `DUES AMOUNT\\’ FROM
transactions;
Correct Answer: BD

QUESTION 4
View the Exhibit and examine the structure of the PRODUCTS table. Which two tasks require subqueries? (Choose two)

A. Display the number of products whose PROD_LIST_PRICE is more than the average PROD_LIST_PRICE
B. Display suppliers whose PROD_LIST_PRICE is less than 1000
C. Display products whose PROD_MIN_PRICE is more than the average PROD_LIST_PRICE of all products, and
whose status is orderable
D. Display the total number of products supplied by supplier 102 which have a product status of obsolete
E. Display the minimum PROD_LIST_PRICE for each product status
Correct Answer: AC

QUESTION 5
In the SALES database, DEFERRED_SEGMENT_CREATION is TRUE.
Examine this command:
SQL> CREATE TABLE T1(c1 INT PRIMARY KEY, c2 CLOB);
Which segment or segments, if any, are created as a result of executing the command?
A. T1, an index segment for the primary key, a LOB segment, and a lob index segment
B. no segments are created
C. T1 only
D. T1 and an index segment created for the primary key only
E. T1, an index segment for the primary key, and a LOB segment only
Correct Answer: C

QUESTION 6
A database is configured to use automatic undo management with temporary undo enabled.
An UPDATE is executed on a temporary table.
Where is the UNDO stored?
A. in the undo tablespace
B. in the SYSAUX tablespace
C. in the SGA
D. in the PGA
E. in the temporary tablespace
Correct Answer: A
Reference: https://docs.oracle.com/database/121/ADMIN/undo.htm#ADMIN11478 (16.7)

QUESTION 7
In one of your databases, you create a user, HR, and then execute this command: GRANT CREATE SESSION TO hr
WITH ADMIN OPTION;
Which three actions can HR perform? (Choose three.)
A. Revoke the CREATE SESSION privilege from other users
B. Revoke the CREATE SESSION privilege from user HR
C. login to the database instance
D. Grant the CREATE SESSION privilege with ADMIN OPTION to other users
E. Execute DDL statements in the HR schema
F. Execute DML statements in the HR schema
Correct Answer: ADE
Reference: https://docs.oracle.com/cd/B28359_01/network.111/b28531/authorization.htm#DBSEG224

QUESTION 8
Examine these commands:

Which two statements are true about the sqlldr execution? (Choose two.)
A. It overwrites data in EMP with data in EMP.DAT
B. It uses the database buffer cache to load data
C. It generates a log that contains control file entries, which can be used with normal SQL*Loader operations
D. It generates a SQL script that it uses to load data from EMP.DAT to EMP
E. It appends data from EMP.DAT to EMP
Correct Answer: BD

QUESTION 9
In the ORCL database, UNDOTBS1 is the active undo tablespace with these properties:
1.
A size of 100 MB
2.
AUTOEXTEND is off
3.
UNDO_RETENTION is set to 15 minutes
4.
It has RETENTION GUARANTEE
UNDOTBS1 fills with uncommitted undo 10 minutes after the database opens.
What will happen when the next update is attempted by any transaction?
A. It succeeds and the generated undo is stored in SYSTEM.
B. It fails and returns the error message “ORA-30036: unable to extend segment by 8 in undo tablespace
\\’UNDOTBS1\\’”.
C. It succeeds and the least recently written undo block of UNDOTBS1 is overwritten by the generated undo.
D. It succeeds and the generated undo is stored in SYSAUX.
E. It succeeds and the least recently read undo block of UNDOTBS1 is overwritten by the generated undo.
Correct Answer: C

QUESTION 10
Which three statements are true about the Oracle to join and ANSI join syntax? (Choose three.)
A. The Oracle join syntax supports the creation of a Cartesian product of two tables
B. The Oracle join syntax performs better than the SQL:1999 compliant ANSI join syntax
C. The SQL:1999 compliant ANSI join syntax supports natural joins
D. The SQL:1999 compliant ANSI join syntax supports the creation of a Cartesian product of two tables
E. The Oracle join syntax only supports right outer joins
F. The Oracle join syntax supports natural joins
G. The Oracle join syntax performs less well than the SQL:1999 compliant ANSI join syntax
Correct Answer: CDF

QUESTION 11
Which two tasks can you perform using DBCA for databases? (Choose two.)
A. Configure a nonstandard block size for a new database
B. Register a new database with an available Enterprise Manager Management server
C. Change the standard block size of an existing database
D. Configure incremental backups for a new database
E. Enable flashback database for an existing database
Correct Answer: BC
Reference: https://docs.oracle.com/cd/B16254_01/doc/server.102/b14196/install003.htm

QUESTION 12
You have been tasked to create a table for a banking application.
One of the columns must meet three requirements:
1.
Be stored in a format supporting date arithmetic without using conversion functions
2.
Store a loan period of up to 10 years
3.
Be used for calculating interest for the number of days the loan remains unpaid
Which data type should you use?
A. INTERVAL YEAR TO MONTH
B. INTERVAL DAY TO SECOND
C. TIMESTAMP WITH LOCAL TIMEZONE
D. TIMESTAMP
E. TIMESTAMP WITH TIMEZONE
Correct Answer: B

QUESTION 13
Which two statements are true about the DUAL table? (Choose two.)
A. It can be accessed only by the SYS user
B. It consists of a single row and single column of VARCHAR2 data type
C. It can display multiple rows but only a single column
D. It can be used to display only constants or pseudo columns
E. It can be accessed by any user who has the SELECT privilege in any schema
F. It can display multiple rows and columns
Correct Answer: AB Reference: https://en.wikipedia.org/wiki/DUAL_table

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