1Z0-082 Study Guide: Latest [Jan 20, 2024] Realistic Verified 1Z0-082 Dumps
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Oracle 1Z1-082 (Oracle Database Administration I) Certification Exam is a comprehensive exam that tests the skills and knowledge required for successful database administration in an Oracle environment. 1Z0-082 exam is designed to validate the candidate's ability to perform various tasks related to database administration, including database installation, configuration, patching, backup and recovery, performance tuning, and security management. 1Z0-082 exam is intended for individuals who have a strong understanding of the Oracle database and related technologies and have experience working in a database administration role.
NEW QUESTION # 33
Which three statements are true about dropping and unused columns in an Oracle database? (Choose three.)
- A. Partition key columns cannot be dropped.
- B. A column that is set to UNUSED still counts towards the limit of 1000 columns per table
- C. A primary key column referenced by another column as a foreign key can be dropped if using the CASCADE option.
- D. An UNUSED column's space is reclaimed automatically when the block containing that column is next queried.
- E. A DROP COLUMN command can be rolled back
- F. An UNUSED column's space is reclaimed automatically when the row containing that column is next queried.
Answer: B,C,D
NEW QUESTION # 34
Which three activities are recorded in the database alert log? (Choose three.)
- A. session logins and logouts
- B. Data Definition Language (DDL) statements
- C. block corruption errors
- D. deadlock errors
- E. non-default database parameters
Answer: C,D,E
Explanation:
https://docs.oracle.com/cd/B28359_01/server.111/b28310/monitoring001.htm#ADMIN11247
NEW QUESTION # 35
Which three statements are true about the tools used to configure Oracle Net Services? (Choose three.)
- A. The Oracle Net Configuration Assistant is only used when running the Oracle installer
- B. Enterprise Manager Cloud Control can be used to centrally configure listeners on any managed database server
- C. Enterprise Manager Cloud Control can be used to centrally configure net service names for any database server target
- D. Oracle Net Manager can be used to centrally configure listeners on any database server target
- E. Oracle Net Manager can be used to locally configure naming methods on a database server
- F. The lsnrctl utility requires a listener.ora file to exist before it is started
Answer: B,C,E
Explanation:
https://docs.oracle.com/en/database/oracle/oracle-database/19/netag/introducing-oracle-net-services.html#GUID-6B1F0584-887D-4D2A-B982-40ACF15DF985
* Oracle Enterprise Manager Cloud Control combines configuration functionality across multiple file systems, along with listener administrative control to provide an integrated environment for configuring and managing Oracle Net Services. * Oracle Net Manager provides configuration functionality for an Oracle home on a local client or server host.
NEW QUESTION # 36
Which three files are used by conventional path SQL*Loader when the TABLE option is not specified? (Choose three.)
- A. dump files
- B. input files
- C. control files
- D. password files
- E. bad files
Answer: B,C,E
NEW QUESTION # 37
Which three statements are true about dropping and unused columns in an Oracle database?
(Choose three.)
- A. Partition key columns cannot be dropped.
- B. A column that is set to UNUSED still counts towards the limit of 1000 columns per table
- C. A primary key column referenced by another column as a foreign key can be dropped if using the CASCADE option.
- D. An UNUSED column's space is reclaimed automatically when the block containing that column is next queried.
- E. A DROP COLUMN command can be rolled back
- F. An UNUSED column's space is reclaimed automatically when the row containing that column is next queried.
Answer: B,C,D
NEW QUESTION # 38
Which two are true about a SQL statement using SET operators such as UNION? (Choose two.)
- A. The number, but not names, of columns must be identical for all SELECT statements in the query.
- B. The data type of each column returned by the second query must be implicitly convertible to the data type of the corresponding column returned by the first query.
- C. The names and number of columns must be identical for all SELECT statements in the query.
- D. The data type group of each column returned by the second query must match the data type group of the corresponding column returned by the first query.
- E. The data type of each column returned by the second query must exactly match the data type of the corresponding column returned by the first query.
Answer: D,E
NEW QUESTION # 39
Which three statements are true about table data storage in an Oracle Database? (Choose three.)
- A. Multiple row pieces from the same row may be stored in the same block
- B. A table row piece can be chained across several database blocks
- C. Data block free space is always contiguous in the middle of the block
- D. Index block free space is always contiguous in the middle of the block
- E. Multiple row pieces from the same row may be stored in different database blocks
- F. Data block headers contain their own Data Block Address (DBA)
Answer: B,C,E
NEW QUESTION # 40
Table ORDER_ITEMS contains columns ORDER_ID, UNIT_PRICE and QUANTITY, of data type NUMBER.
Examine these SQL statements:
Statement 1:
SELECT MAX(unit_price * quantity) "Maximum Order"
FROM order_items;
Statement 2:
SELECT MAX(unit_price * quantity) "Maximum Order"
FROM order_items
GROUP BY order_id;
Which two statements are true?
- A. Statement 2 may return multiple rows of output.
- B. Both statements will return NULL if either UNIT_PRICE or QUANTITY contains NULL.
- C. Statement 1 returns only one row of output.
- D. Both the statements give the same output.
- E. Statement 2 returns only one row of output.
Answer: A,C
Explanation:
https://docs.oracle.com/javadb/10.8.3.0/ref/rrefsqlj27781.html
The Expression can contain multiple column references or expressions, but it cannot contain another aggregate or subquery. It must evaluate to a built-in data type. You can therefore call methods that evaluate to built-in data types. (For example, a method that returns a java.lang.Integer or int evaluates to an INTEGER.) If an expression evaluates to NULL, the aggregate skips that value.
NEW QUESTION # 41
What is true about non-equijoin statement performance? (Choose two.)
- A. The join syntax used makes no difference to performance
- B. The BETWEEN condition always performs better than using the >= and <= conditions
- C. Table aliases can improve performance
- D. The Oracle join syntax performs better than the SQL:1999 compliant ANSI join syntax
- E. The BETWEEN condition always performs less well than using the >= and <= conditions
Answer: C,D
NEW QUESTION # 42
The ORCL database has RESUMABLE__TIMEOUT = 7200 and DEFERRED_SEGMENT_CREATION = FALSE User U1 has a 1 MB quota in tablespace DATA.
U1 executes this command:
SQL> CREATE TABLE t1 AS
(SELECT object_name, sharing, created
FROM dba_objects);
U1 complains that the command is taking too long to execute.
In the alert log, the database administrator (DBA) finds this:
2017/3/6 14:45:17
statement in resumable session 'User U1(136), Session 1, Instance 1' was suspended due to ORA-01536: space quota exceeded for tablespace 'DATA' Which are three actions any one of which the DBA could take to resume the session? (Choose three.)
- A. Increase U1's quota sufficiently in DATA
- B. Drop other U1 objects in DATA
- C. Set AUTOEXTEND ON for data files in DATA
- D. Add a data file to DATA
- E. Set DEFERRED_SEGMENT_CREATION to TRUE
- F. Grant UNLIMITED TABLESPACE to U1
Answer: A,C,E
NEW QUESTION # 43
You execute this command:
CREATE SMALLFILE TABLESPACE sales
DATAFILE '/u01/app/oracle/sales01.dbf
SIZE 5G
SEGMENT SPACE MANAGEMENT AUTO;
Which two statements are true about the SALES tablespace? (Choose two.)
- A. Free space is managed using freelists
- B. Any data files added to the tablespace must have a size of 5 gigabytes
- C. It uses the database default blocksize
- D. It is a locally managed tablespace
- E. It must be smaller than the smallest BIGFILE tablespace
Answer: C,D
NEW QUESTION # 44
Examine the description of the EMPLOYEES table:
Which query is valid?
- A. SELECT dept_id, MAX(AVG(salary)) FROM employees GROUP BY dept_id;
- B. SELECT dept_id, join_date, SUM(salary) FROM employees GROUP BY dept_id, join_date;
- C. SELECT dept_id, join_date, SUM(salary) FROM employees GROUP BY dept_id;
- D. SELECT dept_id, AVG(MAX(salary)) FROM employees GROUP BY dept_id;
Answer: C
NEW QUESTION # 45
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. TIMESTAMP WITH LOCAL TIMEZONE
- C. TIMESTAMP
- D. INTERVAL DAY TO SECOND
- E. TIMESTAMP WITH TIMEZONE
Answer: D
NEW QUESTION # 46
Which three statements are true about roles?
- A. The SET ROLE statement can disable one or more roles for a session.
- B. The SET ROLE statement can enable one or more roles for a session.
- C. Object privileges may not be granted to roles.
- D. Roles must be password protected.
- E. All roles granted to a user are set on by default when the user logs in,
- F. Roles may be granted to roles.
Answer: A,C,F
NEW QUESTION # 47
You execute this command:
During the export operation, you detach from the job by using CTRL+C and then execute this command:
Export> STOP_JOB=immediate
Are you sure you wish to stop the job ([yes]/no): yes
Which two statements are true about the job? (Choose two.)
- A. It continues to run in the background
- B. It terminates
- C. You can reattach to it and monitor it
- D. You can no longer monitor it
- E. It is paused and can be resumed
Answer: B,D
NEW QUESTION # 48
Which two statements are true about single row functions? (Choose two.)
- A. CONCAT : can be used to combine any number of values
- B. FLOOR : returns the smallest integer greater than or equal to a specified number
- C. TRUNC : can be used with NUMBERand DATEvalues
- D. MOD : returns the quotient of a division operation
- E. CEIL : can be used for positive and negative numbers
Answer: C,D
Explanation:
Explanation/Reference: https://docs.oracle.com/en/database/oracle/oracle-database/18/sqlrf/Single-Row- Functions.html#GUID-B93F789D-B486-49FF-B0CD-0C6181C5D85C
NEW QUESTION # 49
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