Oracle 1Z0-082 Daily Practice Exam New 2026 Updated 145 Questions
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Oracle 1Z0-082 exam is an essential step towards becoming a certified Oracle Database Administrator. It requires a thorough understanding of Oracle Database Administration concepts and techniques. 1Z0-082 exam covers various topics, including Oracle Database Architecture, Installation and Configuration, Backup and Recovery, Security, and Performance Tuning. Passing 1Z0-082 exam validates one's skills and knowledge in Oracle Database Administration and opens up various career opportunities in this field.
The Oracle 1Z0-082 exam comprises of 83 multiple choice questions and has a time limit of 2 hours. The topics covered in the exam include Oracle Database Architecture, Database Backup and Recovery, Database Security, Database Maintenance, and Performance Tuning. 1Z0-082 exam is conducted in a proctored environment, and candidates are required to score at least 64% to pass the exam.
Passing the Oracle 1Z0-082 exam is a great achievement for any database administrator. It demonstrates a deep understanding of Oracle database administration and a commitment to professional development. Oracle Database Administration I certification is also highly regarded by employers, who often require it for job openings in database administration.
NEW QUESTION # 12
Your database instance is started with a PFILE.
Examine these parameters:
You want to increase the size of the buffer cache.
Free memory is available to increase the size of the buffer cache.
You execute the command:
SQL> ALTER SYSTEM SET DB_CACHE_SIZE=1024M;
What is the outcome?
- A. It fails because the SCOPE clause is missing
- B. Change is applied to the current instance, but does not persist after instance restart
- C. The value is changed for the current instance and in the PFILE
- D. The value is changed only in the PFILE and takes effect at the next instance startup
Answer: B
Explanation:
Reference:
https://docs.oracle.com/database/121/SQLRF/statements_2017.htm#SQLRF00902
NEW QUESTION # 13
Which two statements are true about UNDO and REDO? (Choose two.)
- A. The generation of REDO generates UNDO
- B. DML modifies Oracle database objects and only generates UNDO
- C. The generation of UNDO generates REDO
- D. DML modifies Oracle database objects and only generates REDO
Answer: A,C
NEW QUESTION # 14
Which two are true about a SQL statement using SET operators such as UNION? (Choose two.)
- A. 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.
- B. 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.
- C. The names and number of columns must be identical for all SELECT statements in the query.
- D. The number, but not names, of columns must be identical for all SELECT statements in the query.
- E. 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.
Answer: B,E
NEW QUESTION # 15
Which two tasks can you perform using DBCA for databases? (Choose two.)
- A. Enable flashback database for an existing database
- B. Change the standard block size of an existing database
- C. Register a new database with an available Enterprise Manager Management server
- D. Configure a nonstandard block size for a new database
- E. Configure incremental backups for a new database
Answer: C,D
NEW QUESTION # 16
The orders table has a column ORDER_DATE of data type date.
The default display format for a date Is DD-MON-RR.
Which two where conditions demonstrate the correct usage of conversion functions?
- A. WHERE order_date > TO_CHAR(ADD_MONTHS(SYSDATE, 6), 'MON DD YYYY')
- B. WHERE order_date > TO_DATE<ADD_MONTHS(SYSDATE, c) , 'MON DD YYYY')
- C. WHERE TO_CHAR(order_date, 'MON DD YYYY') = 'JAN 20 2019'
- D. WHERE order_date IN (TO_DATE ('Oct 21 2018', 'Mon DD YYYY'), TC_CHAR('Nov 21 2018', 'Mon DD YYYY'))
- E. WHERE order date > TO DATE('JUL 10 2018', *MON DD YYYY')
Answer: C,E
NEW QUESTION # 17
Which is the default column or columns for sorting output from compound queries using SET operators such as intersect In a SQL statement?
- A. the first number or varchar2 column in the last select of the compound query
- B. the first varchab2 column in the first select of the compound query
- C. the first column in the first select of the compound query
- D. the first number column in the first select of the compound query
- E. the first column in the last select of the compound query
Answer: C
NEW QUESTION # 18
Which three files are used by conventional path SQL*Loader when the TABLE option is not specified? (Choose three.)
- A. control files
- B. input files
- C. dump files
- D. password files
- E. bad files
Answer: A,B,E
NEW QUESTION # 19
What is true about non-equijoin statement performance? (Choose two.)
- A. Table aliases can improve performance
- B. The BETWEEN condition always performs better than using the >= and <= conditions
- C. The BETWEEN condition always performs less well than using the >= and <= conditions
- D. The Oracle join syntax performs better than the SQL:1999 compliant ANSI join syntax
- E. The join syntax used makes no difference to performance
Answer: A,D
Explanation:
Explanation
NEW QUESTION # 20
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 is paused and can be resumed
- B. It continues to run in the background
- C. You can no longer monitor it
- D. It terminates
- E. You can reattach to it and monitor it
Answer: A,E
Explanation:
Reference:
https://blog.oracle48.nl/killing-and-resuming-datapump-expdp-and-impdp-jobs/
NEW QUESTION # 21
Which two statements are true about the configuration and use of UNDO_RETENTION with GURANTEED ? (Choose two.) RETENTION
- A. UNDO_RETENTION specifies how long all types of UNDO are retained.
- B. Unexpired UNDO is always retained.
- C. UNDO_RETENTION specifies for how long Oracle attempts to keep unexpired UNDO.
- D. UNDO_RETENTION specifies for how long Oracle attempts to keep expired and unexpired UNDO.
- E. Active UNDO is always retained.
Answer: A,B
NEW QUESTION # 22
Examine these commands:
Which two statements are true about the sqlldr execution? (Choose two.)
- A. It generates a log that contains control file entries, which can be used with normal SQL*Loader operations
- B. It uses the database buffer cache to load data
- C. It generates a sql script that it uses to load data from EMP.DAT to EMP
- D. It appends data from EMP.DAT to EMP
- E. It overwrites data in EMP with data in EMP.DAT
Answer: A,D
NEW QUESTION # 23
An Oracle database session has an uncommitted transaction in progress which updated 5000 rows in a table.
Which three situations does the transaction complete thereby committing the updates?
- A. when a DBA issues a successful SHUTDOWN IMMEDIATE statement and the user then issues a COMMIT
- B. when a DBA issues a successful SHUTDOWN TRANSACTIONAL statement and the user then issues a COMMIT
- C. when a CREATE INDEX statement is executed successfully in the same session
- D. when a COMMIT statement is issued by the same user from another session in the same database instance
- E. when a CREATE TABLE AS SELECT statement is executed unsuccessfully in the same session
- F. when the session logs out successfully
Answer: B,C,F
NEW QUESTION # 24
Which three statements are true about time zones, date data types, and timestamp data types in an Oracle database? (Choose three.)
- A. The CURRENT_TIMESTAMP function returns data without time zone information
- B. A TIMESTAMP data type column contains information about year, month, and day
- C. A TIMESTAMP WITH LOCAL TIMEZONE data type column is stored in the database using the time zone of the session that inserted the row
- D. The DBTIMEZONE function can return an offset from Universal Coordinated Time (UTC)
- E. The SESSIONTIMEZONE function can return an offset from Universal Coordinated Time (UTC)
Answer: A,D,E
NEW QUESTION # 25
Which two statements are true about the DUAL table? (Choose two.)
- A. It can be used to display only constants or pseudo columns
- B. It can be accessed only by the SYS user
- C. It can display multiple rows but only a single column
- D. It can be accessed by any user who has the SELECT privilege in any schema
- E. It can display multiple rows and columns
- F. It consists of a single row and single column of VARCHAR2 data type
Answer: B,F
Explanation:
Explanation/Reference: https://en.wikipedia.org/wiki/DUAL_table
NEW QUESTION # 26
Which two are true about conventional path SQL load? (Choose two.)
- A. It enforces referential integrity constraints.
- B. It cannot load data into clustered tables.
- C. It locks objects being processed.
- D. It does not generate UNDO.
- E. It always generates redo.
Answer: A,D
NEW QUESTION # 27
Which two statements are true about the Automatic Diagnostic Repository (ADR)? (Choose two.)
- A. It is held inside an Oracle database schema
- B. The ADR base defaults to $ORACLE_HOME/rdbms/admin ifneither DIAGNOSTIC_DEST nor ORACLE_BASE is set
- C. It supports diagnostics for Automatic Storage Management (ASM)
- D. It supports diagnostics for Oracle Clusterware
- E. The ADR base defaults to $ORACLE_HOME/dbs if the DIAGNOSTIC_DEST parameter and the ORACLE_BASE environment variable are not set
Answer: A,B
NEW QUESTION # 28
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. Log in to the database instance
- B. Execute DDL statements in the HR schema
- C. Revoke the CREATE SESSION privilege from user HR
- D. Grant the CREATE SESSION privilege with ADMIN OPTION to other users
- E. Execute DML statements in the HR schema
- F. Revoke the CREATE SESSION privilege from other users
Answer: B,D,F
Explanation:
Explanation/Reference: https://docs.oracle.com/cd/B28359_01/network.111/b28531/authorization.htm#DBSEG224
NEW QUESTION # 29
View the Exhibit and examine the structure of the PRODUCTS table.
Which two tasks require subqueries? (Choose two.)
- A. Display products whose PROD_MIN_PRICE is more than the average PROD_LIST_PRICE of all products, and whose status is orderable
- B. Display the number of products whose PROD_LIST_PRICE is more than the average PROD_LIST_PRICE
- C. Display the minimum PROD_LIST_PRICE for each product status
- D. Display the total number of products supplied by supplier 102 which have a product status of obsolete
- E. Display suppliers whose PROD_LIST_PRICE is less than 1000
Answer: A,B
NEW QUESTION # 30
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