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The Oracle 1Z0-082 exam is designed for professionals who are seeking to become certified in Oracle Database Administration I. The exam is designed to test the candidate's knowledge of basic database administration concepts, including installation, configuration, and maintenance of an Oracle database. The exam also tests the candidate's ability to perform database backup and recovery, manage database security, and troubleshoot common database issues.
NEW QUESTION # 64
Your database instance was shut down normally and then started in NOMOUNT state. You then execute this command:
ALTER DATABASE MOUNT;
Which two actions are performed? (Choose two.)
- A. The alert log records the execution details
- B. The Oracle background processes are started
- C. The online redo logs are opened
- D. The online data files are opened
- E. The control file is read
- F. The initialization parameter file is read
Answer: B,E
NEW QUESTION # 65
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. The value is changed only in the PFILE and takes effect at the next instance startup
- B. The value is changed for the current instance and in the PFILE
- C. Change is applied to the current instance, but does not persist after instance restart
- D. It fails because the SCOPE clause is missing
Answer: C
Explanation:
Explanation/Reference: https://docs.oracle.com/database/121/SQLRF/statements_2017.htm#SQLRF00902
NEW QUESTION # 66
Which three statements are true about a self-join? (Choose three.)
- A. It must be an inner join
- B. The query must use two different aliases for the table
- C. The ON clause must be used
- D. It can be an outer join
- E. It must be an equi join
- F. The ON clause can be used
Answer: A,B,F
NEW QUESTION # 67
You want to apply the principle of Least Privilege in all your live databases.
One of your requirements is to revoke unnecessary privileges from all users who have them using Privilege Analysis.
Which three types of analyses can be done using the DBMS_PRIVILEGE_CAPTURE package? (Choose three.)
- A. analysis of privileges that a user has on their own schema objects that they did use
- B. analysis of all privileges used by all users including administrative users in the database
- C. analysis of privileges granted directly to a role that are then used by a user who has been granted that role
- D. analysis of privileges granted indirectly to a role that are then used by a user who has been granted that role
- E. analysis of privileges that a user has on their own schema objects that they did not use
- F. analysis of all privileges used by all users but excluding administrative users in the database
Answer: C,D,F
Explanation:
https://docs.oracle.com/en/database/oracle/oracle-database/19/dbseg/performing-privilege-analysis-find-privilege-use.html#GUID-AD683DDB-D345-4702-B1F4-37B79F276B66
NEW QUESTION # 68
Table EMPLOYEES contains columns including EMPLOYEE_ID, JOB_ID and SALARY.
Only the EMPLOYEE_ID column is indexed.
Rows exist for employees 100 and 200.
Examine this statement:
Which two statements are true? (Choose two.)
- A. Employee 200 will have JOB_ID set to the same value as the JOB_ID of employee 100
- B. Employees 100 and 200 will have the same SALARY as before the update command
- C. Employee 100 will have SALARY set to the same value as the SALARY of employee 200
- D. Employees 100 and 200 will have the same JOB_ID as before the update command
- E. Employee 200 will have SALARY set to the same value as the SALARY of employee 100
- F. Employee 100 will have JOB_ID set to the same value as the JOB_ID of employee 200
Answer: A,C
NEW QUESTION # 69
The SALES_Q1 and USERS tablespaces exist in one of your databases and TEMP is a temporary tablespace.
Segment creation is not deferred.
You execute this command:
Which three statements must be true so that the SALES user can create tables in SALES_Q1? (Choose three.)
- A. The sales user must have a quota on the SALES_Q1 tablespace to hold all the rows to be inserted into any table in their schema
- B. The sales user must have their quota on the users tablespace removed
- C. The sales user must have been granted the CREATE TABLE privilege
- D. The sales user must have been granted the CREATE SESSION privilege
- E. The sales user must have a quota on the SALES_Q1 tablespace to hold the initial extends of all tables they plan to create in their schema
- F. The sales user must have a quota on the TEMP tablespace
Answer: B,C,E
NEW QUESTION # 70
Which two statements are true about the DUAL table? (Choose two.)
- A. It can be accessed by any user who has the SELECT privilege in any schema
- B. It can display multiple rows but only a single column
- C. It consists of a single row and single column of VARCHAR2 data type
- D. It can be used to display only constants or pseudo columns
- E. It can be accessed only by the SYS user
- F. It can display multiple rows and columns
Answer: C,E
NEW QUESTION # 71
Which three statements are true about a self join? (Choose three.)
- A. The query must use two different aliases for the table
- B. It must be an equijoin
- C. The ON clause must be used
- D. It must be an inner join
- E. It can be an outer join
- F. The ON clause can be used
Answer: A,E,F
NEW QUESTION # 72
Which two statements are true about single row functions? (Choose two.)
- A. CONCAT : can be used to combine any number of values
- B. TRUNC : can be used with NUMBER and DATE values
- C. FLOOR : returns the smallest integer greater than or equal to a specified number
- D. MOD : returns the quotient of a division operation
- E. CEIL : can be used for positive and negative numbers
Answer: B,E
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 # 73
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. Grant the CREATE SESSION privilege with ADMIN OPTION to other users
- B. Log in to the database instance
- C. Revoke the CREATE SESSION privilege from user HR
- D. Execute DML statements in the HR schema
- E. Execute DDL statements in the HR schema
- F. Revoke the CREATE SESSION privilege from other users
Answer: A,E,F
Explanation:
https://docs.oracle.com/cd/B28359_01/network.111/b28531/authorization.htm#DBSEG224
NEW QUESTION # 74
Which three statements are true about the DESCRIBE command? (Choose three.)
- A. It can be used only from SQL *Plus
- B. It displays the NOT NULL constraint for any columns that have that constraint
- C. It displays the PRIMARY KEY constraint for any column or columns that have that constraint
- D. It can be used from SQL Developer
- E. It displays all constraints that are defined for each column
- F. It can be used to display the structure of an existing view
Answer: A,B,F
NEW QUESTION # 75
Examine the description of the EMPLOYEES table:
Which query is valid?
- A. SELECT dept_id, AVG(MAX(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, MAX(AVG(salary)) FROM employees GROUP BY dept_id;
- D. SELECT dept_id, join_date, SUM(salary) FROM employees GROUP BY dept_id;
Answer: D
NEW QUESTION # 76
Which three statements are true about single-row functions? (Choose three.)
- A. They return a single result row per table
- B. They can be used only in the WHERE clause of a SELECT statement
- C. They can accept only one argument
- D. The argument can be a column name, variable, literal or an expression
- E. They can be nested to any level
- F. The data type returned can be different from the data type of the argument
Answer: A,D,F
Explanation:
https://www.folkstalk.com/2012/01/oracle-single-row-functions-examples.html
NEW QUESTION # 77
Which two statements are true about the rules of precedence for operators? (Choose two.)
- A. Multiple parentheses can be used to override the default precedence of operators in an expression
- B. NULLS influence the precedence of operators in an expression
- C. The concatenation operator | | is always evaluated before addition and subtraction in an expression
- D. The + binary operator has the highest precedence in an expression in a SQL statement
- E. Arithmetic operators with equal precedence are evaluated from left to right within an expression
Answer: A,E
Explanation:
Reference:
https://docs.oracle.com/cd/B19306_01/server.102/b14200/operators001.htm
https://docs.oracle.com/cd/A87860_01/doc/server.817/a85397/operator.htm Precedence is the order in which Oracle evaluates different operators in the same expression. When evaluating an expression containing multiple operators, Oracle evaluates operators with higher precedence before evaluating those with lower precedence. Oracle evaluates operators with equal precedence from left to right within an expression.
NEW QUESTION # 78
Which two tasks can you perform using DBCA for databases? (Choose two.)
- A. Change the standard block size of an existing database
- B. Enable flashback database for an existing database
- C. Configure incremental backups for a new database
- D. Register a new database with an available Enterprise Manager Management server
- E. Configure a nonstandard block size for a new database
Answer: D,E
Explanation:
Reference:
https://docs.oracle.com/cd/B16254_01/doc/server.102/b14196/install003.htm
NEW QUESTION # 79
Which two statements are true about trace files produced by the Oracle Database server? (Choose two.)
- A. They can be written by server processes
- B. Trace files are written to the Fast Recovery Area (FRA)
- C. They can be written by background processes
- D. All trace files contain error information that require contacting Oracle Support
- E. Trace file names are based on the database name concatenated with a sequential number
Answer: A,C
Explanation:
Reference:
https://gerardnico.com/db/oracle/trace_file
https://docs.oracle.com/html/E25494_01/monitoring001.htm
Each server and background process can write to an associated trace file. When an internal error is detected by a process, it dumps information about the error to its trace file. Some of the information written to a trace file is intended for the database administrator, and other information is for Oracle Support Services. Trace file information is also used to tune applications and instances.
NEW QUESTION # 80
Examine these commands:
Which two statements are true about the sqlldrexecution? (Choose two.)
- A. It overwrites data in EMP with data in EMP.DAT
- B. It generates a sql script that it uses to load data from EMP.DAT to EMP
- C. It appends data from EMP.DAT to EMP
- D. It uses the database buffer cache to load data
- E. It generates a log that contains control file entries, which can be used with normal SQL*Loader operations
Answer: B,D
NEW QUESTION # 81
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 column in the first select of the compound query
- B. the first varchab2 column in the first select of the compound query
- C. the first number column in the first select of the compound query
- D. the first column in the last select of the compound query
- E. the first number or varchar2 column in the last select of the compound query
Answer: A
NEW QUESTION # 82
Which three statements are true about views in an Oracle database? (Choose three.)
- A. The WITH CHECK clause prevents certain rows from being updated or inserted
- B. Inserting one or more rows using a view whose defining query contains a GROUP BY clause will cause an error
- C. Views can be updated without the need to re-grant privileges on the view
- D. Tables in the defining query of a view must always exist in order to create the view
- E. Data Manipulation Language (DML) can always be used on views
- F. The WITH CHECK clause prevents certain rows from being displayed when querying the view
- G. Deleting one or more rows using a view whose defining query contains a GROUP BY clause will cause an error
Answer: B,D,E
NEW QUESTION # 83
Table ORDER_ITEMScontains columns ORDER_ID, UNIT_PRICEand 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. Both the statements give the same output.
- B. Statement 2 returns only one row of output.
- C. Statement 1 returns only one row of output.
- D. Statement 2 may return multiple rows of output.
- E. Both statements will return NULL if either UNIT_PRICE or QUANTITY contains NULL.
Answer: D,E
NEW QUESTION # 84
Which statement is true about aggregate functions?
- A. The MAX and MIN functions can be used on columns with character data types
- B. Aggregate functions can be used in any clause of a SELECT statement
- C. The AVG function implicitly converts NULLS to zero
- D. Aggregate functions can be nested to any number of levels
Answer: A
NEW QUESTION # 85
Which two statements are true?
- A. SALES1 is created with 1 row.
- B. SALES1 is created with 55,000 rows.
- C. SALES1 has primary key and unique constraints on any selected columns which had those constraints in the sales table.
- D. SALES1 has not NULL constraints on any selected columns which had those constraints in the sales table.
- E. SALES1 is created with no rows.
Answer: B,D
NEW QUESTION # 86
Examine the description of the CUSTOMERS table:
For customers whose income level has a value, you want to display the first name and due amount as 5% of their credit limit. Customers whose due amount is null should not be displayed.
Which query should be used?
- A. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNT
FROM customers
WHERE cust_income_level != NULL
AND due_amount != NULL; - B. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNT
FROM customers
WHERE cust_income_level <> NULL
AND due_amount <> NULL; - C. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNT
FROM customers
WHERE cust_income_level IS NOT NULL
AND cust_credit_limit IS NOT NULL; - D. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNT
FROM customers
WHERE cust_income_level IS NOT NULL
AND due_amount IS NOT NULL; - E. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNT
FROM customers
WHERE cust_income_level != NULL
AND cust_credit_level !=NULL;
Answer: C
NEW QUESTION # 87
Which two are true about shrinking a segment online? (Choose two.)
- A. To shrink a table it must have a UNIQUE KEY constraint
- B. To shrink a table it must have row movement enabled
- C. To shrink a table it must have a PRIMARY KEY constraint
- D. It always eliminates all migrated rows if any exist in the table
- E. It is not possible to shrink either indexes or Index Organized Tables (IOTs)
- F. It must be in a tablespace that uses Automatic Segment Space Management (ASSM)
Answer: B,C
Explanation:
https://docs.oracle.com/cd/B19306_01/server.102/b14200/statements_3001.htm
NEW QUESTION # 88
Which two tasks can you perform using DBCA for databases? (Choose two.)
- A. Configure a nonstandard block size for a new database
- B. Enable flashback database for an existing database
- C. Change the standard block size of an existing database
- D. Configure incremental backups for a new database
- E. Register a new database with an available Enterprise Manager Management server
Answer: C,E
Explanation:
Explanation/Reference: https://docs.oracle.com/cd/B16254_01/doc/server.102/b14196/install003.htm
NEW QUESTION # 89
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