Oracle Database 19c 1Z0-082 Real Exam Questions and Answers FREE Updated on Dec 05, 2021
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NEW QUESTION 42
Examine these commands:
Which two statements are true about the sqlldrexecution? (Choose two.)
- A. It appends data from EMP.DAT to EMP
- B. It generates a log that contains control file entries, which can be used with normal SQL*Loader operations
- C. It overwrites data in EMP with data in EMP.DAT
- D. It uses the database buffer cache to load data
- E. It generates a sql script that it uses to load data from EMP.DAT to EMP
Answer: D,E
NEW QUESTION 43
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. The value is changed for the current instance and in the PFILE
- C. The value is changed only in the PFILE and takes effect at the next instance startup
- D. Change is applied to the current instance, but does not persist after instance restart
Answer: D
NEW QUESTION 44
Which two are true about conventional path SQL load? (Choose two.)
- A. It always generates redo.
- B. It cannot load data into clustered tables.
- C. It enforces referential integrity constraints.
- D. It does not generate UNDO.
- E. It locks objects being processed.
Answer: C,D
NEW QUESTION 45
Which two are true about Oracle recovery and data protection solutions? (Choose two.)
- A. Data Recovery Advisor can be used to restore a single file from an RMAN backupset.
- B. Data Recovery Advisor can be used to validate backup strategies.
- C. Oracle Data Guard can prevent data loss caused by a site failure.
- D. RMAN can be used to roll back committed transactions.
- E. RMAN can be used to FLASHBACK a database.
Answer: C,E
NEW QUESTION 46
Which three statements are true about the DESCRIBE command? (Choose three.)
- A. It can be used only from SQL *Plus
- B. It can be used to display the structure of an existing view
- C. It displays all constraints that are defined for each column
- D. It displays the NOT NULL constraint for any columns that have that constraint
- E. It can be used from SQL Developer
- F. It displays the PRIMARY KEY constraint for any column or columns that have that constraint
Answer: A,B,D
NEW QUESTION 47
Which three statements are true about the tools used to configure Oracle Net Services? (Choose three.)
- A. The lsnrctl utility requires a listener.ora file to exist before it is started
- B. Enterprise Manager Cloud Control can be used to centrally configure net service names for any database server target
- C. Oracle Net Manager can be used to centrally configure listeners on any database server target
- D. The Oracle Net Configuration Assistant is only used when running the Oracle installer
- E. Enterprise Manager Cloud Control can be used to centrally configure listeners on any managed database server
- F. Oracle Net Manager can be used to locally configure naming methods on a database server
Answer: B,E,F
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 48
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 only
- B. T1, an index segment for the primary key, a LOB segment, and a lobindex segment
- C. no segments are created
- 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
Answer: A
Explanation:
Explanation/Reference:
NEW QUESTION 49
In one of your databases, user KING is:
1. Not a DBA user
2. An operating system (OS) user
Examine this command and its output:
What must you do so that KING is authenticated by the OS when connecting to the database instance?
- A. Grant DBA to KING
- B. Unset REMOTE_LOGIN_PASSWORDFILE
- C. Have the OS administrator add KING to the OSDBA group
- D. Alter user KING to be IDENTIFIED EXTERNALLY
- E. Set OS_AUTHEN_PREFIX to OPS$
Answer: B
NEW QUESTION 50
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. Employees 100 and 200 will have the same JOB_ID as before the update command
- B. Employee 100 will have JOB_ID set to the same value as the JOB_ID of employee 200
- C. Employee 200 will have JOB_ID set to the same value as the JOB_ID of employee 100
- D. Employee 200 will have SALARY set to the same value as the SALARY of employee 100
- E. Employees 100 and 200 will have the same SALARY as before the update command
- F. Employee 100 will have SALARY set to the same value as the SALARY of employee 200
Answer: C,F
NEW QUESTION 51
Which two statements are true about views used for viewing tablespace and datafile information?
(Choose two.)
- A. V$TABLESPACE displays information that is contained in the controlfile about tablespaces
- B. Tablespace free space can be viewed in V$TABLESPACE
- C. Tablespace free space can be viewed in DBA_TABLESPACES
- D. A datafile can be renamed when the database is in MOUNT state and the new file name is displayed when querying DBA_DATA_FILES after the database is opened
- E. V$TABLESPACE displays information about tablespaces contained in the data dictionary
Answer: A,D
NEW QUESTION 52
Which three statements are true about inner and outer joins? (Choose three.)
- A. Outer joins can only be used between two tables per query
- B. A full outer join returns matched and unmatched rows
- C. Outer joins can be used when there are multiple join conditions on two tables
- D. An inner join returns matched rows
- E. A full outer join must use Oracle syntax
- F. A left or right outer join returns only unmatched rows
Answer: B,D,F
NEW QUESTION 53
You need to calculate the number of days from 1st January 2019 until today.
Dates are stored in the default format of DD-MON-RR.
Which two queries give the required output? (Choose two.)
- A. SELECT TO_CHAR(SYSDATE, `DD-MON-YYYY') ?'01-JAN-2019' FROM DUAL;
- B. SELECT ROUND(SYSDATE ?'01-JAN-2019') FROM DUAL;
- C. SELECT ROUND(SYSDATE ?TO_DATE(`01/JANUARY/2019')) FROM DUAL;
- D. SELECT TO_DATE(SYSDATE, `DD/MONTH/YYYY') ?`01/JANUARY/2019' FROM DUAL;
- E. SELECT SYSDATE ?TO_DATE('01-JANUARY-2019') FROM DUAL;
Answer: A,B
NEW QUESTION 54
Examine the description of the SALES1 table:
SALES2 is a table with the same description as SALES1.
Some sales data is duplicated in both tables.
You want to display the rows from the SALES1 table which are not present in the SALES2 table.
Which set operator generates the required output?
- A. SUBTRACT
- B. INTERSECT
- C. MINUS
- D. UNION ALL
- E. UNION
Answer: C
NEW QUESTION 55
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 consists of a single row and single column of VARCHAR2 data type
- C. It can be accessed only by the SYS user
- D. It can display multiple rows and columns
- E. It can display multiple rows but only a single column
- F. It can be accessed by any user who has the SELECT privilege in any schema
Answer: B,C
Explanation:
Explanation/Reference: https://en.wikipedia.org/wiki/DUAL_table
NEW QUESTION 56
Which two statements are true about the PMON background process? (Choose two.)
- A. It frees resources held by abnormally terminated processes
- B. It registers database services with all local and remote listeners known to the database instance
- C. It kills sessions that exceed idle time
- D. It records checkpoint information in the control file
- E. It frees unused temporary segments
Answer: A,B
Explanation:
https://docs.oracle.com/cd/B19306_01/server.102/b14220/process.htm
NEW QUESTION 57
You execute this command:
Sufficient storage is available in filesystem /u01.
Which two statements are true about the BIG_TBS tablespace? (Choose two.)
- A. It must be bigger than the largest SMALLFILE tablespace
- B. Additional data files may not be added
- C. AUTOEXTEND is possible for the datafile
- D. It will be a dictionary-managed tablespace by default
- E. It will always have a 32K blocksize
Answer: B,C
NEW QUESTION 58
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. The + binary operator has the highest precedence in an expression in a SQL statement
- C. The concatenation operator | | is always evaluated before addition and subtraction in an expression
- D. Arithmetic operators with equal precedence are evaluated from left to right within an expression
- E. NULLS influence the precedence of operators in an expression
Answer: A,D
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 59
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. Employees 100 and 200 will have the same JOB_ID as before the update command
- B. Employee 100 will have JOB_ID set to the same value as the JOB_ID of employee 200
- C. Employee 200 will have JOB_ID set to the same value as the JOB_ID of employee 100
- D. Employee 200 will have SALARY set to the same value as the SALARY of employee 100
- E. Employees 100 and 200 will have the same SALARY as before the update command
- F. Employee 100 will have SALARY set to the same value as the SALARY of employee 200
Answer: C,F
NEW QUESTION 60
Which two statements are true about single row functions? (Choose two.)
- A. FLOOR : returns the smallest integer greater than or equal to a specified number
- B. MOD : returns the quotient of a division operation
- C. CEIL : can be used for positive and negative numbers
- D. TRUNC : can be used with NUMBER and DATE values
- E. CONCAT : can be used to combine any number of values
Answer: B,D
Explanation:
https://docs.oracle.com/en/database/oracle/oracle-database/18/sqlrf/Single-Row- Functions.html#GUID-B93F789D-B486-49FF-B0CD-0C6181C5D85C
NEW QUESTION 61
The SCOTT/TIGER user exists in two databases, BOSTON_DB and DALLAS_DB, in two different locations.
Each database has a tnsnames.ora file defining DALLAS_DB as a service name.
Examine this command:
CREATE DATABASE LINK dblink1 CONNECT TO scott IDENTIFIED BY tiger USING 'dallas_db'; How do you execute the command so that only SCOTT in BOSTON_DB can access the SCOTT schema in DALLAS_DB?
- A. as SCOTT in both the databases
- B. as SCOTT in DALLAS_DB
- C. as SYS in both the databases
- D. as SCOTT in BOSTON_DB
- E. as SCOTT in BOSTON_DB and SYS in DALLAS_DB
Answer: D
Explanation:
https://docs.oracle.com/cd/B28359_01/server.111/b28310/ds_concepts002.htm#ADMIN12085 Database links are either private or public. If they are private, then only the user who created the link has access; if they are public, then all database users have access.
https://docs.oracle.com/database/121/SQLRF/statements_5006.htm#SQLRF01205
NEW QUESTION 62
Which two statements are true about the Automatic Diagnostic Repository (ADR)? (Choose two.)
- A. The ADR base defaults to $ORACLE_HOME/dbs if the DIAGNOSTIC_DEST parameter and the ORACLE_BASE environment variable are not set
- B. It is held inside an Oracle database schema
- C. It supports diagnostics for Automatic Storage Management (ASM)
- D. It supports diagnostics for Oracle Clusterware
- E. The ADR base defaults to $ORACLE_HOME/rdbms/admin ifneither DIAGNOSTIC_DEST nor ORACLE_BASE is set
Answer: C,D
Explanation:
The database, Oracle Automatic Storage Management (Oracle ASM), the listener, Oracle Clusterware, and other Oracle products or components store all diagnostic data in the ADR. https://docs.oracle.com/database/121/ADMIN/diag.htm#ADMIN11260
NEW QUESTION 63
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Who should take the Oracle 1z0-082: Oracle Database Administration I Exam
This course is designed for Database Administrators and Database production Systems Administrators.
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