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Oracle 1Z0-082: Oracle Database Administration I is a certification exam designed for IT professionals who are interested in pursuing a career in database administration. 1Z0-082 exam is an excellent opportunity for individuals who want to validate their skills and knowledge in managing and maintaining the Oracle Database.
Oracle 1Z0-082 exam is a comprehensive exam that covers a wide range of topics related to Oracle database administration. It evaluates the candidate's ability to configure, manage, and maintain an Oracle database, as well as their knowledge of database architecture, backup and recovery, security, and performance tuning. Passing 1Z0-082 exam demonstrates a candidate's expertise in Oracle database administration and their ability to handle complex database environments.
NEW QUESTION # 57
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 1 returns only one row of output.
- B. Statement 2 may return multiple rows of output.
- C. Both statements will return NULL if either UNIT_PRICE or QUANTITY contains NULL.
- D. Statement 2 returns only one row of output.
- E. Both the statements give the same output.
Answer: A,B
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 # 58
Examine this SQL statement:
SELECT cust_id, cust_last_name "Last Name"
FROM customers
WHERE country_id = 10
UNION
SELECT cust_id CUST_NO, cust_last_name
FROM customers
WHERE country_id = 30
Identify three ORDER BY clauses, any one of which can complete the query successfully.
(Choose three.)
- A. ORDER BY 2, cust_id
- B. ORDER BY "CUST_NO"
- C. ORDER BY "Last Name"
- D. ORDER BY 2, 1
- E. ORDER BY CUST_NO
Answer: A,C,D
NEW QUESTION # 59
Which two statements are true about the rules of precedence for operators? (Choose two.)
- A. The concatenation operator | | is always evaluated before addition and subtraction in an expression
- B. Arithmetic operators with equal precedence are evaluated from left to right within an expression
- C. The + binary operator has the highest precedence in an expression in a SQL statement
- D. Multiple parentheses can be used to override the default precedence of operators in an expression
- E. NULLS influence the precedence of operators in an expression
Answer: C,D
Explanation:
Explanation/Reference: https://docs.oracle.com/cd/B19306_01/server.102/b14200/operators001.htm
NEW QUESTION # 60
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. Change is applied to the current instance, but does not persist after instance restart
- D. The value is changed only in the PFILE and takes effect at the next instance startup
Answer: C
Explanation:
Explanation/Reference: https://docs.oracle.com/database/121/SQLRF/statements_2017.htm#SQLRF00902
NEW QUESTION # 61
Which three statements are true about table data storage in an Oracle Database? (Choose three.)
- A. A table row piece can be chained across several database blocks
- B. Data block free space is always contiguous in the middle of the block
- C. Multiple row pieces from the same row may be stored in different database blocks
- D. Multiple row pieces from the same row may be stored in the same block
- E. Data block headers contain their own Data Block Address (DBA)
- F. Index block free space is always contiguous in the middle of the block
Answer: A,C,E
Explanation:
Reference:
https://antognini.ch/2016/10/whats-the-difference-between-row-migration-and-row-chaining/
NEW QUESTION # 62
Which three statements are true about advanced connection options supported by Oracle Net for connection to Oracle Database instances? (Choose three.)
- A. Source Routing requires the use of a name server
- B. Load Balancing requires the use of a name server
- C. Source Routing enables the use of Connection Manager (CMAN) which enables network traffic to be routed through a firewall
- D. Load Balancing can balance the number of connections to dispatchers when using a Shared Server configuration
- E. Connect Time Failover requires the connect string to have two or more listener addresses configured
- F. Connect Time Failover requires the use of Transparent Application Failover (TAF)
Answer: A,C,E
NEW QUESTION # 63
Which two statements are true about the configuration and use of UNDO_RETENTION with GURANTEED RETENTION? (Choose two.)
- A. UNDO_RETENTION specifies for how long Oracle attempts to keep unexpired UNDO.
- B. UNDO_RETENTION specifies for how long Oracle attempts to keep expired and unexpired UNDO.
- C. UNDO_RETENTION specifies how long all types of UNDO are retained.
- D. Unexpired UNDO is always retained.
- E. Active UNDO is always retained.
Answer: B,D
NEW QUESTION # 64
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 IS NOT NULL
AND cust_credit_limit IS NOT NULL; - B. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNT
FROM customers
WHERE cust_income_level != NULL
AND cust_credit_level !=NULL; - C. 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; - D. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNT
FROM customers
WHERE cust_income_level != NULL
AND due_amount != NULL; - E. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNT
FROM customers
WHERE cust_income_level <> NULL
AND due_amount <> NULL;
Answer: A
NEW QUESTION # 65
Which three are types of segments in an Oracle Database? (Choose three.)
- A. index
- B. clusters
- C. tables
- D. sequences
- E. undo
- F. stored procedures
Answer: A,B,C
Explanation:
http://www.adp-gmbh.ch/ora/concepts/segments.html
NEW QUESTION # 66
In your data center, Oracle Managed Files (OMF) is used for all databases.
All tablespaces are smallfile tablespaces.
SALES_Q1 is a permanent user-defined tablespace in the SALES database.
Examine this command which is about to be issued by a DBA logged in to the SALES database:
ALTER TABLESPACE sales_q1 ADD DATAFILE;
Which are two actions, either one of which you could take to ensure that the command executes successfully?
(Choose two.)
- A. Ensure that DB_CREATE_FILE_DEST specifies a location with at least 100 Mb of available space.
- B. Ensure that DB_RECOVERY_FILE_DEST and DB_CREATE_FILE_DEST each specify locations with at least 50 Mb of available space.
- C. Ensure that DB_RECOVERY_FILE_DEST and DB_CREATE_FILE_DEST each specify with at least 50 Mb of available space.
- D. Add the AUTOEXTEND ON clause with NEXT set to 100M.
- E. Specify a path in the DATAFILE clause of the command specifying a location with at least 100M of available space.
Answer: D,E
NEW QUESTION # 67
Which three functions are performed by dispatchers in a shared server configuration? (Choose three.)
- A. receiving inbound requests from processes using shared server connections
- B. sending shared server session responses back to requesters on the appropriate connection
- C. broadcasting shared server session responses back to requesters on all connections
- D. sending each connection input request to the appropriate shared server input queue
- E. writing inbound request to the common request queue from all shared server connections
- F. checking for outbound shared server responses on the common outbound response queue
Answer: A,D,E
NEW QUESTION # 68
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 PGA
- C. in the temporary tablespace
- D. in the SYSAUX tablespace
- E. in the SGA
Answer: A
NEW QUESTION # 69
Which two statements are true about UNDO and REDO? (Choose two.)
- A. The generation of UNDO generates REDO
- B. DML modifies Oracle database objects and only generates UNDO
- C. The generation of REDO generates UNDO
- D. DML modifies Oracle database objects and only generates REDO
Answer: A,C
NEW QUESTION # 70
You want to write a query that prompts for two column names and the WHERE condition each time it is executed in a session but only prompts for the table name the first time it is executed.
The variables used in your query are never undefined in your session.
Which query can be used?
- A. SELECT &col1, &col2FROM "&table"WHERE &condition;
- B. SELECT &&col1, &&col2FROM &tableWHERE &&condition = &&cond;
- C. SELECT '&&col1', '&&col2'FROM &tableWHERE '&&condition' = '&cond';
- D. SELECT &&col1, &&col2FROM &tableWHERE &&condition;
- E. SELECT &col1, &col2FROM &&tableWHERE &condition;
Answer: E
NEW QUESTION # 71
Examine the description of the members table:
Examine the partial query:
SELECT city, last__name 1NAME FROM members
You want to display all cities that contain the string an. The cities must be returned in ascending order, with the last names further sorted in descending order.
Which two clauses must you add to the query?
- A. ORDER BY 1, 2
- B. ORDER BY 1, LNAME DESC
- C. WHERE city LIKE *%AN%*
- D. ORDER BY last_narae DESC, city ASC
- E. WHERE city IN (*%AN%')
- F. WHERE city = =%AN%'
Answer: B,C
NEW QUESTION # 72
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 TEMP tablespace
- B. 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
- C. The sales user must have their quota on the users tablespace removed
- 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 all the rows to be inserted into any table in their schema
- F. The sales user must have been granted the CREATE TABLE privilege
Answer: B,C,F
NEW QUESTION # 73
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 least recently written undo block of UNDOTBS1 is overwritten by the generated undo.
- 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 generated undo is stored in SYSTEM.
- D. It succeeds and the least recently read undo block of UNDOTBS1 is overwritten by the generated undo.
- E. It succeeds and the generated undo is stored in SYSAUX.
Answer: B
Explanation:
To guarantee the success of long-running queries or Oracle Flashback operations, you can enable retention guarantee. If retention guarantee is enabled, the specified minimum undo retention is guaranteed; the database never overwrites unexpired undo data even if it means that transactions fail due to lack of space in the undo tablespace. If retention guarantee is not enabled, the database can overwrite unexpired undo when space is low, thus lowering the undo retention for the system. This option is disabled by default.
NEW QUESTION # 74
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Oracle 1Z1-082 exam is designed to test and certify the knowledge and skills of database administrators in the Oracle Database Administration I domain. It covers various topics such as installation and configuration of Oracle databases, creating and managing database instances, implementing backup and recovery strategies, and monitoring and optimizing database performance. 1Z0-082 exam is intended for professionals who are interested in pursuing a career in database administration or for those who already work in this field and want to expand their skillset and obtain professional certification.
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