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NEW QUESTION 35
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 expired and unexpired UNDO.
- B. Unexpired UNDO is always retained.
- C. UNDO_RETENTION specifies for how long Oracle attempts to keep unexpired UNDO.
- D. UNDO_RETENTION specifies how long all types of UNDO are retained.
- E. Active UNDO is always retained.
Answer: A,B
NEW QUESTION 36
View the Exhibit and examine the structure of the PRODUCTS table.
Which two tasks require subqueries? (Choose two.)
- A. Display the number of products whose PROD_LIST_PRICE is more than the average PROD_LIST_PRICE
- B. Display the total number of products supplied by supplier 102 which have a product status of obsolete
- C. Display the minimum PROD_LIST_PRICE for each product status
- D. Display products whose PROD_MIN_PRICE is more than the average PROD_LIST_PRICE of all products, and whose status is orderable
- E. Display suppliers whose PROD_LIST_PRICE is less than 1000
Answer: A,D
NEW QUESTION 37
Examine these commands:
Which two statements are true about the sqlldr execution? (Choose two.)
- A. It generates a sql script that it uses to load data from EMP.DAT to EMP
- B. It appends data from EMP.DAT to EMP
- 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 log that contains control file entries, which can be used with normal SQL*Loader operations
Answer: A,D
NEW QUESTION 38
Which three statements are true about inner and outer joins? (Choose three.)
- A. A full outer join returns matched and unmatched rows
- B. A full outer join must use Oracle syntax
- C. A left or right outer join returns only unmatched rows
- D. Outer joins can be used when there are multiple join conditions on two tables
- E. Outer joins can only be used between two tables per query
- F. An inner join returns matched rows
Answer: A,C,F
Explanation:
Reference:
https://www.studytonight.com/dbms/joining-in-sql.php
NEW QUESTION 39
Examine this description of the TRANSACTIONS table:
Which two SQL statements execute successfully? (Choose two.)
- A. SELECT customer_id AS "CUSTOMER-ID", transaction_date AS DATE, amount + 100 "DUES" FROM transactions;
- B. SELECT customer_id AS 'CUSTOMER-ID', transaction_date AS DATE, amount + 100 'DUES AMOUNT' FROM transactions;
- C. SELECT customer_id CUSTID, transaction_date TRANS_DATE, amount + 100 DUES FROM transactions;
- D. SELECT customer_id AS CUSTOMER-ID, transaction_date AS TRANS_DATE, amount + 100 "DUES AMOUNT" FROM transactions;
- E. SELECT customer_id AS "CUSTOMER-ID", transaction_date AS "DATE", amount + 100 DUES FROM transactions;
Answer: C,E
NEW QUESTION 40
Which three statements are true about single-row functions? (Choose three.)
- A. They can be used only in the WHERE clause of a SELECT statement
- B. They return a single result row per table
- C. The data type returned can be different from the data type of the argument
- D. They can accept only one argument
- E. The argument can be a column name, variable, literal or an expression
- F. They can be nested to any level
Answer: B,C,E
Explanation:
Explanation/Reference: https://www.folkstalk.com/2012/01/oracle-single-row-functions-examples.html
NEW QUESTION 41
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 42
View the Exhibit and examine the structure of the PRODUCTS table.
Which two tasks require subqueries? (Choose two.)
- A. Display the number of products whose PROD_LIST_PRICE is more than the average PROD_LIST_PRICE
- B. Display the total number of products supplied by supplier 102 which have a product status of obsolete
- C. Display the minimum PROD_LIST_PRICE for each product status
- D. Display products whose PROD_MIN_PRICE is more than the average PROD_LIST_PRICE of all products, and whose status is orderable
- E. Display suppliers whose PROD_LIST_PRICE is less than 1000
Answer: A,D
NEW QUESTION 43
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. INTERSECT
- B. UNION ALL
- C. MINUS
- D. UNION
- E. SUBTRACT
Answer: C
NEW QUESTION 44
Which three statements are true about dropping and unused columns in an Oracle database? (Choose three.)
- A. A column that is set to UNUSED still counts towards the limit of 1000 columns per table
- B. A DROP COLUMN command can be rolled back
- C. An UNUSED column's space is reclaimed automatically when the row containing that column is next queried.
- D. Partition key columns cannot be dropped.
- E. A primary key column referenced by another column as a foreign key can be dropped if using the CASCADE option.
- F. An UNUSED column's space is reclaimed automatically when the block containing that column is next queried.
Answer: A,D,E
NEW QUESTION 45
Which two statements are true about the Automatic Diagnostic Repository (ADR)? (Choose two.)
- A. It supports diagnostics for Oracle Clusterware
- B. The ADR base defaults to $ORACLE_HOME/dbs if the DIAGNOSTIC_DEST parameter and the ORACLE_BASE environment variable are not set
- C. It supports diagnostics for Automatic Storage Management (ASM)
- D. It is held inside an Oracle database schema
- E. The ADR base defaults to $ORACLE_HOME/rdbms/admin ifneither DIAGNOSTIC_DEST nor ORACLE_BASE is set
Answer: A,C
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 46
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 ROUND(SYSDATE - '01-JAN-2019') FROM DUAL;
- B. SELECT TO_DATE(SYSDATE, 'DD/MONTH/YYYY') - '01/JANUARY/2019' FROM DUAL;
- C. SELECT SYSDATE - TO_DATE('01-JANUARY-2019') FROM DUAL;
- D. SELECT TO_CHAR(SYSDATE, 'DD-MON-YYYY') - '01-JAN-2019' FROM DUAL;
- E. SELECT ROUND(SYSDATE - TO_DATE('01/JANUARY/2019')) FROM DUAL;
Answer: A,D
NEW QUESTION 47
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. INTERSECT
- B. UNION ALL
- C. MINUS
- D. UNION
- E. SUBTRACT
Answer: C
NEW QUESTION 48
Which two statements are true about the results of using the INTERSECT operator in compound queries? (Choose two.)
- A. Reversing the order of the intersected tables can sometimes affect the output
- B. INTERSECT ignores NULLs
- C. Column names in each SELECT in the compound query can be different
- D. INTERSECT returns rows common to both sides of the compound query
- E. The number of columns in each SELECT in the compound query can be different
Answer: B,C
NEW QUESTION 49
Examine the description of the CUSTOMERS table:
You want to display details of all customers who reside in cities starting with the letter D followed by at least two characters.
Which query can be used?
- A. SELECT * FROM customers WHERE city LIKE `D_%';
- B. SELECT * FROM customers WHERE city = `D_%';
- C. SELECT * FROM customers WHERE city LIKE `D_';
- D. SELECT * FROM customers WHERE city = `%D_';
Answer: A
NEW QUESTION 50
Which two statements are true about Enterprise Manager Database Express? (Choose two.)
- A. The same port number can be used for multiple Database Express configurations for multiple databases on the same host
- B. It can be used to switch a database into ARCHIVELOGMODE
- C. It is available only when the database is open
- D. It can be used to perform database recovery
- E. The same port number can be used for Database Express configurations for databases on different hosts
Answer: A,B
Explanation:
Explanation/Reference: https://docs.oracle.com/en/database/oracle/oracle-database/19/admqs/getting-started-with- database-administration.html#GUID-EB851101-07BE-4038-BB9D-06E01CC7F5D5
NEW QUESTION 51
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 read undo block of UNDOTBS1 is overwritten by the generated undo.
- B. It succeeds and the generated undo is stored in SYSTEM.
- C. It succeeds and the generated undo is stored in SYSAUX.
- D. It fails and returns the error message "ORA-30036: unable to extend segment by 8 in undo tablespace
'UNDOTBS1'". - E. It succeeds and the least recently written undo block of UNDOTBS1 is overwritten by the generated undo.
Answer: E
NEW QUESTION 52
Examine the description of the BOOKS table:
The table has 100 rows.
Examine this sequence of statements issued in a new session:
INSERT INTO books VALUES ('ADV112', 'Adventures of Tom Sawyer', NULL, NULL); SAVEPOINT a; DELETE FROM books; ROLLBACK TO SAVEPOINT a; ROLLBACK; Which two statements are true? (Choose two.)
- A. The first ROLLBACK command restores the 101 rows that were deleted, leaving the inserted row still to be committed
- B. The second ROLLBACK command replays the delete
- C. The first ROLLBACK command restores the 101 rows that were deleted and commits the inserted row
- D. The second ROLLBACK command undoes the insert
- E. The second ROLLBACK command does nothing
Answer: A,D
NEW QUESTION 53
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 DALLAS_DB
- B. as SCOTT in BOSTON_DB and SYS in DALLAS_DB
- C. as SCOTT in BOSTON_DB
- D. as SYS in both the databases
- E. as SCOTT in both the databases
Answer: D
NEW QUESTION 54
In the spfile of a single instance database, LOCAL_LISTENER is set to LISTENER_1.
The TNSNAMES.ORA file in $ORACLE_HOME/network/admin in the database home contains:
Which statement is true?
- A. Dynamic service registration cannot be used for this database instance
- B. The LREG process registers services dynamically with the LISTENER_1 listener
- C. The definition for LISTENER_1 requires a CONNECT_DATA section to enable dynamic service registration
- D. LISTENER_1 must also be defined in the LISTENER.ORA file to enable dynamic service registration
- E. There are two listeners named LISTENER and LISTENER_1 running simultaneously using port
1521 on the same host as the database instances
Answer: D
Explanation:
https://docs.oracle.com/database/121/NETAG/listenercfg.htm#NETAG292
NEW QUESTION 55
Which two tasks can you perform using DBCA for databases? (Choose two.)
- A. Configure incremental backups for a new database
- B. Change the standard block size of an existing database
- C. Register a new database with an available Enterprise Manager Management server
- D. Enable flashback database for an existing database
- E. Configure a nonstandard block size for a new database
Answer: B,C
NEW QUESTION 56
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. It terminates
- D. You can reattach to it and monitor it
- E. You can no longer monitor it
Answer: C,E
Explanation:
Explanation/Reference: https://blog.oracle48.nl/killing-and-resuming-datapump-expdp-and-impdp-jobs/
NEW QUESTION 57
Which three statements are true about the Oracle Data Dictionary? (Choose three.)
- A. Usernames of all users including database administrators are stored in the data dictionary
- B. The data dictionary is created and maintained by the database administrator
- C. Views with the same name but different prefixes, such as CDB, DBA, ALL and USER, reference the same base tables from the data dictionary
- D. Base tables can be queried directly
- E. It is owned by the SYSTEM user
- F. Data dictionary views are created by joins of dictionary base tables and DBA-defined tables
Answer: A,C,D
NEW QUESTION 58
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