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السؤال #1
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;
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اجابة صحيحة: BDE
السؤال #2
Which two statements are true about the SET VERIFY ON command? (Choose two.)
A. It can be used only in SQL*Plus
B. It displays values for variables used only in the WHERE clause of a query
C. It can be used in SQL Developer and SQL*Plus
D. It displays values for variables created by the DEFINE command
E. It displays values for variables prefixed with &&
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اجابة صحيحة: ACD
السؤال #3
Which three statements are true about undo segments and the use of undo by transactions in an Oracle database instance? (Choose three.)
A. An undo segment may be used by multiple transactions simultaneously
B. Undo segments can wrap around to the first extent when a transaction fills the last extend of the undo segment
C. Undo segments have a minimum of three extents
D. Undo segments can extend when a transaction fills the last extent of the undo segment
E. A single transaction may use multiple undo segments simultaneously
F. Undo segments must be stored in a BIGFILE tablespace G
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اجابة صحيحة: BCD
السؤال #4
Which two statements are true about Enterprise Manager Database Express? (Choose two.)
A. It is available only when the database is open
B. It can be used to perform database recovery
C. The same port number can be used for Database Express configurations for databases on different hosts
D. It can be used to switch a database into ARCHIVELOGMODE
E. The same port number can be used for multiple Database Express configurations for multiple databases on the same host
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اجابة صحيحة: E
السؤال #5
The EMPLOYEES table contains columns EMP_ID of data type NUMBER and HIRE_DATE of data type DATE. You want to display the date of the first Monday after the completion of six months since hiring. The NLS_TERRITORY parameter is set to AMERICA in the session and, therefore, Sunday is the first day on the wee. Which query can be used?
A. SELECT emp_id, ADD_MONTHS(hire_date, 6), NEXT_DAY(‘MONDAY’) FROM employees;
B. SELECT emp_id, NEXT_DAY(ADD_MONTHS(hire_date, 6), ‘MONDAY’) FROM employees;
C. SELECT emp_id, NEXT_DAY(MONTHS_BETWEEN(hire_date, SYSDATE), 6) FROM employees;
D. SELECT emp_id, NEXT_DAY(ADD_MONTHS(hire_date, 6), 1) FROM employees;
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اجابة صحيحة: ADG

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