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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.
Oracle Database Administration I Sample Questions (Q115-Q120):
NEW QUESTION # 115
Which two are true about a SQL statement using SET operators such as UNION? (Choose two.)
- A. The data type of each column returned by the second query must exactly match the data type of the corresponding column returned by the first query.
- B. The number, but not names, of columns must be identical for all SELECT statements in the query.
- C. The data type of each column returned by the second query must be implicitly convertible to the data type of the corresponding column returned by the first query.
- D. The names and number of columns must be identical for all SELECT statements in the query.
- E. The data type group of each column returned by the second query must match the data type of the corresponding column returned by the first query.
Answer: A,E
NEW QUESTION # 116
Which three files are used by conventional path SQL*Loader when the TABLE option is not specified? (Choose three.)
- A. password files
- B. input files
- C. control files
- D. bad files
- E. dump files
Answer: B,C,D
NEW QUESTION # 117
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. Change is applied to the current instance, but does not persist after instance restart
- B. It fails because the SCOPE clause is missing
- C. The value is changed only in the PFILE and takes effect at the next instance startup
- D. The value is changed for the current instance and in the PFILE
Answer: A
Explanation:
Explanation/Reference: https://docs.oracle.com/database/121/SQLRF/statements_2017.htm#SQLRF00902
NEW QUESTION # 118
Which three statements are true about table data storage in an Oracle Database? (Choose three.)
- A. Data block free space is always contiguous in the middle of the block
- B. Data block headers contain their own Data Block Address (DBA)
- C. A table row piece can be chained across several database blocks
- D. Multiple row pieces from the same row may be stored in the same block
- E. Index block free space is always contiguous in the middle of the block
- F. Multiple row pieces from the same row may be stored in different database blocks
Answer: B,C,F
Explanation:
Reference:
https://antognini.ch/2016/10/whats-the-difference-between-row-migration-and-row-chaining/
NEW QUESTION # 119
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 SYSDATE - TO_DATE('01-JANUARY-2019') FROM DUAL;
- B. SELECT ROUND(SYSDATE - '01-JAN-2019') FROM DUAL;
- C. SELECT TO_CHAR(SYSDATE,'DD-MON-YYYY') - '01-JAN-2019' FROM DUAL;
- D. SELECT ROUND(SYSDATE - TO_DATE('01/JANUARY/2019')) FROM DUAL;
- E. SELECT TO_DATE(SYSDATE, 'DD/MONTH/YYYY') - '01/JANUARY/2019' FROM DUAL;
Answer: A,D
NEW QUESTION # 120
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