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NEW QUESTION 32
Which two statements are true about UNDO and REDO? (Choose two.)
- A. The generation of REDO generates UNDO
- B. DML modifies Oracle database objects and only generates UNDO
- C. DML modifies Oracle database objects and only generates REDO
- D. The generation of UNDO generates REDO
- E. DML modifies Oracle database objects and generates UNDO and REDO
Answer: A,D
NEW QUESTION 33
A script abc.sql must be executed to perform a job.
A database user HR, who is defined in this database, executes this command:
$ sqlplus hr/hr@orcl @abc.sql
What will happen upon execution?
- A. The command fails and reports an error because @ is used twice
- B. The command succeeds and HR will be connected to the orcl database instance, and the abc.sql script will be executed
- C. The command succeeds and HR will be connected to the orcl and abc.sql databases
- D. The command fails because the script must refer to the full path name
Answer: B
NEW QUESTION 34
In one of your databases, the user HR has the password HRMGR. You want to connect to a database instance whose listener listens on port 1531 by using this statement:
CONNECT HR/HRMGR@orcl
No name server is used.
Which statement is true about ORCL?
- A. It must be the value of the SERVICE_NAMES parameter on the client side
- B. It must resolve to a valid connect descriptor in the client's tnsnames.ora file
- C. It must be the name of the database to whose instance HR wishes to connect
- D. It must resolve to a valid connect descriptor in the server's tnsnames.ora file
- E. It must be the name of the server running the database to whose instance HR wishes to connect
Answer: E
NEW QUESTION 35
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 week.
Which query can be used?
- A. SELECT emp_id, NEXT_DAY(MONTHS_BETWEEN(hire_date, SYSDATE), 6) FROM employees;
- B. SELECT emp_id, NEXT_DAY(ADD_MONTHS(hire_date, 6), 1) FROM employees;
- C. SELECT emp_id, NEXT_DAY(ADD_MONTHS(hire_date, 6), `MONDAY') FROM employees;
- D. SELECT emp_id, ADD_MONTHS(hire_date, 6), NEXT_DAY(`MONDAY') FROM employees;
Answer: C
NEW QUESTION 36
You have been tasked to create a table for a banking application.
One of the columns must meet three requirements:
1. Be stored in a format supporting date arithmetic without using
conversion functions
2. Store a loan period of up to 10 years
3. Be used for calculating interest for the number of days the loan
remains unpaid
Which data type should you use?
- A. TIMESTAMP WITH TIMEZONE
- B. TIMESTAMP
- C. INTERVAL YEAR TO MONTH
- D. INTERVAL DAY TO SECOND
- E. TIMESTAMP WITH LOCAL TIMEZONE
Answer: D
NEW QUESTION 37
Which three statements are true regarding indexes? (Choose three.)
- A. A UNIQUE index can be altered to be non-unique
- B. An update to a table can result in no updates to any of the table's indexes
- C. An update to a table can result in updates to any or all of the table's indexes
- D. A SELECT statement can access one or more indices without accessing any tables
- E. When a table is dropped and is moved to the RECYCLE BIN, all indexes built on that table are permanently dropped
- F. A table belonging to one user can have an index that belongs to a different user
Answer: A,C,E
NEW QUESTION 38
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 39
Which two statements are true about UNDO and REDO? (Choose two.)
- A. The generation of REDO generates UNDO
- B. DML modifies Oracle database objects and only generates UNDO
- C. DML modifies Oracle database objects and only generates REDO
- D. The generation of UNDO generates REDO
Answer: A,D
NEW QUESTION 40
Which three failures require intervention for recovery? (Choose three.)
- A. statement failure
- B. a user error such as dropping the wrong table
- C. media failure
- D. network interface card (NIC) failure
- E. user process failure
Answer: B,C,E
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. 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
Explanation:
https://docs.oracle.com/database/121/SQLRF/statements_2017.htm#SQLRF00902
NEW QUESTION 42
The CUSTOMERS table has a CUST_CREDIT_LIMIT column of data type NUMBER.
Which two queries execute successfully? (Choose two.)
- A. SELECT NVL2(cust_credit_limit * .15, 'Not Available') FROM customers;
- B. SELECT NVL(cust_credit_limit * .15, 'Not Available') FROM customers;
- C. SELECT NVL2(cust_credit_limit, TO_CHAR(cust_credit_limit * .15), 'Not Available') FROM customers;
- D. SELECT TO_CHAR(NVL(cust_credit_limit * .15, 'Not Available')) FROM customers;
- E. SELECT NVL(TO_CHAR(cust_credit_limit * .15), 'Not Available') FROM customers;
Answer: C,E
NEW QUESTION 43
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 continues to run in the background
- B. It is paused and can be resumed
- C. It terminates
- D. You can reattach to it and monitor it
- E. You can no longer monitor it
Answer: C,E
NEW QUESTION 44
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. There are two listeners named LISTENER and LISTENER_1 running simultaneously using port
1521 on the same host as the database instances - B. LISTENER_1 must also be defined in the LISTENER.ORA file to enable dynamic service registration
- C. Dynamic service registration cannot be used for this database instance
- D. The definition for LISTENER_1 requires a CONNECT_DATA section to enable dynamic service registration
- E. The LREG process registers services dynamically with the LISTENER_1 listener
Answer: B
Explanation:
https://docs.oracle.com/database/121/NETAG/listenercfg.htm#NETAG292
NEW QUESTION 45
In one of your databases, you create a user, HR, and then execute this command:
GRANT CREATE SESSION TO hr WITH ADMIN OPTION;
Which three actions can HR perform? (Choose three.)
- A. Revoke the CREATE SESSION privilege from other users
- B. Grant the CREATE SESSION privilege with ADMIN OPTION to other users
- C. Execute DML statements in the HR schema
- D. Revoke the CREATE SESSION privilege from user HR
- E. Log in to the database instance
- F. Execute DDL statements in the HR schema
Answer: A,B,F
NEW QUESTION 46
Examine this command:
Which two statements are true? (Choose two.)
- A. If Oracle Managed Files (OMF) is used, then the file is renamed but moved to DB_CREATE_FILE_DEST.
- B. The tablespace containing SALES1.DBF must be altered OFFLINE before executing the command.
- C. The tablespace containing SALES1.DBF must be altered READ ONLY before executing the command.
- D. DML may be performed on tables with one or more extents in this data file during the execution of this command.
- E. The file is renamed and stored in the same location
Answer: D,E
NEW QUESTION 47
Examine these commands:
Which two statements are true about the sqlldr execution? (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 48
A script abc.sql must be executed to perform a job.
A database user HR, who is defined in this database, executes this command:
$ sqlplus hr/hr@orcl @abc.sql
What will happen upon execution?
- A. The command fails and reports an error because @ is used twice
- B. The command succeeds and HR will be connected to the orcl database instance, and the abc.sql script will be executed
- C. The command succeeds and HR will be connected to the orcl and abc.sql databases
- D. The command fails because the script must refer to the full path name
Answer: B
Explanation:
Explanation
NEW QUESTION 49
Examine this command and some partial output:
Why does the DB01.abc.com service show unknown status?
- A. The LOCAL_LISTENER database parameter is not set to a service name that refers to LISTENER_1
- B. The service DB01.abc.com is dynamically registered
- C. The SID_LIST_LISTENER section is not contained in the LISTENER.ORA file
- D. The listener is not listening on the default port 1521
- E. The service DB01.abc.com is statically registered
Answer: E
NEW QUESTION 50
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