1Z0-052, Oracle 1Z0-052 Exam

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1.Identify two situations in which you can use Data Recovery Advisor for recovery. (Choose two.)
A. The database files are corrupted when the database is open.
B. The user has dropped an important table that needs to be recovered.
C. The archived redo log files are missing for which the backup is not available.
D. The database is not opening because the required database files are missing.
Answer: AD

3. In which of the scenarios will the DBA perform recovery? (Choose all that apply.)
A. The alert log file is corrupted.
B. A tablespace is accidentally dropped.
C. One of the redo log members is corrupted.
D. A database user terminates the session abnormally.
E. The hard disk on which the data file is stored is corrupted.
Answer: BE

4. You executed this command to create a temporary table:
SQL> CREATE GLOBAL TEMPORARY TABLE report_work_area (startdate DATE, enddate DATE, class CHAR(20)) ON COMMIT PRESERVE ROWS;
Which statement is true about the rows inserted into the REPORT_WORK_AREA table during a transaction?
A. The rows stay in the table only until session termination.
B. The rows stay in the table only until the next transaction starts on the table.
C. The rows are visible to all current sessions after the transaction is committed.
D. The rows stay available for subsequent sessions after the transaction is committed.
Answer: A

5. Your database is open and the LISTENER listener is running. The new DBA of the system stops the listener by using the command:
LSNRCTL> STOP
What happens to the sessions that are presently connected to the database instance?
A. The sessions are able to perform only queries.
B. The sessions are not affected and continue to function normally.
C. The sessions are terminated and the active transactions are rolled back.
D. The sessions are not allowed to perform any operations till the listener is started.
Answer: B

6. You have two tables with referential integrity enforced between them. You need to insert data to the child table first because it is going to be a long transaction and data for the parent table will be available in a later stage, which can be inserted as part of the same transaction.
View the Exhibit to examine the commands used to create tables.
Which action would you take to delay the referential integrity checking until the end of the transaction?
A. Set the constraint to deferred before starting the transaction.
B. Alter the constraint to NOVALIDATE state before starting the transaction.
C. Enable the resumable mode for the session before starting the transaction.
D. Set the COMMIT_WAIT parameter to FORCE_WAIT for the session before starting the transaction.
Answer: A

7. View the Exhibit to examine the output produced by the following query at three different times since the database instance started and has experienced workloads of different capacities:
SQL> SELECT substr(component, 0, 10) COMP, current_size CS,
user_specified_size US
FROM v$memory_dynamic_components
WHERE current_size!=0;
What do you infer from this?
A. The database instance is running with manual PGA management.
B. The database instance is running with manual shared memory management.
C. The database instance has the MEMORY_TARGET value set to a nonzero value.
D. All sessions are connected to the database instance in dedicated mode, and no RMAN or parallel query operations have been performed.
Answer: C

8. Note the following structures in your database server:
1. Extents
2. OS Blocks
3. Tablespace
4. Segments
5. Oracle Data Block
Which option has the correct arrangement of these structures from the smallest to the largest?
A. 2, 5, 1, 4, 3
B. 1, 2, 3, 4, 5
C. 5, 2, 1, 3, 4
D. 2, 1, 5, 4, 3
Answer: A

2. You perform differential incremental level 1 backups of your database on each working day and level 0 backup on Sundays, to tape. Which two statements are true about differential incremental backups? (Choose two.)
A. The backup performed on Sundays contains all the blocks that have ever been used in the database.
B. The backup performed on Sundays contains all the blocks that have changed since the last level 1 backup.
C. The backup performed on each working day contains all the blocks that have changed since the last level 0 backup.
D. The backup performed on Monday contains all the blocks that have changed since the level 0 backup, and every other working day contains all the blocks that have changed since the level 1 backup.
Answer: AD

2. Identify two situations in which you can use Data Recovery Advisor for recovery. (Choose two.)
A. The database files are corrupted when the database is open.
B. The user has dropped an important table that needs to be recovered.
C. The archived redo log files are missing for which the backup is not available.
D. The database is not opening because the required database files are missing.
Answer: AD

3. In which of the scenarios will the DBA perform recovery? (Choose all that apply.)
A. The alert log file is corrupted.
B. A tablespace is accidentally dropped.
C. One of the redo log members is corrupted.
D. A database user terminates the session abnormally.
E. The hard disk on which the data file is stored is corrupted.
Answer: BE

4. You executed this command to create a temporary table:
SQL> CREATE GLOBAL TEMPORARY TABLE report_work_area (startdate DATE, enddate DATE, class CHAR(20)) ON COMMIT PRESERVE ROWS;
Which statement is true about the rows inserted into the REPORT_WORK_AREA table during a transaction?
A. The rows stay in the table only until session termination.
B. The rows stay in the table only until the next transaction starts on the table.
C. The rows are visible to all current sessions after the transaction is committed.
D. The rows stay available for subsequent sessions after the transaction is committed.
Answer: A

5. Your database is open and the LISTENER listener is running. The new DBA of the system stops the listener by using the command:
LSNRCTL> STOP
What happens to the sessions that are presently connected to the database instance?
A. The sessions are able to perform only queries.
B. The sessions are not affected and continue to function normally.
C. The sessions are terminated and the active transactions are rolled back.
D. The sessions are not allowed to perform any operations till the listener is started.
Answer: B

6. You have two tables with referential integrity enforced between them. You need to insert data to the child table first because it is going to be a long transaction and data for the parent table will be available in a later stage, which can be inserted as part of the same transaction.
View the Exhibit to examine the commands used to create tables.
Which action would you take to delay the referential integrity checking until the end of the transaction?
A. Set the constraint to deferred before starting the transaction.
B. Alter the constraint to NOVALIDATE state before starting the transaction.
C. Enable the resumable mode for the session before starting the transaction.
D. Set the COMMIT_WAIT parameter to FORCE_WAIT for the session before starting the transaction.
Answer: A

7. View the Exhibit to examine the output produced by the following query at three different times since the database instance started and has experienced workloads of different capacities:
SQL> SELECT substr(component, 0, 10) COMP, current_size CS,
user_specified_size US
FROM v$memory_dynamic_components
WHERE current_size!=0;
What do you infer from this?
A. The database instance is running with manual PGA management.
B. The database instance is running with manual shared memory management.
C. The database instance has the MEMORY_TARGET value set to a nonzero value.
D. All sessions are connected to the database instance in dedicated mode, and no RMAN or parallel query operations have been performed.
Answer: C

8. Note the following structures in your database server:
1. Extents