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Oracle 1Z0-045 Exam Syllabus Topics:

Oracle database 10g:new features for Oracle8i ocps Sample Questions:

Question 1

What is true if you want to switch undo tablespaces from the current one, called UNDO1, to a new one called UNDO2?

A. It is possible to switch to UNDO2, but current active transactions will abort.
B. It is possible to switch to UNDO2; current active transactions will be automatically migrated to UNDO2.
C. It is possible to switch to UNDO2; only current active transactions will continue to execute inside UNDO1.
D. It is NOT possible to switch unless no active transaction exists in UNDO1.

Question 2

Which method would you use to undo the changes made by a particular transaction without affecting the changes made by other transactions?

A. execute the ROLLBACK command with transaction number
B. flashback the database to before the transaction was committed
C. point-in-time recovery
D. manually enter the appropriate data again
E. determine all the necessary undo SQL statements from FLASHBACK_TRANSACTION_QUERY and use them for recovery

Question 3

Consider the following command to add a new disk group called "tdgroupA" with two failover groups:
CREATE DISKGROUP tdgroupA NORMAL REDUNDANCY FAILOVERGROUP control01 DISK
'/devices/A1',
'/devices/A2',
'/devices/A3'
FAILOVERGROUP control02 DISK
'/devices/B1',
'/devices/B2',
'/devices/B3';
The disk "/devices/A1" is currently a member disk of a disk group by name "tdgroup1".
Which task would be accomplished by the command?

A. A new disk group calledtdgroupA will be added with two failover groups and the /devices/A1 disk will get reattached to the new disk group without being detached from the existing one.
B. A new disk group calledtdgroupA will be added with two failover groups and the /devices/A1 disk gets detached from the existing disk group tdgroup1 and attached to the new disk group tdgroupA disk group.
C. This command would result in an error because a disk group can have only one failover group.
D. This command would result in an error because the /devices/A1 disk is a member of another disk group tdgroup1.
E. A new disk group calledtdgroupA will be added with two failover groups and the /devices/A1 disk will be ignored for the new disk group because it is a member of an existing disk group tdgroup1.

Question 4

Which three actions are required to configure the Flashback Database? (Choose three.)

A. enable Flashback logging
B. create a user calledflashoper
C. start the database in the ARCHIVELOG mode
D. set Flash Recovery Area
E. start the database in the NOARCHIVELOG mode
F. create FLASHBACKtablespace

Question 5

Examine the following command to create an external table from EMPLOYEES and DEPARTMENTS database tables.
1.CREATE TABLE employee_ext
2.(employee_id, first_name, last_name, department_name)
3.ORGANIZATION EXTERNAL
4.(
5.TYPE ORACLE_LOADER
6.DEFAULT DIRECTORY ext_dir
7.LOCATION ('emp1.dmp')
8.)
9.PARALLEL
10.
AS
11.
SELECT e.emplyee_id,e.first_name,e.last_name,d.department_name
12.
FROM employees e, departments d;
Which line of the command would cause an error?

A. line 3, because ORGANIZATION EXTERNAL has been specified
B. line 9, because the PARALLEL option cannot be specified with one file name
C. line 2, because the column names have been specified
D. line 5, because ORACLE_LOADER is not a valid structure for external table creation with the SELECT statement
E. line 12, because there is no join defined between EMPLOYEES and DEPARTMENTS tables
F. line 7, because the file name must have a .dat extension

Solutions: