Oracle 1Z0-042

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Oracle 1Z0-042 Exam Syllabus Topics:

Oracle database 10g:Administration I Sample Questions:

Question #1
You are creating a locally managed tablespace to meet the following requirements:
All the extents should be of the same size.
The data should be spread across two data files.
A bitmap should be used to record the free space within the allocated extents.
Which three options would you choose? (Choose three.)

A. specify extent allocation as Uniform
B. set PCTFREE and PCTUSED to 50
C. specify extent allocation as Automatic
D. create the tablespace as smallfile tablespace
E. use the RESIZE clause while creating the tablespace
F. set segment space management to Automatic
G. create the tablespace as bigfile tablespace

Question #2
Redo log files are not multiplexed in your database. Redo log blocks are corrupted in group 2, and archiving has stopped. All the redo logs are filled and database activity is halted. Database writer has written everything to disk. Which command would you execute to proceed further?

A. ALTER DATABASE DROP LOGFILE GROUP 2;
B. ALTER DATABASE CLEAR LOGFILE GROUP 2;
C. RECOVER LOGFILE BLOCK GROUP 2;
D. ALTER DATABASE CLEAR UNARCHIVED LOGFILE GROUP 2;
E. ALTER DATABASE RECOVER LOGFILE GROUP 2;

Question #3
View the Exhibit.
What would happen if you change the value of Desired Mean Time To Recover to 30?

A. Automatic checkpoint tuning would be disabled.
B. The redo log from log buffers would be written to redo log files at a slower rate.
C. The MTTR Advisor would be enabled.
D. The Redo Log Advisor would be disabled.

Question #4
User SCOTT executes the following command on the EMP table but has not issued COMMIT, ROLLBACK, or any data definition language (DDL) command:
SQL> SELECT job FROM emp
2 WHERE job='CLERK' FOR UPDATE OF empno;
SCOTT has opened another session to work with the database. Which three operations would wait when issued in SCOTT's second session? (Choose three.)

A. LOCK TABLE emp IN EXCLUSIVE MODE;
B. LOCK TABLE emp IN SHARE MODE;
C. SELECT job FROM emp WHERE job='CLERK' FOR UPDATE OF empno;
D. INSERT INTO emp(empno,ename) VALUES (1289,'Dick');
E. DELETE FROM emp WHERE job='MANAGER';

Question #5
Which two statements are true about the primary key constraint in a table? (Choose two.)

A. The non-deferrable primary key constraint creates an unique index on the primary key column if it is not already indexed.
B. It is possible to have more than one primary key constraint in a single table.
C. It is not possible to disable the primary key constraint.
D. The primary key constraint can be imposed by combining more than one column.
E. The primary key constraint can be referred by only one foreign key constraint.

Solutions: